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1 | /* Compiler driver program that can handle many languages. | |
2 | Copyright (C) 1987-2014 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | /* This program is the user interface to the C compiler and possibly to | |
21 | other compilers. It is used because compilation is a complicated procedure | |
22 | which involves running several programs and passing temporary files between | |
23 | them, forwarding the users switches to those programs selectively, | |
24 | and deleting the temporary files at the end. | |
25 | ||
26 | CC recognizes how to compile each input file by suffixes in the file names. | |
27 | Once it knows which kind of compilation to perform, the procedure for | |
28 | compilation is specified by a string called a "spec". */ | |
29 | ||
30 | #include "config.h" | |
31 | #include "system.h" | |
32 | #include "coretypes.h" | |
33 | #include "multilib.h" /* before tm.h */ | |
34 | #include "tm.h" | |
35 | #include "xregex.h" | |
36 | #include "obstack.h" | |
37 | #include "intl.h" | |
38 | #include "prefix.h" | |
39 | #include "gcc.h" | |
40 | #include "diagnostic.h" | |
41 | #include "flags.h" | |
42 | #include "opts.h" | |
43 | #include "params.h" | |
44 | #include "vec.h" | |
45 | #include "filenames.h" | |
46 | ||
47 | /* By default there is no special suffix for target executables. */ | |
48 | /* FIXME: when autoconf is fixed, remove the host check - dj */ | |
49 | #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX) | |
50 | #define HAVE_TARGET_EXECUTABLE_SUFFIX | |
51 | #endif | |
52 | ||
53 | /* By default there is no special suffix for host executables. */ | |
54 | #ifdef HOST_EXECUTABLE_SUFFIX | |
55 | #define HAVE_HOST_EXECUTABLE_SUFFIX | |
56 | #else | |
57 | #define HOST_EXECUTABLE_SUFFIX "" | |
58 | #endif | |
59 | ||
60 | /* By default, the suffix for target object files is ".o". */ | |
61 | #ifdef TARGET_OBJECT_SUFFIX | |
62 | #define HAVE_TARGET_OBJECT_SUFFIX | |
63 | #else | |
64 | #define TARGET_OBJECT_SUFFIX ".o" | |
65 | #endif | |
66 | ||
67 | static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; | |
68 | ||
69 | /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ | |
70 | #ifndef LIBRARY_PATH_ENV | |
71 | #define LIBRARY_PATH_ENV "LIBRARY_PATH" | |
72 | #endif | |
73 | ||
74 | /* If a stage of compilation returns an exit status >= 1, | |
75 | compilation of that file ceases. */ | |
76 | ||
77 | #define MIN_FATAL_STATUS 1 | |
78 | ||
79 | /* Flag set by cppspec.c to 1. */ | |
80 | int is_cpp_driver; | |
81 | ||
82 | /* Flag set to nonzero if an @file argument has been supplied to gcc. */ | |
83 | static bool at_file_supplied; | |
84 | ||
85 | /* Definition of string containing the arguments given to configure. */ | |
86 | #include "configargs.h" | |
87 | ||
88 | /* Flag saying to print the command line options understood by gcc and its | |
89 | sub-processes. */ | |
90 | ||
91 | static int print_help_list; | |
92 | ||
93 | /* Flag saying to print the version of gcc and its sub-processes. */ | |
94 | ||
95 | static int print_version; | |
96 | ||
97 | /* Flag indicating whether we should ONLY print the command and | |
98 | arguments (like verbose_flag) without executing the command. | |
99 | Displayed arguments are quoted so that the generated command | |
100 | line is suitable for execution. This is intended for use in | |
101 | shell scripts to capture the driver-generated command line. */ | |
102 | static int verbose_only_flag; | |
103 | ||
104 | /* Flag indicating how to print command line options of sub-processes. */ | |
105 | ||
106 | static int print_subprocess_help; | |
107 | ||
108 | /* Linker suffix passed to -fuse-ld=... */ | |
109 | static const char *use_ld; | |
110 | ||
111 | /* Whether we should report subprocess execution times to a file. */ | |
112 | ||
113 | FILE *report_times_to_file = NULL; | |
114 | ||
115 | /* Nonzero means place this string before uses of /, so that include | |
116 | and library files can be found in an alternate location. */ | |
117 | ||
118 | #ifdef TARGET_SYSTEM_ROOT | |
119 | static const char *target_system_root = TARGET_SYSTEM_ROOT; | |
120 | #else | |
121 | static const char *target_system_root = 0; | |
122 | #endif | |
123 | ||
124 | /* Nonzero means pass the updated target_system_root to the compiler. */ | |
125 | ||
126 | static int target_system_root_changed; | |
127 | ||
128 | /* Nonzero means append this string to target_system_root. */ | |
129 | ||
130 | static const char *target_sysroot_suffix = 0; | |
131 | ||
132 | /* Nonzero means append this string to target_system_root for headers. */ | |
133 | ||
134 | static const char *target_sysroot_hdrs_suffix = 0; | |
135 | ||
136 | /* Nonzero means write "temp" files in source directory | |
137 | and use the source file's name in them, and don't delete them. */ | |
138 | ||
139 | static enum save_temps { | |
140 | SAVE_TEMPS_NONE, /* no -save-temps */ | |
141 | SAVE_TEMPS_CWD, /* -save-temps in current directory */ | |
142 | SAVE_TEMPS_OBJ /* -save-temps in object directory */ | |
143 | } save_temps_flag; | |
144 | ||
145 | /* Output file to use to get the object directory for -save-temps=obj */ | |
146 | static char *save_temps_prefix = 0; | |
147 | static size_t save_temps_length = 0; | |
148 | ||
149 | /* The compiler version. */ | |
150 | ||
151 | static const char *compiler_version; | |
152 | ||
153 | /* The target version. */ | |
154 | ||
155 | static const char *const spec_version = DEFAULT_TARGET_VERSION; | |
156 | ||
157 | /* The target machine. */ | |
158 | ||
159 | static const char *spec_machine = DEFAULT_TARGET_MACHINE; | |
160 | ||
161 | /* Nonzero if cross-compiling. | |
162 | When -b is used, the value comes from the `specs' file. */ | |
163 | ||
164 | #ifdef CROSS_DIRECTORY_STRUCTURE | |
165 | static const char *cross_compile = "1"; | |
166 | #else | |
167 | static const char *cross_compile = "0"; | |
168 | #endif | |
169 | ||
170 | /* Greatest exit code of sub-processes that has been encountered up to | |
171 | now. */ | |
172 | static int greatest_status = 1; | |
173 | ||
174 | /* This is the obstack which we use to allocate many strings. */ | |
175 | ||
176 | static struct obstack obstack; | |
177 | ||
178 | /* This is the obstack to build an environment variable to pass to | |
179 | collect2 that describes all of the relevant switches of what to | |
180 | pass the compiler in building the list of pointers to constructors | |
181 | and destructors. */ | |
182 | ||
183 | static struct obstack collect_obstack; | |
184 | ||
185 | /* Forward declaration for prototypes. */ | |
186 | struct path_prefix; | |
187 | struct prefix_list; | |
188 | ||
189 | static void init_spec (void); | |
190 | static void store_arg (const char *, int, int); | |
191 | static void insert_wrapper (const char *); | |
192 | static char *load_specs (const char *); | |
193 | static void read_specs (const char *, bool, bool); | |
194 | static void set_spec (const char *, const char *, bool); | |
195 | static struct compiler *lookup_compiler (const char *, size_t, const char *); | |
196 | static char *build_search_list (const struct path_prefix *, const char *, | |
197 | bool, bool); | |
198 | static void xputenv (const char *); | |
199 | static void putenv_from_prefixes (const struct path_prefix *, const char *, | |
200 | bool); | |
201 | static int access_check (const char *, int); | |
202 | static char *find_a_file (const struct path_prefix *, const char *, int, bool); | |
203 | static void add_prefix (struct path_prefix *, const char *, const char *, | |
204 | int, int, int); | |
205 | static void add_sysrooted_prefix (struct path_prefix *, const char *, | |
206 | const char *, int, int, int); | |
207 | static char *skip_whitespace (char *); | |
208 | static void delete_if_ordinary (const char *); | |
209 | static void delete_temp_files (void); | |
210 | static void delete_failure_queue (void); | |
211 | static void clear_failure_queue (void); | |
212 | static int check_live_switch (int, int); | |
213 | static const char *handle_braces (const char *); | |
214 | static inline bool input_suffix_matches (const char *, const char *); | |
215 | static inline bool switch_matches (const char *, const char *, int); | |
216 | static inline void mark_matching_switches (const char *, const char *, int); | |
217 | static inline void process_marked_switches (void); | |
218 | static const char *process_brace_body (const char *, const char *, const char *, int, int); | |
219 | static const struct spec_function *lookup_spec_function (const char *); | |
220 | static const char *eval_spec_function (const char *, const char *); | |
221 | static const char *handle_spec_function (const char *, bool *); | |
222 | static char *save_string (const char *, int); | |
223 | static void set_collect_gcc_options (void); | |
224 | static int do_spec_1 (const char *, int, const char *); | |
225 | static int do_spec_2 (const char *); | |
226 | static void do_option_spec (const char *, const char *); | |
227 | static void do_self_spec (const char *); | |
228 | static const char *find_file (const char *); | |
229 | static int is_directory (const char *, bool); | |
230 | static const char *validate_switches (const char *, bool); | |
231 | static void validate_all_switches (void); | |
232 | static inline void validate_switches_from_spec (const char *, bool); | |
233 | static void give_switch (int, int); | |
234 | static int used_arg (const char *, int); | |
235 | static int default_arg (const char *, int); | |
236 | static void set_multilib_dir (void); | |
237 | static void print_multilib_info (void); | |
238 | static void perror_with_name (const char *); | |
239 | static void display_help (void); | |
240 | static void add_preprocessor_option (const char *, int); | |
241 | static void add_assembler_option (const char *, int); | |
242 | static void add_linker_option (const char *, int); | |
243 | static void process_command (unsigned int, struct cl_decoded_option *); | |
244 | static int execute (void); | |
245 | static void alloc_args (void); | |
246 | static void clear_args (void); | |
247 | static void fatal_signal (int); | |
248 | #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) | |
249 | static void init_gcc_specs (struct obstack *, const char *, const char *, | |
250 | const char *); | |
251 | #endif | |
252 | #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) | |
253 | static const char *convert_filename (const char *, int, int); | |
254 | #endif | |
255 | ||
256 | static void try_generate_repro (const char **argv); | |
257 | static const char *getenv_spec_function (int, const char **); | |
258 | static const char *if_exists_spec_function (int, const char **); | |
259 | static const char *if_exists_else_spec_function (int, const char **); | |
260 | static const char *sanitize_spec_function (int, const char **); | |
261 | static const char *replace_outfile_spec_function (int, const char **); | |
262 | static const char *remove_outfile_spec_function (int, const char **); | |
263 | static const char *version_compare_spec_function (int, const char **); | |
264 | static const char *include_spec_function (int, const char **); | |
265 | static const char *find_file_spec_function (int, const char **); | |
266 | static const char *find_plugindir_spec_function (int, const char **); | |
267 | static const char *print_asm_header_spec_function (int, const char **); | |
268 | static const char *compare_debug_dump_opt_spec_function (int, const char **); | |
269 | static const char *compare_debug_self_opt_spec_function (int, const char **); | |
270 | static const char *compare_debug_auxbase_opt_spec_function (int, const char **); | |
271 | static const char *pass_through_libs_spec_func (int, const char **); | |
272 | static const char *replace_extension_spec_func (int, const char **); | |
273 | static char *convert_white_space (char *); | |
274 | \f | |
275 | /* The Specs Language | |
276 | ||
277 | Specs are strings containing lines, each of which (if not blank) | |
278 | is made up of a program name, and arguments separated by spaces. | |
279 | The program name must be exact and start from root, since no path | |
280 | is searched and it is unreliable to depend on the current working directory. | |
281 | Redirection of input or output is not supported; the subprograms must | |
282 | accept filenames saying what files to read and write. | |
283 | ||
284 | In addition, the specs can contain %-sequences to substitute variable text | |
285 | or for conditional text. Here is a table of all defined %-sequences. | |
286 | Note that spaces are not generated automatically around the results of | |
287 | expanding these sequences; therefore, you can concatenate them together | |
288 | or with constant text in a single argument. | |
289 | ||
290 | %% substitute one % into the program name or argument. | |
291 | %i substitute the name of the input file being processed. | |
292 | %b substitute the basename of the input file being processed. | |
293 | This is the substring up to (and not including) the last period | |
294 | and not including the directory unless -save-temps was specified | |
295 | to put temporaries in a different location. | |
296 | %B same as %b, but include the file suffix (text after the last period). | |
297 | %gSUFFIX | |
298 | substitute a file name that has suffix SUFFIX and is chosen | |
299 | once per compilation, and mark the argument a la %d. To reduce | |
300 | exposure to denial-of-service attacks, the file name is now | |
301 | chosen in a way that is hard to predict even when previously | |
302 | chosen file names are known. For example, `%g.s ... %g.o ... %g.s' | |
303 | might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches | |
304 | the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it | |
305 | had been pre-processed. Previously, %g was simply substituted | |
306 | with a file name chosen once per compilation, without regard | |
307 | to any appended suffix (which was therefore treated just like | |
308 | ordinary text), making such attacks more likely to succeed. | |
309 | %|SUFFIX | |
310 | like %g, but if -pipe is in effect, expands simply to "-". | |
311 | %mSUFFIX | |
312 | like %g, but if -pipe is in effect, expands to nothing. (We have both | |
313 | %| and %m to accommodate differences between system assemblers; see | |
314 | the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.) | |
315 | %uSUFFIX | |
316 | like %g, but generates a new temporary file name even if %uSUFFIX | |
317 | was already seen. | |
318 | %USUFFIX | |
319 | substitutes the last file name generated with %uSUFFIX, generating a | |
320 | new one if there is no such last file name. In the absence of any | |
321 | %uSUFFIX, this is just like %gSUFFIX, except they don't share | |
322 | the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' | |
323 | would involve the generation of two distinct file names, one | |
324 | for each `%g.s' and another for each `%U.s'. Previously, %U was | |
325 | simply substituted with a file name chosen for the previous %u, | |
326 | without regard to any appended suffix. | |
327 | %jSUFFIX | |
328 | substitutes the name of the HOST_BIT_BUCKET, if any, and if it is | |
329 | writable, and if save-temps is off; otherwise, substitute the name | |
330 | of a temporary file, just like %u. This temporary file is not | |
331 | meant for communication between processes, but rather as a junk | |
332 | disposal mechanism. | |
333 | %.SUFFIX | |
334 | substitutes .SUFFIX for the suffixes of a matched switch's args when | |
335 | it is subsequently output with %*. SUFFIX is terminated by the next | |
336 | space or %. | |
337 | %d marks the argument containing or following the %d as a | |
338 | temporary file name, so that that file will be deleted if GCC exits | |
339 | successfully. Unlike %g, this contributes no text to the argument. | |
340 | %w marks the argument containing or following the %w as the | |
341 | "output file" of this compilation. This puts the argument | |
342 | into the sequence of arguments that %o will substitute later. | |
343 | %V indicates that this compilation produces no "output file". | |
344 | %W{...} | |
345 | like %{...} but mark last argument supplied within | |
346 | as a file to be deleted on failure. | |
347 | %o substitutes the names of all the output files, with spaces | |
348 | automatically placed around them. You should write spaces | |
349 | around the %o as well or the results are undefined. | |
350 | %o is for use in the specs for running the linker. | |
351 | Input files whose names have no recognized suffix are not compiled | |
352 | at all, but they are included among the output files, so they will | |
353 | be linked. | |
354 | %O substitutes the suffix for object files. Note that this is | |
355 | handled specially when it immediately follows %g, %u, or %U | |
356 | (with or without a suffix argument) because of the need for | |
357 | those to form complete file names. The handling is such that | |
358 | %O is treated exactly as if it had already been substituted, | |
359 | except that %g, %u, and %U do not currently support additional | |
360 | SUFFIX characters following %O as they would following, for | |
361 | example, `.o'. | |
362 | %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot | |
363 | (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH | |
364 | and -B options) and -imultilib as necessary. | |
365 | %s current argument is the name of a library or startup file of some sort. | |
366 | Search for that file in a standard list of directories | |
367 | and substitute the full name found. | |
368 | %eSTR Print STR as an error message. STR is terminated by a newline. | |
369 | Use this when inconsistent options are detected. | |
370 | %nSTR Print STR as a notice. STR is terminated by a newline. | |
371 | %x{OPTION} Accumulate an option for %X. | |
372 | %X Output the accumulated linker options specified by compilations. | |
373 | %Y Output the accumulated assembler options specified by compilations. | |
374 | %Z Output the accumulated preprocessor options specified by compilations. | |
375 | %a process ASM_SPEC as a spec. | |
376 | This allows config.h to specify part of the spec for running as. | |
377 | %A process ASM_FINAL_SPEC as a spec. A capital A is actually | |
378 | used here. This can be used to run a post-processor after the | |
379 | assembler has done its job. | |
380 | %D Dump out a -L option for each directory in startfile_prefixes. | |
381 | If multilib_dir is set, extra entries are generated with it affixed. | |
382 | %l process LINK_SPEC as a spec. | |
383 | %L process LIB_SPEC as a spec. | |
384 | %M Output multilib_os_dir. | |
385 | %G process LIBGCC_SPEC as a spec. | |
386 | %R Output the concatenation of target_system_root and | |
387 | target_sysroot_suffix. | |
388 | %S process STARTFILE_SPEC as a spec. A capital S is actually used here. | |
389 | %E process ENDFILE_SPEC as a spec. A capital E is actually used here. | |
390 | %C process CPP_SPEC as a spec. | |
391 | %1 process CC1_SPEC as a spec. | |
392 | %2 process CC1PLUS_SPEC as a spec. | |
393 | %* substitute the variable part of a matched option. (See below.) | |
394 | Note that each comma in the substituted string is replaced by | |
395 | a single space. A space is appended after the last substition | |
396 | unless there is more text in current sequence. | |
397 | %<S remove all occurrences of -S from the command line. | |
398 | Note - this command is position dependent. % commands in the | |
399 | spec string before this one will see -S, % commands in the | |
400 | spec string after this one will not. | |
401 | %>S Similar to "%<S", but keep it in the GCC command line. | |
402 | %<S* remove all occurrences of all switches beginning with -S from the | |
403 | command line. | |
404 | %:function(args) | |
405 | Call the named function FUNCTION, passing it ARGS. ARGS is | |
406 | first processed as a nested spec string, then split into an | |
407 | argument vector in the usual fashion. The function returns | |
408 | a string which is processed as if it had appeared literally | |
409 | as part of the current spec. | |
410 | %{S} substitutes the -S switch, if that switch was given to GCC. | |
411 | If that switch was not specified, this substitutes nothing. | |
412 | Here S is a metasyntactic variable. | |
413 | %{S*} substitutes all the switches specified to GCC whose names start | |
414 | with -S. This is used for -o, -I, etc; switches that take | |
415 | arguments. GCC considers `-o foo' as being one switch whose | |
416 | name starts with `o'. %{o*} would substitute this text, | |
417 | including the space; thus, two arguments would be generated. | |
418 | %{S*&T*} likewise, but preserve order of S and T options (the order | |
419 | of S and T in the spec is not significant). Can be any number | |
420 | of ampersand-separated variables; for each the wild card is | |
421 | optional. Useful for CPP as %{D*&U*&A*}. | |
422 | ||
423 | %{S:X} substitutes X, if the -S switch was given to GCC. | |
424 | %{!S:X} substitutes X, if the -S switch was NOT given to GCC. | |
425 | %{S*:X} substitutes X if one or more switches whose names start | |
426 | with -S was given to GCC. Normally X is substituted only | |
427 | once, no matter how many such switches appeared. However, | |
428 | if %* appears somewhere in X, then X will be substituted | |
429 | once for each matching switch, with the %* replaced by the | |
430 | part of that switch that matched the '*'. A space will be | |
431 | appended after the last substition unless there is more | |
432 | text in current sequence. | |
433 | %{.S:X} substitutes X, if processing a file with suffix S. | |
434 | %{!.S:X} substitutes X, if NOT processing a file with suffix S. | |
435 | %{,S:X} substitutes X, if processing a file which will use spec S. | |
436 | %{!,S:X} substitutes X, if NOT processing a file which will use spec S. | |
437 | ||
438 | %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be | |
439 | combined with '!', '.', ',', and '*' as above binding stronger | |
440 | than the OR. | |
441 | If %* appears in X, all of the alternatives must be starred, and | |
442 | only the first matching alternative is substituted. | |
443 | %{%:function(args):X} | |
444 | Call function named FUNCTION with args ARGS. If the function | |
445 | returns non-NULL, then X is substituted, if it returns | |
446 | NULL, it isn't substituted. | |
447 | %{S:X; if S was given to GCC, substitutes X; | |
448 | T:Y; else if T was given to GCC, substitutes Y; | |
449 | :D} else substitutes D. There can be as many clauses as you need. | |
450 | This may be combined with '.', '!', ',', '|', and '*' as above. | |
451 | ||
452 | %(Spec) processes a specification defined in a specs file as *Spec: | |
453 | ||
454 | The conditional text X in a %{S:X} or similar construct may contain | |
455 | other nested % constructs or spaces, or even newlines. They are | |
456 | processed as usual, as described above. Trailing white space in X is | |
457 | ignored. White space may also appear anywhere on the left side of the | |
458 | colon in these constructs, except between . or * and the corresponding | |
459 | word. | |
460 | ||
461 | The -O, -f, -g, -m, and -W switches are handled specifically in these | |
462 | constructs. If another value of -O or the negated form of a -f, -m, or | |
463 | -W switch is found later in the command line, the earlier switch | |
464 | value is ignored, except with {S*} where S is just one letter; this | |
465 | passes all matching options. | |
466 | ||
467 | The character | at the beginning of the predicate text is used to indicate | |
468 | that a command should be piped to the following command, but only if -pipe | |
469 | is specified. | |
470 | ||
471 | Note that it is built into GCC which switches take arguments and which | |
472 | do not. You might think it would be useful to generalize this to | |
473 | allow each compiler's spec to say which switches take arguments. But | |
474 | this cannot be done in a consistent fashion. GCC cannot even decide | |
475 | which input files have been specified without knowing which switches | |
476 | take arguments, and it must know which input files to compile in order | |
477 | to tell which compilers to run. | |
478 | ||
479 | GCC also knows implicitly that arguments starting in `-l' are to be | |
480 | treated as compiler output files, and passed to the linker in their | |
481 | proper position among the other output files. */ | |
482 | \f | |
483 | /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */ | |
484 | ||
485 | /* config.h can define ASM_SPEC to provide extra args to the assembler | |
486 | or extra switch-translations. */ | |
487 | #ifndef ASM_SPEC | |
488 | #define ASM_SPEC "" | |
489 | #endif | |
490 | ||
491 | /* config.h can define ASM_FINAL_SPEC to run a post processor after | |
492 | the assembler has run. */ | |
493 | #ifndef ASM_FINAL_SPEC | |
494 | #define ASM_FINAL_SPEC \ | |
495 | "%{gsplit-dwarf: \n\ | |
496 | objcopy --extract-dwo \ | |
497 | %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \ | |
498 | %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\ | |
499 | objcopy --strip-dwo \ | |
500 | %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \ | |
501 | }" | |
502 | #endif | |
503 | ||
504 | /* config.h can define CPP_SPEC to provide extra args to the C preprocessor | |
505 | or extra switch-translations. */ | |
506 | #ifndef CPP_SPEC | |
507 | #define CPP_SPEC "" | |
508 | #endif | |
509 | ||
510 | /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus | |
511 | or extra switch-translations. */ | |
512 | #ifndef CC1_SPEC | |
513 | #define CC1_SPEC "" | |
514 | #endif | |
515 | ||
516 | /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus | |
517 | or extra switch-translations. */ | |
518 | #ifndef CC1PLUS_SPEC | |
519 | #define CC1PLUS_SPEC "" | |
520 | #endif | |
521 | ||
522 | /* config.h can define LINK_SPEC to provide extra args to the linker | |
523 | or extra switch-translations. */ | |
524 | #ifndef LINK_SPEC | |
525 | #define LINK_SPEC "" | |
526 | #endif | |
527 | ||
528 | /* config.h can define LIB_SPEC to override the default libraries. */ | |
529 | #ifndef LIB_SPEC | |
530 | #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" | |
531 | #endif | |
532 | ||
533 | /* When using -fsplit-stack we need to wrap pthread_create, in order | |
534 | to initialize the stack guard. We always use wrapping, rather than | |
535 | shared library ordering, and we keep the wrapper function in | |
536 | libgcc. This is not yet a real spec, though it could become one; | |
537 | it is currently just stuffed into LINK_SPEC. FIXME: This wrapping | |
538 | only works with GNU ld and gold. */ | |
539 | #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}" | |
540 | ||
541 | #ifndef LIBASAN_SPEC | |
542 | #define STATIC_LIBASAN_LIBS \ | |
543 | " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}" | |
544 | #ifdef LIBASAN_EARLY_SPEC | |
545 | #define LIBASAN_SPEC STATIC_LIBASAN_LIBS | |
546 | #elif defined(HAVE_LD_STATIC_DYNAMIC) | |
547 | #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \ | |
548 | "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \ | |
549 | STATIC_LIBASAN_LIBS | |
550 | #else | |
551 | #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS | |
552 | #endif | |
553 | #endif | |
554 | ||
555 | #ifndef LIBASAN_EARLY_SPEC | |
556 | #define LIBASAN_EARLY_SPEC "" | |
557 | #endif | |
558 | ||
559 | #ifndef LIBTSAN_SPEC | |
560 | #define STATIC_LIBTSAN_LIBS \ | |
561 | " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}" | |
562 | #ifdef LIBTSAN_EARLY_SPEC | |
563 | #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS | |
564 | #elif defined(HAVE_LD_STATIC_DYNAMIC) | |
565 | #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \ | |
566 | "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \ | |
567 | STATIC_LIBTSAN_LIBS | |
568 | #else | |
569 | #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS | |
570 | #endif | |
571 | #endif | |
572 | ||
573 | #ifndef LIBTSAN_EARLY_SPEC | |
574 | #define LIBTSAN_EARLY_SPEC "" | |
575 | #endif | |
576 | ||
577 | #ifndef LIBLSAN_SPEC | |
578 | #define STATIC_LIBLSAN_LIBS \ | |
579 | " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}" | |
580 | #ifdef LIBLSAN_EARLY_SPEC | |
581 | #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS | |
582 | #elif defined(HAVE_LD_STATIC_DYNAMIC) | |
583 | #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \ | |
584 | "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \ | |
585 | STATIC_LIBLSAN_LIBS | |
586 | #else | |
587 | #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS | |
588 | #endif | |
589 | #endif | |
590 | ||
591 | #ifndef LIBLSAN_EARLY_SPEC | |
592 | #define LIBLSAN_EARLY_SPEC "" | |
593 | #endif | |
594 | ||
595 | #ifndef LIBUBSAN_SPEC | |
596 | #define STATIC_LIBUBSAN_LIBS \ | |
597 | " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}" | |
598 | #ifdef HAVE_LD_STATIC_DYNAMIC | |
599 | #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \ | |
600 | "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \ | |
601 | STATIC_LIBUBSAN_LIBS | |
602 | #else | |
603 | #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS | |
604 | #endif | |
605 | #endif | |
606 | ||
607 | /* Linker options for compressed debug sections. */ | |
608 | #if HAVE_LD_COMPRESS_DEBUG == 0 | |
609 | /* No linker support. */ | |
610 | #define LINK_COMPRESS_DEBUG_SPEC \ | |
611 | " %{gz*:%e-gz is not supported in this configuration} " | |
612 | #elif HAVE_LD_COMPRESS_DEBUG == 1 | |
613 | /* GNU style on input, GNU ld options. Reject, not useful. */ | |
614 | #define LINK_COMPRESS_DEBUG_SPEC \ | |
615 | " %{gz*:%e-gz is not supported in this configuration} " | |
616 | #elif HAVE_LD_COMPRESS_DEBUG == 2 | |
617 | /* GNU style, GNU gold options. */ | |
618 | #define LINK_COMPRESS_DEBUG_SPEC \ | |
619 | " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \ | |
620 | " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \ | |
621 | " %{gz=zlib:%e-gz=zlib is not supported in this configuration} " | |
622 | #elif HAVE_LD_COMPRESS_DEBUG == 3 | |
623 | /* ELF gABI style. */ | |
624 | #define LINK_COMPRESS_DEBUG_SPEC \ | |
625 | " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \ | |
626 | " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \ | |
627 | " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} " | |
628 | #else | |
629 | #error Unknown value for HAVE_LD_COMPRESS_DEBUG. | |
630 | #endif | |
631 | ||
632 | /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is | |
633 | included. */ | |
634 | #ifndef LIBGCC_SPEC | |
635 | #if defined(REAL_LIBGCC_SPEC) | |
636 | #define LIBGCC_SPEC REAL_LIBGCC_SPEC | |
637 | #elif defined(LINK_LIBGCC_SPECIAL_1) | |
638 | /* Have gcc do the search for libgcc.a. */ | |
639 | #define LIBGCC_SPEC "libgcc.a%s" | |
640 | #else | |
641 | #define LIBGCC_SPEC "-lgcc" | |
642 | #endif | |
643 | #endif | |
644 | ||
645 | /* config.h can define STARTFILE_SPEC to override the default crt0 files. */ | |
646 | #ifndef STARTFILE_SPEC | |
647 | #define STARTFILE_SPEC \ | |
648 | "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}" | |
649 | #endif | |
650 | ||
651 | /* config.h can define ENDFILE_SPEC to override the default crtn files. */ | |
652 | #ifndef ENDFILE_SPEC | |
653 | #define ENDFILE_SPEC "" | |
654 | #endif | |
655 | ||
656 | #ifndef LINKER_NAME | |
657 | #define LINKER_NAME "collect2" | |
658 | #endif | |
659 | ||
660 | #ifdef HAVE_AS_DEBUG_PREFIX_MAP | |
661 | #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}" | |
662 | #else | |
663 | #define ASM_MAP "" | |
664 | #endif | |
665 | ||
666 | /* Assembler options for compressed debug sections. */ | |
667 | #if HAVE_LD_COMPRESS_DEBUG < 2 | |
668 | /* Reject if the linker cannot write compressed debug sections. */ | |
669 | #define ASM_COMPRESS_DEBUG_SPEC \ | |
670 | " %{gz*:%e-gz is not supported in this configuration} " | |
671 | #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */ | |
672 | #if HAVE_AS_COMPRESS_DEBUG == 0 | |
673 | /* No assembler support. Ignore silently. */ | |
674 | #define ASM_COMPRESS_DEBUG_SPEC \ | |
675 | " %{gz*:} " | |
676 | #elif HAVE_AS_COMPRESS_DEBUG == 1 | |
677 | /* GNU style, GNU as options. */ | |
678 | #define ASM_COMPRESS_DEBUG_SPEC \ | |
679 | " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \ | |
680 | " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \ | |
681 | " %{gz=zlib:%e-gz=zlib is not supported in this configuration} " | |
682 | #elif HAVE_AS_COMPRESS_DEBUG == 2 | |
683 | /* ELF gABI style. */ | |
684 | #define ASM_COMPRESS_DEBUG_SPEC \ | |
685 | " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \ | |
686 | " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \ | |
687 | " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} " | |
688 | #else | |
689 | #error Unknown value for HAVE_AS_COMPRESS_DEBUG. | |
690 | #endif | |
691 | #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */ | |
692 | ||
693 | /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' | |
694 | to the assembler. */ | |
695 | #ifndef ASM_DEBUG_SPEC | |
696 | # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \ | |
697 | && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) | |
698 | # define ASM_DEBUG_SPEC \ | |
699 | (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \ | |
700 | ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \ | |
701 | : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP) | |
702 | # else | |
703 | # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) | |
704 | # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP | |
705 | # endif | |
706 | # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) | |
707 | # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP | |
708 | # endif | |
709 | # endif | |
710 | #endif | |
711 | #ifndef ASM_DEBUG_SPEC | |
712 | # define ASM_DEBUG_SPEC "" | |
713 | #endif | |
714 | ||
715 | /* Here is the spec for running the linker, after compiling all files. */ | |
716 | ||
717 | /* This is overridable by the target in case they need to specify the | |
718 | -lgcc and -lc order specially, yet not require them to override all | |
719 | of LINK_COMMAND_SPEC. */ | |
720 | #ifndef LINK_GCC_C_SEQUENCE_SPEC | |
721 | #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G" | |
722 | #endif | |
723 | ||
724 | #ifndef LINK_SSP_SPEC | |
725 | #ifdef TARGET_LIBC_PROVIDES_SSP | |
726 | #define LINK_SSP_SPEC "%{fstack-protector:}" | |
727 | #else | |
728 | #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}" | |
729 | #endif | |
730 | #endif | |
731 | ||
732 | #ifndef LINK_PIE_SPEC | |
733 | #ifdef HAVE_LD_PIE | |
734 | #define LINK_PIE_SPEC "%{pie:-pie} " | |
735 | #else | |
736 | #define LINK_PIE_SPEC "%{pie:} " | |
737 | #endif | |
738 | #endif | |
739 | ||
740 | #ifndef LINK_BUILDID_SPEC | |
741 | # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID) | |
742 | # define LINK_BUILDID_SPEC "%{!r:--build-id} " | |
743 | # endif | |
744 | #endif | |
745 | ||
746 | /* Conditional to test whether the LTO plugin is used or not. | |
747 | FIXME: For slim LTO we will need to enable plugin unconditionally. This | |
748 | still cause problems with PLUGIN_LD != LD and when plugin is built but | |
749 | not useable. For GCC 4.6 we don't support slim LTO and thus we can enable | |
750 | plugin only when LTO is enabled. We still honor explicit | |
751 | -fuse-linker-plugin if the linker used understands -plugin. */ | |
752 | ||
753 | /* The linker has some plugin support. */ | |
754 | #if HAVE_LTO_PLUGIN > 0 | |
755 | /* The linker used has full plugin support, use LTO plugin by default. */ | |
756 | #if HAVE_LTO_PLUGIN == 2 | |
757 | #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto" | |
758 | #define PLUGIN_COND_CLOSE "}" | |
759 | #else | |
760 | /* The linker used has limited plugin support, use LTO plugin with explicit | |
761 | -fuse-linker-plugin. */ | |
762 | #define PLUGIN_COND "fuse-linker-plugin" | |
763 | #define PLUGIN_COND_CLOSE "" | |
764 | #endif | |
765 | #define LINK_PLUGIN_SPEC \ | |
766 | "%{"PLUGIN_COND": \ | |
767 | -plugin %(linker_plugin_file) \ | |
768 | -plugin-opt=%(lto_wrapper) \ | |
769 | -plugin-opt=-fresolution=%u.res \ | |
770 | %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \ | |
771 | }"PLUGIN_COND_CLOSE | |
772 | #else | |
773 | /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */ | |
774 | #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\ | |
775 | %e-fuse-linker-plugin is not supported in this configuration}" | |
776 | #endif | |
777 | ||
778 | /* Linker command line options for -fsanitize= early on the command line. */ | |
779 | #ifndef SANITIZER_EARLY_SPEC | |
780 | #define SANITIZER_EARLY_SPEC "\ | |
781 | %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \ | |
782 | %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \ | |
783 | %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}" | |
784 | #endif | |
785 | ||
786 | /* Linker command line options for -fsanitize= late on the command line. */ | |
787 | #ifndef SANITIZER_SPEC | |
788 | #define SANITIZER_SPEC "\ | |
789 | %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\ | |
790 | %{static:%ecannot specify -static with -fsanitize=address}}\ | |
791 | %{%:sanitize(thread):" LIBTSAN_SPEC "\ | |
792 | %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}\ | |
793 | %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\ | |
794 | %{%:sanitize(leak):" LIBLSAN_SPEC "}}}" | |
795 | #endif | |
796 | ||
797 | /* This is the spec to use, once the code for creating the vtable | |
798 | verification runtime library, libvtv.so, has been created. Currently | |
799 | the vtable verification runtime functions are in libstdc++, so we use | |
800 | the spec just below this one. */ | |
801 | #ifndef VTABLE_VERIFICATION_SPEC | |
802 | #define VTABLE_VERIFICATION_SPEC "\ | |
803 | %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\ | |
804 | %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}" | |
805 | #endif | |
806 | ||
807 | /* -u* was put back because both BSD and SysV seem to support it. */ | |
808 | /* %{static:} simply prevents an error message if the target machine | |
809 | doesn't handle -static. */ | |
810 | /* We want %{T*} after %{L*} and %D so that it can be used to specify linker | |
811 | scripts which exist in user specified directories, or in standard | |
812 | directories. */ | |
813 | /* We pass any -flto flags on to the linker, which is expected | |
814 | to understand them. In practice, this means it had better be collect2. */ | |
815 | /* %{e*} includes -export-dynamic; see comment in common.opt. */ | |
816 | #ifndef LINK_COMMAND_SPEC | |
817 | #define LINK_COMMAND_SPEC "\ | |
818 | %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ | |
819 | %(linker) " \ | |
820 | LINK_PLUGIN_SPEC \ | |
821 | "%{flto|flto=*:%<fcompare-debug*} \ | |
822 | %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \ | |
823 | "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \ | |
824 | "%X %{o*} %{e*} %{N} %{n} %{r}\ | |
825 | %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \ | |
826 | %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\ | |
827 | %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\ | |
828 | %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\ | |
829 | %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\ | |
830 | %(mflib) " STACK_SPLIT_SPEC "\ | |
831 | %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \ | |
832 | %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\ | |
833 | %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}" | |
834 | #endif | |
835 | ||
836 | #ifndef LINK_LIBGCC_SPEC | |
837 | /* Generate -L options for startfile prefix list. */ | |
838 | # define LINK_LIBGCC_SPEC "%D" | |
839 | #endif | |
840 | ||
841 | #ifndef STARTFILE_PREFIX_SPEC | |
842 | # define STARTFILE_PREFIX_SPEC "" | |
843 | #endif | |
844 | ||
845 | #ifndef SYSROOT_SPEC | |
846 | # define SYSROOT_SPEC "--sysroot=%R" | |
847 | #endif | |
848 | ||
849 | #ifndef SYSROOT_SUFFIX_SPEC | |
850 | # define SYSROOT_SUFFIX_SPEC "" | |
851 | #endif | |
852 | ||
853 | #ifndef SYSROOT_HEADERS_SUFFIX_SPEC | |
854 | # define SYSROOT_HEADERS_SUFFIX_SPEC "" | |
855 | #endif | |
856 | ||
857 | static const char *asm_debug = ASM_DEBUG_SPEC; | |
858 | static const char *cpp_spec = CPP_SPEC; | |
859 | static const char *cc1_spec = CC1_SPEC; | |
860 | static const char *cc1plus_spec = CC1PLUS_SPEC; | |
861 | static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC; | |
862 | static const char *link_ssp_spec = LINK_SSP_SPEC; | |
863 | static const char *asm_spec = ASM_SPEC; | |
864 | static const char *asm_final_spec = ASM_FINAL_SPEC; | |
865 | static const char *link_spec = LINK_SPEC; | |
866 | static const char *lib_spec = LIB_SPEC; | |
867 | static const char *link_gomp_spec = ""; | |
868 | static const char *libgcc_spec = LIBGCC_SPEC; | |
869 | static const char *endfile_spec = ENDFILE_SPEC; | |
870 | static const char *startfile_spec = STARTFILE_SPEC; | |
871 | static const char *linker_name_spec = LINKER_NAME; | |
872 | static const char *linker_plugin_file_spec = ""; | |
873 | static const char *lto_wrapper_spec = ""; | |
874 | static const char *lto_gcc_spec = ""; | |
875 | static const char *link_command_spec = LINK_COMMAND_SPEC; | |
876 | static const char *link_libgcc_spec = LINK_LIBGCC_SPEC; | |
877 | static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC; | |
878 | static const char *sysroot_spec = SYSROOT_SPEC; | |
879 | static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC; | |
880 | static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC; | |
881 | static const char *self_spec = ""; | |
882 | ||
883 | /* Standard options to cpp, cc1, and as, to reduce duplication in specs. | |
884 | There should be no need to override these in target dependent files, | |
885 | but we need to copy them to the specs file so that newer versions | |
886 | of the GCC driver can correctly drive older tool chains with the | |
887 | appropriate -B options. */ | |
888 | ||
889 | /* When cpplib handles traditional preprocessing, get rid of this, and | |
890 | call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so | |
891 | that we default the front end language better. */ | |
892 | static const char *trad_capable_cpp = | |
893 | "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}"; | |
894 | ||
895 | /* We don't wrap .d files in %W{} since a missing .d file, and | |
896 | therefore no dependency entry, confuses make into thinking a .o | |
897 | file that happens to exist is up-to-date. */ | |
898 | static const char *cpp_unique_options = | |
899 | "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\ | |
900 | %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\ | |
901 | %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\ | |
902 | %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\ | |
903 | %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\ | |
904 | %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\ | |
905 | %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ | |
906 | %{H} %C %{D*&U*&A*} %{i*} %Z %i\ | |
907 | %{E|M|MM:%W{o*}}"; | |
908 | ||
909 | /* This contains cpp options which are common with cc1_options and are passed | |
910 | only when preprocessing only to avoid duplication. We pass the cc1 spec | |
911 | options to the preprocessor so that it the cc1 spec may manipulate | |
912 | options used to set target flags. Those special target flags settings may | |
913 | in turn cause preprocessor symbols to be defined specially. */ | |
914 | static const char *cpp_options = | |
915 | "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\ | |
916 | %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\ | |
917 | %{undef} %{save-temps*:-fpch-preprocess}"; | |
918 | ||
919 | /* This contains cpp options which are not passed when the preprocessor | |
920 | output will be used by another program. */ | |
921 | static const char *cpp_debug_options = "%{d*}"; | |
922 | ||
923 | /* NB: This is shared amongst all front-ends, except for Ada. */ | |
924 | static const char *cc1_options = | |
925 | "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ | |
926 | %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ | |
927 | %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\ | |
928 | %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \ | |
929 | %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \ | |
930 | %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\ | |
931 | %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\ | |
932 | %{Qn:-fno-ident} %{Qy:} %{-help:--help}\ | |
933 | %{-target-help:--target-help}\ | |
934 | %{-version:--version}\ | |
935 | %{-help=*:--help=%*}\ | |
936 | %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\ | |
937 | %{fsyntax-only:-o %j} %{-param*}\ | |
938 | %{coverage:-fprofile-arcs -ftest-coverage}"; | |
939 | ||
940 | static const char *asm_options = | |
941 | "%{-target-help:%:print-asm-header()} " | |
942 | #if HAVE_GNU_AS | |
943 | /* If GNU AS is used, then convert -w (no warnings), -I, and -v | |
944 | to the assembler equivalents. */ | |
945 | "%{v} %{w:-W} %{I*} " | |
946 | #endif | |
947 | ASM_COMPRESS_DEBUG_SPEC | |
948 | "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}"; | |
949 | ||
950 | static const char *invoke_as = | |
951 | #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT | |
952 | "%{!fwpa*:\ | |
953 | %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ | |
954 | %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\ | |
955 | }"; | |
956 | #else | |
957 | "%{!fwpa*:\ | |
958 | %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ | |
959 | %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\ | |
960 | }"; | |
961 | #endif | |
962 | ||
963 | /* Some compilers have limits on line lengths, and the multilib_select | |
964 | and/or multilib_matches strings can be very long, so we build them at | |
965 | run time. */ | |
966 | static struct obstack multilib_obstack; | |
967 | static const char *multilib_select; | |
968 | static const char *multilib_matches; | |
969 | static const char *multilib_defaults; | |
970 | static const char *multilib_exclusions; | |
971 | static const char *multilib_reuse; | |
972 | ||
973 | /* Check whether a particular argument is a default argument. */ | |
974 | ||
975 | #ifndef MULTILIB_DEFAULTS | |
976 | #define MULTILIB_DEFAULTS { "" } | |
977 | #endif | |
978 | ||
979 | static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; | |
980 | ||
981 | #ifndef DRIVER_SELF_SPECS | |
982 | #define DRIVER_SELF_SPECS "" | |
983 | #endif | |
984 | ||
985 | /* Linking to libgomp implies pthreads. This is particularly important | |
986 | for targets that use different start files and suchlike. */ | |
987 | #ifndef GOMP_SELF_SPECS | |
988 | #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}" | |
989 | #endif | |
990 | ||
991 | /* Likewise for -fgnu-tm. */ | |
992 | #ifndef GTM_SELF_SPECS | |
993 | #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}" | |
994 | #endif | |
995 | ||
996 | /* Likewise for -fcilkplus. */ | |
997 | #ifndef CILK_SELF_SPECS | |
998 | #define CILK_SELF_SPECS "%{fcilkplus: -pthread}" | |
999 | #endif | |
1000 | ||
1001 | static const char *const driver_self_specs[] = { | |
1002 | "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns", | |
1003 | DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS, | |
1004 | CILK_SELF_SPECS | |
1005 | }; | |
1006 | ||
1007 | #ifndef OPTION_DEFAULT_SPECS | |
1008 | #define OPTION_DEFAULT_SPECS { "", "" } | |
1009 | #endif | |
1010 | ||
1011 | struct default_spec | |
1012 | { | |
1013 | const char *name; | |
1014 | const char *spec; | |
1015 | }; | |
1016 | ||
1017 | static const struct default_spec | |
1018 | option_default_specs[] = { OPTION_DEFAULT_SPECS }; | |
1019 | ||
1020 | struct user_specs | |
1021 | { | |
1022 | struct user_specs *next; | |
1023 | const char *filename; | |
1024 | }; | |
1025 | ||
1026 | static struct user_specs *user_specs_head, *user_specs_tail; | |
1027 | ||
1028 | \f | |
1029 | /* Record the mapping from file suffixes for compilation specs. */ | |
1030 | ||
1031 | struct compiler | |
1032 | { | |
1033 | const char *suffix; /* Use this compiler for input files | |
1034 | whose names end in this suffix. */ | |
1035 | ||
1036 | const char *spec; /* To use this compiler, run this spec. */ | |
1037 | ||
1038 | const char *cpp_spec; /* If non-NULL, substitute this spec | |
1039 | for `%C', rather than the usual | |
1040 | cpp_spec. */ | |
1041 | const int combinable; /* If nonzero, compiler can deal with | |
1042 | multiple source files at once (IMA). */ | |
1043 | const int needs_preprocessing; /* If nonzero, source files need to | |
1044 | be run through a preprocessor. */ | |
1045 | }; | |
1046 | ||
1047 | /* Pointer to a vector of `struct compiler' that gives the spec for | |
1048 | compiling a file, based on its suffix. | |
1049 | A file that does not end in any of these suffixes will be passed | |
1050 | unchanged to the loader and nothing else will be done to it. | |
1051 | ||
1052 | An entry containing two 0s is used to terminate the vector. | |
1053 | ||
1054 | If multiple entries match a file, the last matching one is used. */ | |
1055 | ||
1056 | static struct compiler *compilers; | |
1057 | ||
1058 | /* Number of entries in `compilers', not counting the null terminator. */ | |
1059 | ||
1060 | static int n_compilers; | |
1061 | ||
1062 | /* The default list of file name suffixes and their compilation specs. */ | |
1063 | ||
1064 | static const struct compiler default_compilers[] = | |
1065 | { | |
1066 | /* Add lists of suffixes of known languages here. If those languages | |
1067 | were not present when we built the driver, we will hit these copies | |
1068 | and be given a more meaningful error than "file not used since | |
1069 | linking is not done". */ | |
1070 | {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0}, | |
1071 | {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0}, | |
1072 | {".mii", "#Objective-C++", 0, 0, 0}, | |
1073 | {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0}, | |
1074 | {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0}, | |
1075 | {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0}, | |
1076 | {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0}, | |
1077 | {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0}, | |
1078 | {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0}, | |
1079 | {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0}, | |
1080 | {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0}, | |
1081 | {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0}, | |
1082 | {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0}, | |
1083 | {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0}, | |
1084 | {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0}, | |
1085 | {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0}, | |
1086 | {".r", "#Ratfor", 0, 0, 0}, | |
1087 | {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0}, | |
1088 | {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0}, | |
1089 | {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0}, | |
1090 | {".go", "#Go", 0, 1, 0}, | |
1091 | /* Next come the entries for C. */ | |
1092 | {".c", "@c", 0, 0, 1}, | |
1093 | {"@c", | |
1094 | /* cc1 has an integrated ISO C preprocessor. We should invoke the | |
1095 | external preprocessor if -save-temps is given. */ | |
1096 | "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ | |
1097 | %{!E:%{!M:%{!MM:\ | |
1098 | %{traditional:\ | |
1099 | %eGNU C no longer supports -traditional without -E}\ | |
1100 | %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ | |
1101 | %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ | |
1102 | cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ | |
1103 | %(cc1_options)}\ | |
1104 | %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ | |
1105 | cc1 %(cpp_unique_options) %(cc1_options)}}}\ | |
1106 | %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1}, | |
1107 | {"-", | |
1108 | "%{!E:%e-E or -x required when input is from standard input}\ | |
1109 | %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0}, | |
1110 | {".h", "@c-header", 0, 0, 0}, | |
1111 | {"@c-header", | |
1112 | /* cc1 has an integrated ISO C preprocessor. We should invoke the | |
1113 | external preprocessor if -save-temps is given. */ | |
1114 | "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ | |
1115 | %{!E:%{!M:%{!MM:\ | |
1116 | %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ | |
1117 | %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ | |
1118 | cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ | |
1119 | %(cc1_options)\ | |
1120 | %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\ | |
1121 | %W{o*:--output-pch=%*}}%V}\ | |
1122 | %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ | |
1123 | cc1 %(cpp_unique_options) %(cc1_options)\ | |
1124 | %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\ | |
1125 | %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0}, | |
1126 | {".i", "@cpp-output", 0, 0, 0}, | |
1127 | {"@cpp-output", | |
1128 | "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0}, | |
1129 | {".s", "@assembler", 0, 0, 0}, | |
1130 | {"@assembler", | |
1131 | "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0}, | |
1132 | {".sx", "@assembler-with-cpp", 0, 0, 0}, | |
1133 | {".S", "@assembler-with-cpp", 0, 0, 0}, | |
1134 | {"@assembler-with-cpp", | |
1135 | #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT | |
1136 | "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ | |
1137 | %{E|M|MM:%(cpp_debug_options)}\ | |
1138 | %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ | |
1139 | as %(asm_debug) %(asm_options) %|.s %A }}}}" | |
1140 | #else | |
1141 | "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ | |
1142 | %{E|M|MM:%(cpp_debug_options)}\ | |
1143 | %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ | |
1144 | as %(asm_debug) %(asm_options) %m.s %A }}}}" | |
1145 | #endif | |
1146 | , 0, 0, 0}, | |
1147 | ||
1148 | #include "specs.h" | |
1149 | /* Mark end of table. */ | |
1150 | {0, 0, 0, 0, 0} | |
1151 | }; | |
1152 | ||
1153 | /* Number of elements in default_compilers, not counting the terminator. */ | |
1154 | ||
1155 | static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1; | |
1156 | ||
1157 | typedef char *char_p; /* For DEF_VEC_P. */ | |
1158 | ||
1159 | /* A vector of options to give to the linker. | |
1160 | These options are accumulated by %x, | |
1161 | and substituted into the linker command with %X. */ | |
1162 | static vec<char_p> linker_options; | |
1163 | ||
1164 | /* A vector of options to give to the assembler. | |
1165 | These options are accumulated by -Wa, | |
1166 | and substituted into the assembler command with %Y. */ | |
1167 | static vec<char_p> assembler_options; | |
1168 | ||
1169 | /* A vector of options to give to the preprocessor. | |
1170 | These options are accumulated by -Wp, | |
1171 | and substituted into the preprocessor command with %Z. */ | |
1172 | static vec<char_p> preprocessor_options; | |
1173 | \f | |
1174 | static char * | |
1175 | skip_whitespace (char *p) | |
1176 | { | |
1177 | while (1) | |
1178 | { | |
1179 | /* A fully-blank line is a delimiter in the SPEC file and shouldn't | |
1180 | be considered whitespace. */ | |
1181 | if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') | |
1182 | return p + 1; | |
1183 | else if (*p == '\n' || *p == ' ' || *p == '\t') | |
1184 | p++; | |
1185 | else if (*p == '#') | |
1186 | { | |
1187 | while (*p != '\n') | |
1188 | p++; | |
1189 | p++; | |
1190 | } | |
1191 | else | |
1192 | break; | |
1193 | } | |
1194 | ||
1195 | return p; | |
1196 | } | |
1197 | /* Structures to keep track of prefixes to try when looking for files. */ | |
1198 | ||
1199 | struct prefix_list | |
1200 | { | |
1201 | const char *prefix; /* String to prepend to the path. */ | |
1202 | struct prefix_list *next; /* Next in linked list. */ | |
1203 | int require_machine_suffix; /* Don't use without machine_suffix. */ | |
1204 | /* 2 means try both machine_suffix and just_machine_suffix. */ | |
1205 | int priority; /* Sort key - priority within list. */ | |
1206 | int os_multilib; /* 1 if OS multilib scheme should be used, | |
1207 | 0 for GCC multilib scheme. */ | |
1208 | }; | |
1209 | ||
1210 | struct path_prefix | |
1211 | { | |
1212 | struct prefix_list *plist; /* List of prefixes to try */ | |
1213 | int max_len; /* Max length of a prefix in PLIST */ | |
1214 | const char *name; /* Name of this list (used in config stuff) */ | |
1215 | }; | |
1216 | ||
1217 | /* List of prefixes to try when looking for executables. */ | |
1218 | ||
1219 | static struct path_prefix exec_prefixes = { 0, 0, "exec" }; | |
1220 | ||
1221 | /* List of prefixes to try when looking for startup (crt0) files. */ | |
1222 | ||
1223 | static struct path_prefix startfile_prefixes = { 0, 0, "startfile" }; | |
1224 | ||
1225 | /* List of prefixes to try when looking for include files. */ | |
1226 | ||
1227 | static struct path_prefix include_prefixes = { 0, 0, "include" }; | |
1228 | ||
1229 | /* Suffix to attach to directories searched for commands. | |
1230 | This looks like `MACHINE/VERSION/'. */ | |
1231 | ||
1232 | static const char *machine_suffix = 0; | |
1233 | ||
1234 | /* Suffix to attach to directories searched for commands. | |
1235 | This is just `MACHINE/'. */ | |
1236 | ||
1237 | static const char *just_machine_suffix = 0; | |
1238 | ||
1239 | /* Adjusted value of GCC_EXEC_PREFIX envvar. */ | |
1240 | ||
1241 | static const char *gcc_exec_prefix; | |
1242 | ||
1243 | /* Adjusted value of standard_libexec_prefix. */ | |
1244 | ||
1245 | static const char *gcc_libexec_prefix; | |
1246 | ||
1247 | /* Default prefixes to attach to command names. */ | |
1248 | ||
1249 | #ifndef STANDARD_STARTFILE_PREFIX_1 | |
1250 | #define STANDARD_STARTFILE_PREFIX_1 "/lib/" | |
1251 | #endif | |
1252 | #ifndef STANDARD_STARTFILE_PREFIX_2 | |
1253 | #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/" | |
1254 | #endif | |
1255 | ||
1256 | #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */ | |
1257 | #undef MD_EXEC_PREFIX | |
1258 | #undef MD_STARTFILE_PREFIX | |
1259 | #undef MD_STARTFILE_PREFIX_1 | |
1260 | #endif | |
1261 | ||
1262 | /* If no prefixes defined, use the null string, which will disable them. */ | |
1263 | #ifndef MD_EXEC_PREFIX | |
1264 | #define MD_EXEC_PREFIX "" | |
1265 | #endif | |
1266 | #ifndef MD_STARTFILE_PREFIX | |
1267 | #define MD_STARTFILE_PREFIX "" | |
1268 | #endif | |
1269 | #ifndef MD_STARTFILE_PREFIX_1 | |
1270 | #define MD_STARTFILE_PREFIX_1 "" | |
1271 | #endif | |
1272 | ||
1273 | /* These directories are locations set at configure-time based on the | |
1274 | --prefix option provided to configure. Their initializers are | |
1275 | defined in Makefile.in. These paths are not *directly* used when | |
1276 | gcc_exec_prefix is set because, in that case, we know where the | |
1277 | compiler has been installed, and use paths relative to that | |
1278 | location instead. */ | |
1279 | static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; | |
1280 | static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX; | |
1281 | static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; | |
1282 | static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; | |
1283 | ||
1284 | /* For native compilers, these are well-known paths containing | |
1285 | components that may be provided by the system. For cross | |
1286 | compilers, these paths are not used. */ | |
1287 | static const char *md_exec_prefix = MD_EXEC_PREFIX; | |
1288 | static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; | |
1289 | static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; | |
1290 | static const char *const standard_startfile_prefix_1 | |
1291 | = STANDARD_STARTFILE_PREFIX_1; | |
1292 | static const char *const standard_startfile_prefix_2 | |
1293 | = STANDARD_STARTFILE_PREFIX_2; | |
1294 | ||
1295 | /* A relative path to be used in finding the location of tools | |
1296 | relative to the driver. */ | |
1297 | static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; | |
1298 | ||
1299 | /* Subdirectory to use for locating libraries. Set by | |
1300 | set_multilib_dir based on the compilation options. */ | |
1301 | ||
1302 | static const char *multilib_dir; | |
1303 | ||
1304 | /* Subdirectory to use for locating libraries in OS conventions. Set by | |
1305 | set_multilib_dir based on the compilation options. */ | |
1306 | ||
1307 | static const char *multilib_os_dir; | |
1308 | ||
1309 | /* Subdirectory to use for locating libraries in multiarch conventions. Set by | |
1310 | set_multilib_dir based on the compilation options. */ | |
1311 | ||
1312 | static const char *multiarch_dir; | |
1313 | \f | |
1314 | /* Structure to keep track of the specs that have been defined so far. | |
1315 | These are accessed using %(specname) in a compiler or link | |
1316 | spec. */ | |
1317 | ||
1318 | struct spec_list | |
1319 | { | |
1320 | /* The following 2 fields must be first */ | |
1321 | /* to allow EXTRA_SPECS to be initialized */ | |
1322 | const char *name; /* name of the spec. */ | |
1323 | const char *ptr; /* available ptr if no static pointer */ | |
1324 | ||
1325 | /* The following fields are not initialized */ | |
1326 | /* by EXTRA_SPECS */ | |
1327 | const char **ptr_spec; /* pointer to the spec itself. */ | |
1328 | struct spec_list *next; /* Next spec in linked list. */ | |
1329 | int name_len; /* length of the name */ | |
1330 | bool user_p; /* whether string come from file spec. */ | |
1331 | bool alloc_p; /* whether string was allocated */ | |
1332 | }; | |
1333 | ||
1334 | #define INIT_STATIC_SPEC(NAME,PTR) \ | |
1335 | { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false } | |
1336 | ||
1337 | /* List of statically defined specs. */ | |
1338 | static struct spec_list static_specs[] = | |
1339 | { | |
1340 | INIT_STATIC_SPEC ("asm", &asm_spec), | |
1341 | INIT_STATIC_SPEC ("asm_debug", &asm_debug), | |
1342 | INIT_STATIC_SPEC ("asm_final", &asm_final_spec), | |
1343 | INIT_STATIC_SPEC ("asm_options", &asm_options), | |
1344 | INIT_STATIC_SPEC ("invoke_as", &invoke_as), | |
1345 | INIT_STATIC_SPEC ("cpp", &cpp_spec), | |
1346 | INIT_STATIC_SPEC ("cpp_options", &cpp_options), | |
1347 | INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options), | |
1348 | INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options), | |
1349 | INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp), | |
1350 | INIT_STATIC_SPEC ("cc1", &cc1_spec), | |
1351 | INIT_STATIC_SPEC ("cc1_options", &cc1_options), | |
1352 | INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec), | |
1353 | INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec), | |
1354 | INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec), | |
1355 | INIT_STATIC_SPEC ("endfile", &endfile_spec), | |
1356 | INIT_STATIC_SPEC ("link", &link_spec), | |
1357 | INIT_STATIC_SPEC ("lib", &lib_spec), | |
1358 | INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec), | |
1359 | INIT_STATIC_SPEC ("libgcc", &libgcc_spec), | |
1360 | INIT_STATIC_SPEC ("startfile", &startfile_spec), | |
1361 | INIT_STATIC_SPEC ("cross_compile", &cross_compile), | |
1362 | INIT_STATIC_SPEC ("version", &compiler_version), | |
1363 | INIT_STATIC_SPEC ("multilib", &multilib_select), | |
1364 | INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults), | |
1365 | INIT_STATIC_SPEC ("multilib_extra", &multilib_extra), | |
1366 | INIT_STATIC_SPEC ("multilib_matches", &multilib_matches), | |
1367 | INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions), | |
1368 | INIT_STATIC_SPEC ("multilib_options", &multilib_options), | |
1369 | INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse), | |
1370 | INIT_STATIC_SPEC ("linker", &linker_name_spec), | |
1371 | INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec), | |
1372 | INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec), | |
1373 | INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec), | |
1374 | INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec), | |
1375 | INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix), | |
1376 | INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix), | |
1377 | INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1), | |
1378 | INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec), | |
1379 | INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec), | |
1380 | INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec), | |
1381 | INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec), | |
1382 | INIT_STATIC_SPEC ("self_spec", &self_spec), | |
1383 | }; | |
1384 | ||
1385 | #ifdef EXTRA_SPECS /* additional specs needed */ | |
1386 | /* Structure to keep track of just the first two args of a spec_list. | |
1387 | That is all that the EXTRA_SPECS macro gives us. */ | |
1388 | struct spec_list_1 | |
1389 | { | |
1390 | const char *const name; | |
1391 | const char *const ptr; | |
1392 | }; | |
1393 | ||
1394 | static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS }; | |
1395 | static struct spec_list *extra_specs = (struct spec_list *) 0; | |
1396 | #endif | |
1397 | ||
1398 | /* List of dynamically allocates specs that have been defined so far. */ | |
1399 | ||
1400 | static struct spec_list *specs = (struct spec_list *) 0; | |
1401 | \f | |
1402 | /* List of static spec functions. */ | |
1403 | ||
1404 | static const struct spec_function static_spec_functions[] = | |
1405 | { | |
1406 | { "getenv", getenv_spec_function }, | |
1407 | { "if-exists", if_exists_spec_function }, | |
1408 | { "if-exists-else", if_exists_else_spec_function }, | |
1409 | { "sanitize", sanitize_spec_function }, | |
1410 | { "replace-outfile", replace_outfile_spec_function }, | |
1411 | { "remove-outfile", remove_outfile_spec_function }, | |
1412 | { "version-compare", version_compare_spec_function }, | |
1413 | { "include", include_spec_function }, | |
1414 | { "find-file", find_file_spec_function }, | |
1415 | { "find-plugindir", find_plugindir_spec_function }, | |
1416 | { "print-asm-header", print_asm_header_spec_function }, | |
1417 | { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function }, | |
1418 | { "compare-debug-self-opt", compare_debug_self_opt_spec_function }, | |
1419 | { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function }, | |
1420 | { "pass-through-libs", pass_through_libs_spec_func }, | |
1421 | { "replace-extension", replace_extension_spec_func }, | |
1422 | #ifdef EXTRA_SPEC_FUNCTIONS | |
1423 | EXTRA_SPEC_FUNCTIONS | |
1424 | #endif | |
1425 | { 0, 0 } | |
1426 | }; | |
1427 | ||
1428 | static int processing_spec_function; | |
1429 | \f | |
1430 | /* Add appropriate libgcc specs to OBSTACK, taking into account | |
1431 | various permutations of -shared-libgcc, -shared, and such. */ | |
1432 | ||
1433 | #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) | |
1434 | ||
1435 | #ifndef USE_LD_AS_NEEDED | |
1436 | #define USE_LD_AS_NEEDED 0 | |
1437 | #endif | |
1438 | ||
1439 | static void | |
1440 | init_gcc_specs (struct obstack *obstack, const char *shared_name, | |
1441 | const char *static_name, const char *eh_name) | |
1442 | { | |
1443 | char *buf; | |
1444 | ||
1445 | buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}" | |
1446 | "%{!static:%{!static-libgcc:" | |
1447 | #if USE_LD_AS_NEEDED | |
1448 | "%{!shared-libgcc:", | |
1449 | static_name, " " LD_AS_NEEDED_OPTION " ", | |
1450 | shared_name, " " LD_NO_AS_NEEDED_OPTION | |
1451 | "}" | |
1452 | "%{shared-libgcc:", | |
1453 | shared_name, "%{!shared: ", static_name, "}" | |
1454 | "}" | |
1455 | #else | |
1456 | "%{!shared:" | |
1457 | "%{!shared-libgcc:", static_name, " ", eh_name, "}" | |
1458 | "%{shared-libgcc:", shared_name, " ", static_name, "}" | |
1459 | "}" | |
1460 | #ifdef LINK_EH_SPEC | |
1461 | "%{shared:" | |
1462 | "%{shared-libgcc:", shared_name, "}" | |
1463 | "%{!shared-libgcc:", static_name, "}" | |
1464 | "}" | |
1465 | #else | |
1466 | "%{shared:", shared_name, "}" | |
1467 | #endif | |
1468 | #endif | |
1469 | "}}", NULL); | |
1470 | ||
1471 | obstack_grow (obstack, buf, strlen (buf)); | |
1472 | free (buf); | |
1473 | } | |
1474 | #endif /* ENABLE_SHARED_LIBGCC */ | |
1475 | ||
1476 | /* Initialize the specs lookup routines. */ | |
1477 | ||
1478 | static void | |
1479 | init_spec (void) | |
1480 | { | |
1481 | struct spec_list *next = (struct spec_list *) 0; | |
1482 | struct spec_list *sl = (struct spec_list *) 0; | |
1483 | int i; | |
1484 | ||
1485 | if (specs) | |
1486 | return; /* Already initialized. */ | |
1487 | ||
1488 | if (verbose_flag) | |
1489 | fnotice (stderr, "Using built-in specs.\n"); | |
1490 | ||
1491 | #ifdef EXTRA_SPECS | |
1492 | extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1)); | |
1493 | ||
1494 | for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) | |
1495 | { | |
1496 | sl = &extra_specs[i]; | |
1497 | sl->name = extra_specs_1[i].name; | |
1498 | sl->ptr = extra_specs_1[i].ptr; | |
1499 | sl->next = next; | |
1500 | sl->name_len = strlen (sl->name); | |
1501 | sl->ptr_spec = &sl->ptr; | |
1502 | next = sl; | |
1503 | } | |
1504 | #endif | |
1505 | ||
1506 | for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) | |
1507 | { | |
1508 | sl = &static_specs[i]; | |
1509 | sl->next = next; | |
1510 | next = sl; | |
1511 | } | |
1512 | ||
1513 | #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) | |
1514 | /* ??? If neither -shared-libgcc nor --static-libgcc was | |
1515 | seen, then we should be making an educated guess. Some proposed | |
1516 | heuristics for ELF include: | |
1517 | ||
1518 | (1) If "-Wl,--export-dynamic", then it's a fair bet that the | |
1519 | program will be doing dynamic loading, which will likely | |
1520 | need the shared libgcc. | |
1521 | ||
1522 | (2) If "-ldl", then it's also a fair bet that we're doing | |
1523 | dynamic loading. | |
1524 | ||
1525 | (3) For each ET_DYN we're linking against (either through -lfoo | |
1526 | or /some/path/foo.so), check to see whether it or one of | |
1527 | its dependencies depends on a shared libgcc. | |
1528 | ||
1529 | (4) If "-shared" | |
1530 | ||
1531 | If the runtime is fixed to look for program headers instead | |
1532 | of calling __register_frame_info at all, for each object, | |
1533 | use the shared libgcc if any EH symbol referenced. | |
1534 | ||
1535 | If crtstuff is fixed to not invoke __register_frame_info | |
1536 | automatically, for each object, use the shared libgcc if | |
1537 | any non-empty unwind section found. | |
1538 | ||
1539 | Doing any of this probably requires invoking an external program to | |
1540 | do the actual object file scanning. */ | |
1541 | { | |
1542 | const char *p = libgcc_spec; | |
1543 | int in_sep = 1; | |
1544 | ||
1545 | /* Transform the extant libgcc_spec into one that uses the shared libgcc | |
1546 | when given the proper command line arguments. */ | |
1547 | while (*p) | |
1548 | { | |
1549 | if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0) | |
1550 | { | |
1551 | init_gcc_specs (&obstack, | |
1552 | "-lgcc_s" | |
1553 | #ifdef USE_LIBUNWIND_EXCEPTIONS | |
1554 | " -lunwind" | |
1555 | #endif | |
1556 | , | |
1557 | "-lgcc", | |
1558 | "-lgcc_eh" | |
1559 | #ifdef USE_LIBUNWIND_EXCEPTIONS | |
1560 | # ifdef HAVE_LD_STATIC_DYNAMIC | |
1561 | " %{!static:" LD_STATIC_OPTION "} -lunwind" | |
1562 | " %{!static:" LD_DYNAMIC_OPTION "}" | |
1563 | # else | |
1564 | " -lunwind" | |
1565 | # endif | |
1566 | #endif | |
1567 | ); | |
1568 | ||
1569 | p += 5; | |
1570 | in_sep = 0; | |
1571 | } | |
1572 | else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0) | |
1573 | { | |
1574 | /* Ug. We don't know shared library extensions. Hope that | |
1575 | systems that use this form don't do shared libraries. */ | |
1576 | init_gcc_specs (&obstack, | |
1577 | "-lgcc_s", | |
1578 | "libgcc.a%s", | |
1579 | "libgcc_eh.a%s" | |
1580 | #ifdef USE_LIBUNWIND_EXCEPTIONS | |
1581 | " -lunwind" | |
1582 | #endif | |
1583 | ); | |
1584 | p += 10; | |
1585 | in_sep = 0; | |
1586 | } | |
1587 | else | |
1588 | { | |
1589 | obstack_1grow (&obstack, *p); | |
1590 | in_sep = (*p == ' '); | |
1591 | p += 1; | |
1592 | } | |
1593 | } | |
1594 | ||
1595 | obstack_1grow (&obstack, '\0'); | |
1596 | libgcc_spec = XOBFINISH (&obstack, const char *); | |
1597 | } | |
1598 | #endif | |
1599 | #ifdef USE_AS_TRADITIONAL_FORMAT | |
1600 | /* Prepend "--traditional-format" to whatever asm_spec we had before. */ | |
1601 | { | |
1602 | static const char tf[] = "--traditional-format "; | |
1603 | obstack_grow (&obstack, tf, sizeof (tf) - 1); | |
1604 | obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); | |
1605 | asm_spec = XOBFINISH (&obstack, const char *); | |
1606 | } | |
1607 | #endif | |
1608 | ||
1609 | #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \ | |
1610 | defined LINKER_HASH_STYLE | |
1611 | # ifdef LINK_BUILDID_SPEC | |
1612 | /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */ | |
1613 | obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1); | |
1614 | # endif | |
1615 | # ifdef LINK_EH_SPEC | |
1616 | /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */ | |
1617 | obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1); | |
1618 | # endif | |
1619 | # ifdef LINKER_HASH_STYLE | |
1620 | /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had | |
1621 | before. */ | |
1622 | { | |
1623 | static const char hash_style[] = "--hash-style="; | |
1624 | obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1); | |
1625 | obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1); | |
1626 | obstack_1grow (&obstack, ' '); | |
1627 | } | |
1628 | # endif | |
1629 | obstack_grow0 (&obstack, link_spec, strlen (link_spec)); | |
1630 | link_spec = XOBFINISH (&obstack, const char *); | |
1631 | #endif | |
1632 | ||
1633 | specs = sl; | |
1634 | } | |
1635 | \f | |
1636 | /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is | |
1637 | removed; If the spec starts with a + then SPEC is added to the end of the | |
1638 | current spec. */ | |
1639 | ||
1640 | static void | |
1641 | set_spec (const char *name, const char *spec, bool user_p) | |
1642 | { | |
1643 | struct spec_list *sl; | |
1644 | const char *old_spec; | |
1645 | int name_len = strlen (name); | |
1646 | int i; | |
1647 | ||
1648 | /* If this is the first call, initialize the statically allocated specs. */ | |
1649 | if (!specs) | |
1650 | { | |
1651 | struct spec_list *next = (struct spec_list *) 0; | |
1652 | for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) | |
1653 | { | |
1654 | sl = &static_specs[i]; | |
1655 | sl->next = next; | |
1656 | next = sl; | |
1657 | } | |
1658 | specs = sl; | |
1659 | } | |
1660 | ||
1661 | /* See if the spec already exists. */ | |
1662 | for (sl = specs; sl; sl = sl->next) | |
1663 | if (name_len == sl->name_len && !strcmp (sl->name, name)) | |
1664 | break; | |
1665 | ||
1666 | if (!sl) | |
1667 | { | |
1668 | /* Not found - make it. */ | |
1669 | sl = XNEW (struct spec_list); | |
1670 | sl->name = xstrdup (name); | |
1671 | sl->name_len = name_len; | |
1672 | sl->ptr_spec = &sl->ptr; | |
1673 | sl->alloc_p = 0; | |
1674 | *(sl->ptr_spec) = ""; | |
1675 | sl->next = specs; | |
1676 | specs = sl; | |
1677 | } | |
1678 | ||
1679 | old_spec = *(sl->ptr_spec); | |
1680 | *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) | |
1681 | ? concat (old_spec, spec + 1, NULL) | |
1682 | : xstrdup (spec)); | |
1683 | ||
1684 | #ifdef DEBUG_SPECS | |
1685 | if (verbose_flag) | |
1686 | fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec)); | |
1687 | #endif | |
1688 | ||
1689 | /* Free the old spec. */ | |
1690 | if (old_spec && sl->alloc_p) | |
1691 | free (CONST_CAST (char *, old_spec)); | |
1692 | ||
1693 | sl->user_p = user_p; | |
1694 | sl->alloc_p = true; | |
1695 | } | |
1696 | \f | |
1697 | /* Accumulate a command (program name and args), and run it. */ | |
1698 | ||
1699 | typedef const char *const_char_p; /* For DEF_VEC_P. */ | |
1700 | ||
1701 | /* Vector of pointers to arguments in the current line of specifications. */ | |
1702 | ||
1703 | static vec<const_char_p> argbuf; | |
1704 | ||
1705 | /* Were the options -c, -S or -E passed. */ | |
1706 | static int have_c = 0; | |
1707 | ||
1708 | /* Was the option -o passed. */ | |
1709 | static int have_o = 0; | |
1710 | ||
1711 | /* Pointer to output file name passed in with -o. */ | |
1712 | static const char *output_file = 0; | |
1713 | ||
1714 | /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated | |
1715 | temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for | |
1716 | it here. */ | |
1717 | ||
1718 | static struct temp_name { | |
1719 | const char *suffix; /* suffix associated with the code. */ | |
1720 | int length; /* strlen (suffix). */ | |
1721 | int unique; /* Indicates whether %g or %u/%U was used. */ | |
1722 | const char *filename; /* associated filename. */ | |
1723 | int filename_length; /* strlen (filename). */ | |
1724 | struct temp_name *next; | |
1725 | } *temp_names; | |
1726 | ||
1727 | /* Number of commands executed so far. */ | |
1728 | ||
1729 | static int execution_count; | |
1730 | ||
1731 | /* Number of commands that exited with a signal. */ | |
1732 | ||
1733 | static int signal_count; | |
1734 | \f | |
1735 | /* Allocate the argument vector. */ | |
1736 | ||
1737 | static void | |
1738 | alloc_args (void) | |
1739 | { | |
1740 | argbuf.create (10); | |
1741 | } | |
1742 | ||
1743 | /* Clear out the vector of arguments (after a command is executed). */ | |
1744 | ||
1745 | static void | |
1746 | clear_args (void) | |
1747 | { | |
1748 | argbuf.truncate (0); | |
1749 | } | |
1750 | ||
1751 | /* Add one argument to the vector at the end. | |
1752 | This is done when a space is seen or at the end of the line. | |
1753 | If DELETE_ALWAYS is nonzero, the arg is a filename | |
1754 | and the file should be deleted eventually. | |
1755 | If DELETE_FAILURE is nonzero, the arg is a filename | |
1756 | and the file should be deleted if this compilation fails. */ | |
1757 | ||
1758 | static void | |
1759 | store_arg (const char *arg, int delete_always, int delete_failure) | |
1760 | { | |
1761 | argbuf.safe_push (arg); | |
1762 | ||
1763 | if (delete_always || delete_failure) | |
1764 | { | |
1765 | const char *p; | |
1766 | /* If the temporary file we should delete is specified as | |
1767 | part of a joined argument extract the filename. */ | |
1768 | if (arg[0] == '-' | |
1769 | && (p = strrchr (arg, '='))) | |
1770 | arg = p + 1; | |
1771 | record_temp_file (arg, delete_always, delete_failure); | |
1772 | } | |
1773 | } | |
1774 | \f | |
1775 | /* Load specs from a file name named FILENAME, replacing occurrences of | |
1776 | various different types of line-endings, \r\n, \n\r and just \r, with | |
1777 | a single \n. */ | |
1778 | ||
1779 | static char * | |
1780 | load_specs (const char *filename) | |
1781 | { | |
1782 | int desc; | |
1783 | int readlen; | |
1784 | struct stat statbuf; | |
1785 | char *buffer; | |
1786 | char *buffer_p; | |
1787 | char *specs; | |
1788 | char *specs_p; | |
1789 | ||
1790 | if (verbose_flag) | |
1791 | fnotice (stderr, "Reading specs from %s\n", filename); | |
1792 | ||
1793 | /* Open and stat the file. */ | |
1794 | desc = open (filename, O_RDONLY, 0); | |
1795 | if (desc < 0) | |
1796 | pfatal_with_name (filename); | |
1797 | if (stat (filename, &statbuf) < 0) | |
1798 | pfatal_with_name (filename); | |
1799 | ||
1800 | /* Read contents of file into BUFFER. */ | |
1801 | buffer = XNEWVEC (char, statbuf.st_size + 1); | |
1802 | readlen = read (desc, buffer, (unsigned) statbuf.st_size); | |
1803 | if (readlen < 0) | |
1804 | pfatal_with_name (filename); | |
1805 | buffer[readlen] = 0; | |
1806 | close (desc); | |
1807 | ||
1808 | specs = XNEWVEC (char, readlen + 1); | |
1809 | specs_p = specs; | |
1810 | for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) | |
1811 | { | |
1812 | int skip = 0; | |
1813 | char c = *buffer_p; | |
1814 | if (c == '\r') | |
1815 | { | |
1816 | if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ | |
1817 | skip = 1; | |
1818 | else if (*(buffer_p + 1) == '\n') /* \r\n */ | |
1819 | skip = 1; | |
1820 | else /* \r */ | |
1821 | c = '\n'; | |
1822 | } | |
1823 | if (! skip) | |
1824 | *specs_p++ = c; | |
1825 | } | |
1826 | *specs_p = '\0'; | |
1827 | ||
1828 | free (buffer); | |
1829 | return (specs); | |
1830 | } | |
1831 | ||
1832 | /* Read compilation specs from a file named FILENAME, | |
1833 | replacing the default ones. | |
1834 | ||
1835 | A suffix which starts with `*' is a definition for | |
1836 | one of the machine-specific sub-specs. The "suffix" should be | |
1837 | *asm, *cc1, *cpp, *link, *startfile, etc. | |
1838 | The corresponding spec is stored in asm_spec, etc., | |
1839 | rather than in the `compilers' vector. | |
1840 | ||
1841 | Anything invalid in the file is a fatal error. */ | |
1842 | ||
1843 | static void | |
1844 | read_specs (const char *filename, bool main_p, bool user_p) | |
1845 | { | |
1846 | char *buffer; | |
1847 | char *p; | |
1848 | ||
1849 | buffer = load_specs (filename); | |
1850 | ||
1851 | /* Scan BUFFER for specs, putting them in the vector. */ | |
1852 | p = buffer; | |
1853 | while (1) | |
1854 | { | |
1855 | char *suffix; | |
1856 | char *spec; | |
1857 | char *in, *out, *p1, *p2, *p3; | |
1858 | ||
1859 | /* Advance P in BUFFER to the next nonblank nocomment line. */ | |
1860 | p = skip_whitespace (p); | |
1861 | if (*p == 0) | |
1862 | break; | |
1863 | ||
1864 | /* Is this a special command that starts with '%'? */ | |
1865 | /* Don't allow this for the main specs file, since it would | |
1866 | encourage people to overwrite it. */ | |
1867 | if (*p == '%' && !main_p) | |
1868 | { | |
1869 | p1 = p; | |
1870 | while (*p && *p != '\n') | |
1871 | p++; | |
1872 | ||
1873 | /* Skip '\n'. */ | |
1874 | p++; | |
1875 | ||
1876 | if (!strncmp (p1, "%include", sizeof ("%include") - 1) | |
1877 | && (p1[sizeof "%include" - 1] == ' ' | |
1878 | || p1[sizeof "%include" - 1] == '\t')) | |
1879 | { | |
1880 | char *new_filename; | |
1881 | ||
1882 | p1 += sizeof ("%include"); | |
1883 | while (*p1 == ' ' || *p1 == '\t') | |
1884 | p1++; | |
1885 | ||
1886 | if (*p1++ != '<' || p[-2] != '>') | |
1887 | fatal_error ("specs %%include syntax malformed after " | |
1888 | "%ld characters", | |
1889 | (long) (p1 - buffer + 1)); | |
1890 | ||
1891 | p[-2] = '\0'; | |
1892 | new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); | |
1893 | read_specs (new_filename ? new_filename : p1, false, user_p); | |
1894 | continue; | |
1895 | } | |
1896 | else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1) | |
1897 | && (p1[sizeof "%include_noerr" - 1] == ' ' | |
1898 | || p1[sizeof "%include_noerr" - 1] == '\t')) | |
1899 | { | |
1900 | char *new_filename; | |
1901 | ||
1902 | p1 += sizeof "%include_noerr"; | |
1903 | while (*p1 == ' ' || *p1 == '\t') | |
1904 | p1++; | |
1905 | ||
1906 | if (*p1++ != '<' || p[-2] != '>') | |
1907 | fatal_error ("specs %%include syntax malformed after " | |
1908 | "%ld characters", | |
1909 | (long) (p1 - buffer + 1)); | |
1910 | ||
1911 | p[-2] = '\0'; | |
1912 | new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); | |
1913 | if (new_filename) | |
1914 | read_specs (new_filename, false, user_p); | |
1915 | else if (verbose_flag) | |
1916 | fnotice (stderr, "could not find specs file %s\n", p1); | |
1917 | continue; | |
1918 | } | |
1919 | else if (!strncmp (p1, "%rename", sizeof "%rename" - 1) | |
1920 | && (p1[sizeof "%rename" - 1] == ' ' | |
1921 | || p1[sizeof "%rename" - 1] == '\t')) | |
1922 | { | |
1923 | int name_len; | |
1924 | struct spec_list *sl; | |
1925 | struct spec_list *newsl; | |
1926 | ||
1927 | /* Get original name. */ | |
1928 | p1 += sizeof "%rename"; | |
1929 | while (*p1 == ' ' || *p1 == '\t') | |
1930 | p1++; | |
1931 | ||
1932 | if (! ISALPHA ((unsigned char) *p1)) | |
1933 | fatal_error ("specs %%rename syntax malformed after " | |
1934 | "%ld characters", | |
1935 | (long) (p1 - buffer)); | |
1936 | ||
1937 | p2 = p1; | |
1938 | while (*p2 && !ISSPACE ((unsigned char) *p2)) | |
1939 | p2++; | |
1940 | ||
1941 | if (*p2 != ' ' && *p2 != '\t') | |
1942 | fatal_error ("specs %%rename syntax malformed after " | |
1943 | "%ld characters", | |
1944 | (long) (p2 - buffer)); | |
1945 | ||
1946 | name_len = p2 - p1; | |
1947 | *p2++ = '\0'; | |
1948 | while (*p2 == ' ' || *p2 == '\t') | |
1949 | p2++; | |
1950 | ||
1951 | if (! ISALPHA ((unsigned char) *p2)) | |
1952 | fatal_error ("specs %%rename syntax malformed after " | |
1953 | "%ld characters", | |
1954 | (long) (p2 - buffer)); | |
1955 | ||
1956 | /* Get new spec name. */ | |
1957 | p3 = p2; | |
1958 | while (*p3 && !ISSPACE ((unsigned char) *p3)) | |
1959 | p3++; | |
1960 | ||
1961 | if (p3 != p - 1) | |
1962 | fatal_error ("specs %%rename syntax malformed after " | |
1963 | "%ld characters", | |
1964 | (long) (p3 - buffer)); | |
1965 | *p3 = '\0'; | |
1966 | ||
1967 | for (sl = specs; sl; sl = sl->next) | |
1968 | if (name_len == sl->name_len && !strcmp (sl->name, p1)) | |
1969 | break; | |
1970 | ||
1971 | if (!sl) | |
1972 | fatal_error ("specs %s spec was not found to be renamed", p1); | |
1973 | ||
1974 | if (strcmp (p1, p2) == 0) | |
1975 | continue; | |
1976 | ||
1977 | for (newsl = specs; newsl; newsl = newsl->next) | |
1978 | if (strcmp (newsl->name, p2) == 0) | |
1979 | fatal_error ("%s: attempt to rename spec %qs to " | |
1980 | "already defined spec %qs", | |
1981 | filename, p1, p2); | |
1982 | ||
1983 | if (verbose_flag) | |
1984 | { | |
1985 | fnotice (stderr, "rename spec %s to %s\n", p1, p2); | |
1986 | #ifdef DEBUG_SPECS | |
1987 | fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec)); | |
1988 | #endif | |
1989 | } | |
1990 | ||
1991 | set_spec (p2, *(sl->ptr_spec), user_p); | |
1992 | if (sl->alloc_p) | |
1993 | free (CONST_CAST (char *, *(sl->ptr_spec))); | |
1994 | ||
1995 | *(sl->ptr_spec) = ""; | |
1996 | sl->alloc_p = 0; | |
1997 | continue; | |
1998 | } | |
1999 | else | |
2000 | fatal_error ("specs unknown %% command after %ld characters", | |
2001 | (long) (p1 - buffer)); | |
2002 | } | |
2003 | ||
2004 | /* Find the colon that should end the suffix. */ | |
2005 | p1 = p; | |
2006 | while (*p1 && *p1 != ':' && *p1 != '\n') | |
2007 | p1++; | |
2008 | ||
2009 | /* The colon shouldn't be missing. */ | |
2010 | if (*p1 != ':') | |
2011 | fatal_error ("specs file malformed after %ld characters", | |
2012 | (long) (p1 - buffer)); | |
2013 | ||
2014 | /* Skip back over trailing whitespace. */ | |
2015 | p2 = p1; | |
2016 | while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) | |
2017 | p2--; | |
2018 | ||
2019 | /* Copy the suffix to a string. */ | |
2020 | suffix = save_string (p, p2 - p); | |
2021 | /* Find the next line. */ | |
2022 | p = skip_whitespace (p1 + 1); | |
2023 | if (p[1] == 0) | |
2024 | fatal_error ("specs file malformed after %ld characters", | |
2025 | (long) (p - buffer)); | |
2026 | ||
2027 | p1 = p; | |
2028 | /* Find next blank line or end of string. */ | |
2029 | while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) | |
2030 | p1++; | |
2031 | ||
2032 | /* Specs end at the blank line and do not include the newline. */ | |
2033 | spec = save_string (p, p1 - p); | |
2034 | p = p1; | |
2035 | ||
2036 | /* Delete backslash-newline sequences from the spec. */ | |
2037 | in = spec; | |
2038 | out = spec; | |
2039 | while (*in != 0) | |
2040 | { | |
2041 | if (in[0] == '\\' && in[1] == '\n') | |
2042 | in += 2; | |
2043 | else if (in[0] == '#') | |
2044 | while (*in && *in != '\n') | |
2045 | in++; | |
2046 | ||
2047 | else | |
2048 | *out++ = *in++; | |
2049 | } | |
2050 | *out = 0; | |
2051 | ||
2052 | if (suffix[0] == '*') | |
2053 | { | |
2054 | if (! strcmp (suffix, "*link_command")) | |
2055 | link_command_spec = spec; | |
2056 | else | |
2057 | set_spec (suffix + 1, spec, user_p); | |
2058 | } | |
2059 | else | |
2060 | { | |
2061 | /* Add this pair to the vector. */ | |
2062 | compilers | |
2063 | = XRESIZEVEC (struct compiler, compilers, n_compilers + 2); | |
2064 | ||
2065 | compilers[n_compilers].suffix = suffix; | |
2066 | compilers[n_compilers].spec = spec; | |
2067 | n_compilers++; | |
2068 | memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]); | |
2069 | } | |
2070 | ||
2071 | if (*suffix == 0) | |
2072 | link_command_spec = spec; | |
2073 | } | |
2074 | ||
2075 | if (link_command_spec == 0) | |
2076 | fatal_error ("spec file has no spec for linking"); | |
2077 | } | |
2078 | \f | |
2079 | /* Record the names of temporary files we tell compilers to write, | |
2080 | and delete them at the end of the run. */ | |
2081 | ||
2082 | /* This is the common prefix we use to make temp file names. | |
2083 | It is chosen once for each run of this program. | |
2084 | It is substituted into a spec by %g or %j. | |
2085 | Thus, all temp file names contain this prefix. | |
2086 | In practice, all temp file names start with this prefix. | |
2087 | ||
2088 | This prefix comes from the envvar TMPDIR if it is defined; | |
2089 | otherwise, from the P_tmpdir macro if that is defined; | |
2090 | otherwise, in /usr/tmp or /tmp; | |
2091 | or finally the current directory if all else fails. */ | |
2092 | ||
2093 | static const char *temp_filename; | |
2094 | ||
2095 | /* Length of the prefix. */ | |
2096 | ||
2097 | static int temp_filename_length; | |
2098 | ||
2099 | /* Define the list of temporary files to delete. */ | |
2100 | ||
2101 | struct temp_file | |
2102 | { | |
2103 | const char *name; | |
2104 | struct temp_file *next; | |
2105 | }; | |
2106 | ||
2107 | /* Queue of files to delete on success or failure of compilation. */ | |
2108 | static struct temp_file *always_delete_queue; | |
2109 | /* Queue of files to delete on failure of compilation. */ | |
2110 | static struct temp_file *failure_delete_queue; | |
2111 | ||
2112 | /* Record FILENAME as a file to be deleted automatically. | |
2113 | ALWAYS_DELETE nonzero means delete it if all compilation succeeds; | |
2114 | otherwise delete it in any case. | |
2115 | FAIL_DELETE nonzero means delete it if a compilation step fails; | |
2116 | otherwise delete it in any case. */ | |
2117 | ||
2118 | void | |
2119 | record_temp_file (const char *filename, int always_delete, int fail_delete) | |
2120 | { | |
2121 | char *const name = xstrdup (filename); | |
2122 | ||
2123 | if (always_delete) | |
2124 | { | |
2125 | struct temp_file *temp; | |
2126 | for (temp = always_delete_queue; temp; temp = temp->next) | |
2127 | if (! filename_cmp (name, temp->name)) | |
2128 | goto already1; | |
2129 | ||
2130 | temp = XNEW (struct temp_file); | |
2131 | temp->next = always_delete_queue; | |
2132 | temp->name = name; | |
2133 | always_delete_queue = temp; | |
2134 | ||
2135 | already1:; | |
2136 | } | |
2137 | ||
2138 | if (fail_delete) | |
2139 | { | |
2140 | struct temp_file *temp; | |
2141 | for (temp = failure_delete_queue; temp; temp = temp->next) | |
2142 | if (! filename_cmp (name, temp->name)) | |
2143 | { | |
2144 | free (name); | |
2145 | goto already2; | |
2146 | } | |
2147 | ||
2148 | temp = XNEW (struct temp_file); | |
2149 | temp->next = failure_delete_queue; | |
2150 | temp->name = name; | |
2151 | failure_delete_queue = temp; | |
2152 | ||
2153 | already2:; | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | /* Delete all the temporary files whose names we previously recorded. */ | |
2158 | ||
2159 | #ifndef DELETE_IF_ORDINARY | |
2160 | #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \ | |
2161 | do \ | |
2162 | { \ | |
2163 | if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \ | |
2164 | if (unlink (NAME) < 0) \ | |
2165 | if (VERBOSE_FLAG) \ | |
2166 | perror_with_name (NAME); \ | |
2167 | } while (0) | |
2168 | #endif | |
2169 | ||
2170 | static void | |
2171 | delete_if_ordinary (const char *name) | |
2172 | { | |
2173 | struct stat st; | |
2174 | #ifdef DEBUG | |
2175 | int i, c; | |
2176 | ||
2177 | printf ("Delete %s? (y or n) ", name); | |
2178 | fflush (stdout); | |
2179 | i = getchar (); | |
2180 | if (i != '\n') | |
2181 | while ((c = getchar ()) != '\n' && c != EOF) | |
2182 | ; | |
2183 | ||
2184 | if (i == 'y' || i == 'Y') | |
2185 | #endif /* DEBUG */ | |
2186 | DELETE_IF_ORDINARY (name, st, verbose_flag); | |
2187 | } | |
2188 | ||
2189 | static void | |
2190 | delete_temp_files (void) | |
2191 | { | |
2192 | struct temp_file *temp; | |
2193 | ||
2194 | for (temp = always_delete_queue; temp; temp = temp->next) | |
2195 | delete_if_ordinary (temp->name); | |
2196 | always_delete_queue = 0; | |
2197 | } | |
2198 | ||
2199 | /* Delete all the files to be deleted on error. */ | |
2200 | ||
2201 | static void | |
2202 | delete_failure_queue (void) | |
2203 | { | |
2204 | struct temp_file *temp; | |
2205 | ||
2206 | for (temp = failure_delete_queue; temp; temp = temp->next) | |
2207 | delete_if_ordinary (temp->name); | |
2208 | } | |
2209 | ||
2210 | static void | |
2211 | clear_failure_queue (void) | |
2212 | { | |
2213 | failure_delete_queue = 0; | |
2214 | } | |
2215 | \f | |
2216 | /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK | |
2217 | returns non-NULL. | |
2218 | If DO_MULTI is true iterate over the paths twice, first with multilib | |
2219 | suffix then without, otherwise iterate over the paths once without | |
2220 | adding a multilib suffix. When DO_MULTI is true, some attempt is made | |
2221 | to avoid visiting the same path twice, but we could do better. For | |
2222 | instance, /usr/lib/../lib is considered different from /usr/lib. | |
2223 | At least EXTRA_SPACE chars past the end of the path passed to | |
2224 | CALLBACK are available for use by the callback. | |
2225 | CALLBACK_INFO allows extra parameters to be passed to CALLBACK. | |
2226 | ||
2227 | Returns the value returned by CALLBACK. */ | |
2228 | ||
2229 | static void * | |
2230 | for_each_path (const struct path_prefix *paths, | |
2231 | bool do_multi, | |
2232 | size_t extra_space, | |
2233 | void *(*callback) (char *, void *), | |
2234 | void *callback_info) | |
2235 | { | |
2236 | struct prefix_list *pl; | |
2237 | const char *multi_dir = NULL; | |
2238 | const char *multi_os_dir = NULL; | |
2239 | const char *multiarch_suffix = NULL; | |
2240 | const char *multi_suffix; | |
2241 | const char *just_multi_suffix; | |
2242 | char *path = NULL; | |
2243 | void *ret = NULL; | |
2244 | bool skip_multi_dir = false; | |
2245 | bool skip_multi_os_dir = false; | |
2246 | ||
2247 | multi_suffix = machine_suffix; | |
2248 | just_multi_suffix = just_machine_suffix; | |
2249 | if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0) | |
2250 | { | |
2251 | multi_dir = concat (multilib_dir, dir_separator_str, NULL); | |
2252 | multi_suffix = concat (multi_suffix, multi_dir, NULL); | |
2253 | just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL); | |
2254 | } | |
2255 | if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0) | |
2256 | multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL); | |
2257 | if (multiarch_dir) | |
2258 | multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL); | |
2259 | ||
2260 | while (1) | |
2261 | { | |
2262 | size_t multi_dir_len = 0; | |
2263 | size_t multi_os_dir_len = 0; | |
2264 | size_t multiarch_len = 0; | |
2265 | size_t suffix_len; | |
2266 | size_t just_suffix_len; | |
2267 | size_t len; | |
2268 | ||
2269 | if (multi_dir) | |
2270 | multi_dir_len = strlen (multi_dir); | |
2271 | if (multi_os_dir) | |
2272 | multi_os_dir_len = strlen (multi_os_dir); | |
2273 | if (multiarch_suffix) | |
2274 | multiarch_len = strlen (multiarch_suffix); | |
2275 | suffix_len = strlen (multi_suffix); | |
2276 | just_suffix_len = strlen (just_multi_suffix); | |
2277 | ||
2278 | if (path == NULL) | |
2279 | { | |
2280 | len = paths->max_len + extra_space + 1; | |
2281 | len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len); | |
2282 | path = XNEWVEC (char, len); | |
2283 | } | |
2284 | ||
2285 | for (pl = paths->plist; pl != 0; pl = pl->next) | |
2286 | { | |
2287 | len = strlen (pl->prefix); | |
2288 | memcpy (path, pl->prefix, len); | |
2289 | ||
2290 | /* Look first in MACHINE/VERSION subdirectory. */ | |
2291 | if (!skip_multi_dir) | |
2292 | { | |
2293 | memcpy (path + len, multi_suffix, suffix_len + 1); | |
2294 | ret = callback (path, callback_info); | |
2295 | if (ret) | |
2296 | break; | |
2297 | } | |
2298 | ||
2299 | /* Some paths are tried with just the machine (ie. target) | |
2300 | subdir. This is used for finding as, ld, etc. */ | |
2301 | if (!skip_multi_dir | |
2302 | && pl->require_machine_suffix == 2) | |
2303 | { | |
2304 | memcpy (path + len, just_multi_suffix, just_suffix_len + 1); | |
2305 | ret = callback (path, callback_info); | |
2306 | if (ret) | |
2307 | break; | |
2308 | } | |
2309 | ||
2310 | /* Now try the multiarch path. */ | |
2311 | if (!skip_multi_dir | |
2312 | && !pl->require_machine_suffix && multiarch_dir) | |
2313 | { | |
2314 | memcpy (path + len, multiarch_suffix, multiarch_len + 1); | |
2315 | ret = callback (path, callback_info); | |
2316 | if (ret) | |
2317 | break; | |
2318 | } | |
2319 | ||
2320 | /* Now try the base path. */ | |
2321 | if (!pl->require_machine_suffix | |
2322 | && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir)) | |
2323 | { | |
2324 | const char *this_multi; | |
2325 | size_t this_multi_len; | |
2326 | ||
2327 | if (pl->os_multilib) | |
2328 | { | |
2329 | this_multi = multi_os_dir; | |
2330 | this_multi_len = multi_os_dir_len; | |
2331 | } | |
2332 | else | |
2333 | { | |
2334 | this_multi = multi_dir; | |
2335 | this_multi_len = multi_dir_len; | |
2336 | } | |
2337 | ||
2338 | if (this_multi_len) | |
2339 | memcpy (path + len, this_multi, this_multi_len + 1); | |
2340 | else | |
2341 | path[len] = '\0'; | |
2342 | ||
2343 | ret = callback (path, callback_info); | |
2344 | if (ret) | |
2345 | break; | |
2346 | } | |
2347 | } | |
2348 | if (pl) | |
2349 | break; | |
2350 | ||
2351 | if (multi_dir == NULL && multi_os_dir == NULL) | |
2352 | break; | |
2353 | ||
2354 | /* Run through the paths again, this time without multilibs. | |
2355 | Don't repeat any we have already seen. */ | |
2356 | if (multi_dir) | |
2357 | { | |
2358 | free (CONST_CAST (char *, multi_dir)); | |
2359 | multi_dir = NULL; | |
2360 | free (CONST_CAST (char *, multi_suffix)); | |
2361 | multi_suffix = machine_suffix; | |
2362 | free (CONST_CAST (char *, just_multi_suffix)); | |
2363 | just_multi_suffix = just_machine_suffix; | |
2364 | } | |
2365 | else | |
2366 | skip_multi_dir = true; | |
2367 | if (multi_os_dir) | |
2368 | { | |
2369 | free (CONST_CAST (char *, multi_os_dir)); | |
2370 | multi_os_dir = NULL; | |
2371 | } | |
2372 | else | |
2373 | skip_multi_os_dir = true; | |
2374 | } | |
2375 | ||
2376 | if (multi_dir) | |
2377 | { | |
2378 | free (CONST_CAST (char *, multi_dir)); | |
2379 | free (CONST_CAST (char *, multi_suffix)); | |
2380 | free (CONST_CAST (char *, just_multi_suffix)); | |
2381 | } | |
2382 | if (multi_os_dir) | |
2383 | free (CONST_CAST (char *, multi_os_dir)); | |
2384 | if (ret != path) | |
2385 | free (path); | |
2386 | return ret; | |
2387 | } | |
2388 | ||
2389 | /* Callback for build_search_list. Adds path to obstack being built. */ | |
2390 | ||
2391 | struct add_to_obstack_info { | |
2392 | struct obstack *ob; | |
2393 | bool check_dir; | |
2394 | bool first_time; | |
2395 | }; | |
2396 | ||
2397 | static void * | |
2398 | add_to_obstack (char *path, void *data) | |
2399 | { | |
2400 | struct add_to_obstack_info *info = (struct add_to_obstack_info *) data; | |
2401 | ||
2402 | if (info->check_dir && !is_directory (path, false)) | |
2403 | return NULL; | |
2404 | ||
2405 | if (!info->first_time) | |
2406 | obstack_1grow (info->ob, PATH_SEPARATOR); | |
2407 | ||
2408 | obstack_grow (info->ob, path, strlen (path)); | |
2409 | ||
2410 | info->first_time = false; | |
2411 | return NULL; | |
2412 | } | |
2413 | ||
2414 | /* Add or change the value of an environment variable, outputting the | |
2415 | change to standard error if in verbose mode. */ | |
2416 | static void | |
2417 | xputenv (const char *string) | |
2418 | { | |
2419 | if (verbose_flag) | |
2420 | fnotice (stderr, "%s\n", string); | |
2421 | putenv (CONST_CAST (char *, string)); | |
2422 | } | |
2423 | ||
2424 | /* Build a list of search directories from PATHS. | |
2425 | PREFIX is a string to prepend to the list. | |
2426 | If CHECK_DIR_P is true we ensure the directory exists. | |
2427 | If DO_MULTI is true, multilib paths are output first, then | |
2428 | non-multilib paths. | |
2429 | This is used mostly by putenv_from_prefixes so we use `collect_obstack'. | |
2430 | It is also used by the --print-search-dirs flag. */ | |
2431 | ||
2432 | static char * | |
2433 | build_search_list (const struct path_prefix *paths, const char *prefix, | |
2434 | bool check_dir, bool do_multi) | |
2435 | { | |
2436 | struct add_to_obstack_info info; | |
2437 | ||
2438 | info.ob = &collect_obstack; | |
2439 | info.check_dir = check_dir; | |
2440 | info.first_time = true; | |
2441 | ||
2442 | obstack_grow (&collect_obstack, prefix, strlen (prefix)); | |
2443 | obstack_1grow (&collect_obstack, '='); | |
2444 | ||
2445 | for_each_path (paths, do_multi, 0, add_to_obstack, &info); | |
2446 | ||
2447 | obstack_1grow (&collect_obstack, '\0'); | |
2448 | return XOBFINISH (&collect_obstack, char *); | |
2449 | } | |
2450 | ||
2451 | /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables | |
2452 | for collect. */ | |
2453 | ||
2454 | static void | |
2455 | putenv_from_prefixes (const struct path_prefix *paths, const char *env_var, | |
2456 | bool do_multi) | |
2457 | { | |
2458 | xputenv (build_search_list (paths, env_var, true, do_multi)); | |
2459 | } | |
2460 | \f | |
2461 | /* Check whether NAME can be accessed in MODE. This is like access, | |
2462 | except that it never considers directories to be executable. */ | |
2463 | ||
2464 | static int | |
2465 | access_check (const char *name, int mode) | |
2466 | { | |
2467 | if (mode == X_OK) | |
2468 | { | |
2469 | struct stat st; | |
2470 | ||
2471 | if (stat (name, &st) < 0 | |
2472 | || S_ISDIR (st.st_mode)) | |
2473 | return -1; | |
2474 | } | |
2475 | ||
2476 | return access (name, mode); | |
2477 | } | |
2478 | ||
2479 | /* Callback for find_a_file. Appends the file name to the directory | |
2480 | path. If the resulting file exists in the right mode, return the | |
2481 | full pathname to the file. */ | |
2482 | ||
2483 | struct file_at_path_info { | |
2484 | const char *name; | |
2485 | const char *suffix; | |
2486 | int name_len; | |
2487 | int suffix_len; | |
2488 | int mode; | |
2489 | }; | |
2490 | ||
2491 | static void * | |
2492 | file_at_path (char *path, void *data) | |
2493 | { | |
2494 | struct file_at_path_info *info = (struct file_at_path_info *) data; | |
2495 | size_t len = strlen (path); | |
2496 | ||
2497 | memcpy (path + len, info->name, info->name_len); | |
2498 | len += info->name_len; | |
2499 | ||
2500 | /* Some systems have a suffix for executable files. | |
2501 | So try appending that first. */ | |
2502 | if (info->suffix_len) | |
2503 | { | |
2504 | memcpy (path + len, info->suffix, info->suffix_len + 1); | |
2505 | if (access_check (path, info->mode) == 0) | |
2506 | return path; | |
2507 | } | |
2508 | ||
2509 | path[len] = '\0'; | |
2510 | if (access_check (path, info->mode) == 0) | |
2511 | return path; | |
2512 | ||
2513 | return NULL; | |
2514 | } | |
2515 | ||
2516 | /* Search for NAME using the prefix list PREFIXES. MODE is passed to | |
2517 | access to check permissions. If DO_MULTI is true, search multilib | |
2518 | paths then non-multilib paths, otherwise do not search multilib paths. | |
2519 | Return 0 if not found, otherwise return its name, allocated with malloc. */ | |
2520 | ||
2521 | static char * | |
2522 | find_a_file (const struct path_prefix *pprefix, const char *name, int mode, | |
2523 | bool do_multi) | |
2524 | { | |
2525 | struct file_at_path_info info; | |
2526 | ||
2527 | #ifdef DEFAULT_ASSEMBLER | |
2528 | if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0) | |
2529 | return xstrdup (DEFAULT_ASSEMBLER); | |
2530 | #endif | |
2531 | ||
2532 | #ifdef DEFAULT_LINKER | |
2533 | if (! strcmp (name, "ld") && access (DEFAULT_LINKER, mode) == 0) | |
2534 | return xstrdup (DEFAULT_LINKER); | |
2535 | #endif | |
2536 | ||
2537 | /* Determine the filename to execute (special case for absolute paths). */ | |
2538 | ||
2539 | if (IS_ABSOLUTE_PATH (name)) | |
2540 | { | |
2541 | if (access (name, mode) == 0) | |
2542 | return xstrdup (name); | |
2543 | ||
2544 | return NULL; | |
2545 | } | |
2546 | ||
2547 | info.name = name; | |
2548 | info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""; | |
2549 | info.name_len = strlen (info.name); | |
2550 | info.suffix_len = strlen (info.suffix); | |
2551 | info.mode = mode; | |
2552 | ||
2553 | return (char*) for_each_path (pprefix, do_multi, | |
2554 | info.name_len + info.suffix_len, | |
2555 | file_at_path, &info); | |
2556 | } | |
2557 | ||
2558 | /* Ranking of prefixes in the sort list. -B prefixes are put before | |
2559 | all others. */ | |
2560 | ||
2561 | enum path_prefix_priority | |
2562 | { | |
2563 | PREFIX_PRIORITY_B_OPT, | |
2564 | PREFIX_PRIORITY_LAST | |
2565 | }; | |
2566 | ||
2567 | /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending | |
2568 | order according to PRIORITY. Within each PRIORITY, new entries are | |
2569 | appended. | |
2570 | ||
2571 | If WARN is nonzero, we will warn if no file is found | |
2572 | through this prefix. WARN should point to an int | |
2573 | which will be set to 1 if this entry is used. | |
2574 | ||
2575 | COMPONENT is the value to be passed to update_path. | |
2576 | ||
2577 | REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without | |
2578 | the complete value of machine_suffix. | |
2579 | 2 means try both machine_suffix and just_machine_suffix. */ | |
2580 | ||
2581 | static void | |
2582 | add_prefix (struct path_prefix *pprefix, const char *prefix, | |
2583 | const char *component, /* enum prefix_priority */ int priority, | |
2584 | int require_machine_suffix, int os_multilib) | |
2585 | { | |
2586 | struct prefix_list *pl, **prev; | |
2587 | int len; | |
2588 | ||
2589 | for (prev = &pprefix->plist; | |
2590 | (*prev) != NULL && (*prev)->priority <= priority; | |
2591 | prev = &(*prev)->next) | |
2592 | ; | |
2593 | ||
2594 | /* Keep track of the longest prefix. */ | |
2595 | ||
2596 | prefix = update_path (prefix, component); | |
2597 | len = strlen (prefix); | |
2598 | if (len > pprefix->max_len) | |
2599 | pprefix->max_len = len; | |
2600 | ||
2601 | pl = XNEW (struct prefix_list); | |
2602 | pl->prefix = prefix; | |
2603 | pl->require_machine_suffix = require_machine_suffix; | |
2604 | pl->priority = priority; | |
2605 | pl->os_multilib = os_multilib; | |
2606 | ||
2607 | /* Insert after PREV. */ | |
2608 | pl->next = (*prev); | |
2609 | (*prev) = pl; | |
2610 | } | |
2611 | ||
2612 | /* Same as add_prefix, but prepending target_system_root to prefix. */ | |
2613 | /* The target_system_root prefix has been relocated by gcc_exec_prefix. */ | |
2614 | static void | |
2615 | add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix, | |
2616 | const char *component, | |
2617 | /* enum prefix_priority */ int priority, | |
2618 | int require_machine_suffix, int os_multilib) | |
2619 | { | |
2620 | if (!IS_ABSOLUTE_PATH (prefix)) | |
2621 | fatal_error ("system path %qs is not absolute", prefix); | |
2622 | ||
2623 | if (target_system_root) | |
2624 | { | |
2625 | char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root); | |
2626 | size_t sysroot_len = strlen (target_system_root); | |
2627 | ||
2628 | if (sysroot_len > 0 | |
2629 | && target_system_root[sysroot_len - 1] == DIR_SEPARATOR) | |
2630 | sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0'; | |
2631 | ||
2632 | if (target_sysroot_suffix) | |
2633 | prefix = concat (sysroot_no_trailing_dir_separator, | |
2634 | target_sysroot_suffix, prefix, NULL); | |
2635 | else | |
2636 | prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL); | |
2637 | ||
2638 | free (sysroot_no_trailing_dir_separator); | |
2639 | ||
2640 | /* We have to override this because GCC's notion of sysroot | |
2641 | moves along with GCC. */ | |
2642 | component = "GCC"; | |
2643 | } | |
2644 | ||
2645 | add_prefix (pprefix, prefix, component, priority, | |
2646 | require_machine_suffix, os_multilib); | |
2647 | } | |
2648 | \f | |
2649 | /* Execute the command specified by the arguments on the current line of spec. | |
2650 | When using pipes, this includes several piped-together commands | |
2651 | with `|' between them. | |
2652 | ||
2653 | Return 0 if successful, -1 if failed. */ | |
2654 | ||
2655 | static int | |
2656 | execute (void) | |
2657 | { | |
2658 | int i; | |
2659 | int n_commands; /* # of command. */ | |
2660 | char *string; | |
2661 | struct pex_obj *pex; | |
2662 | struct command | |
2663 | { | |
2664 | const char *prog; /* program name. */ | |
2665 | const char **argv; /* vector of args. */ | |
2666 | }; | |
2667 | const char *arg; | |
2668 | ||
2669 | struct command *commands; /* each command buffer with above info. */ | |
2670 | ||
2671 | gcc_assert (!processing_spec_function); | |
2672 | ||
2673 | if (wrapper_string) | |
2674 | { | |
2675 | string = find_a_file (&exec_prefixes, | |
2676 | argbuf[0], X_OK, false); | |
2677 | if (string) | |
2678 | argbuf[0] = string; | |
2679 | insert_wrapper (wrapper_string); | |
2680 | } | |
2681 | ||
2682 | /* Count # of piped commands. */ | |
2683 | for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++) | |
2684 | if (strcmp (arg, "|") == 0) | |
2685 | n_commands++; | |
2686 | ||
2687 | /* Get storage for each command. */ | |
2688 | commands = (struct command *) alloca (n_commands * sizeof (struct command)); | |
2689 | ||
2690 | /* Split argbuf into its separate piped processes, | |
2691 | and record info about each one. | |
2692 | Also search for the programs that are to be run. */ | |
2693 | ||
2694 | argbuf.safe_push (0); | |
2695 | ||
2696 | commands[0].prog = argbuf[0]; /* first command. */ | |
2697 | commands[0].argv = argbuf.address (); | |
2698 | ||
2699 | if (!wrapper_string) | |
2700 | { | |
2701 | string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false); | |
2702 | commands[0].argv[0] = (string) ? string : commands[0].argv[0]; | |
2703 | } | |
2704 | ||
2705 | for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++) | |
2706 | if (arg && strcmp (arg, "|") == 0) | |
2707 | { /* each command. */ | |
2708 | #if defined (__MSDOS__) || defined (OS2) || defined (VMS) | |
2709 | fatal_error ("-pipe not supported"); | |
2710 | #endif | |
2711 | argbuf[i] = 0; /* Termination of | |
2712 | command args. */ | |
2713 | commands[n_commands].prog = argbuf[i + 1]; | |
2714 | commands[n_commands].argv | |
2715 | = &(argbuf.address ())[i + 1]; | |
2716 | string = find_a_file (&exec_prefixes, commands[n_commands].prog, | |
2717 | X_OK, false); | |
2718 | if (string) | |
2719 | commands[n_commands].argv[0] = string; | |
2720 | n_commands++; | |
2721 | } | |
2722 | ||
2723 | /* If -v, print what we are about to do, and maybe query. */ | |
2724 | ||
2725 | if (verbose_flag) | |
2726 | { | |
2727 | /* For help listings, put a blank line between sub-processes. */ | |
2728 | if (print_help_list) | |
2729 | fputc ('\n', stderr); | |
2730 | ||
2731 | /* Print each piped command as a separate line. */ | |
2732 | for (i = 0; i < n_commands; i++) | |
2733 | { | |
2734 | const char *const *j; | |
2735 | ||
2736 | if (verbose_only_flag) | |
2737 | { | |
2738 | for (j = commands[i].argv; *j; j++) | |
2739 | { | |
2740 | const char *p; | |
2741 | for (p = *j; *p; ++p) | |
2742 | if (!ISALNUM ((unsigned char) *p) | |
2743 | && *p != '_' && *p != '/' && *p != '-' && *p != '.') | |
2744 | break; | |
2745 | if (*p || !*j) | |
2746 | { | |
2747 | fprintf (stderr, " \""); | |
2748 | for (p = *j; *p; ++p) | |
2749 | { | |
2750 | if (*p == '"' || *p == '\\' || *p == '$') | |
2751 | fputc ('\\', stderr); | |
2752 | fputc (*p, stderr); | |
2753 | } | |
2754 | fputc ('"', stderr); | |
2755 | } | |
2756 | /* If it's empty, print "". */ | |
2757 | else if (!**j) | |
2758 | fprintf (stderr, " \"\""); | |
2759 | else | |
2760 | fprintf (stderr, " %s", *j); | |
2761 | } | |
2762 | } | |
2763 | else | |
2764 | for (j = commands[i].argv; *j; j++) | |
2765 | /* If it's empty, print "". */ | |
2766 | if (!**j) | |
2767 | fprintf (stderr, " \"\""); | |
2768 | else | |
2769 | fprintf (stderr, " %s", *j); | |
2770 | ||
2771 | /* Print a pipe symbol after all but the last command. */ | |
2772 | if (i + 1 != n_commands) | |
2773 | fprintf (stderr, " |"); | |
2774 | fprintf (stderr, "\n"); | |
2775 | } | |
2776 | fflush (stderr); | |
2777 | if (verbose_only_flag != 0) | |
2778 | { | |
2779 | /* verbose_only_flag should act as if the spec was | |
2780 | executed, so increment execution_count before | |
2781 | returning. This prevents spurious warnings about | |
2782 | unused linker input files, etc. */ | |
2783 | execution_count++; | |
2784 | return 0; | |
2785 | } | |
2786 | #ifdef DEBUG | |
2787 | fnotice (stderr, "\nGo ahead? (y or n) "); | |
2788 | fflush (stderr); | |
2789 | i = getchar (); | |
2790 | if (i != '\n') | |
2791 | while (getchar () != '\n') | |
2792 | ; | |
2793 | ||
2794 | if (i != 'y' && i != 'Y') | |
2795 | return 0; | |
2796 | #endif /* DEBUG */ | |
2797 | } | |
2798 | ||
2799 | #ifdef ENABLE_VALGRIND_CHECKING | |
2800 | /* Run the each command through valgrind. To simplify prepending the | |
2801 | path to valgrind and the option "-q" (for quiet operation unless | |
2802 | something triggers), we allocate a separate argv array. */ | |
2803 | ||
2804 | for (i = 0; i < n_commands; i++) | |
2805 | { | |
2806 | const char **argv; | |
2807 | int argc; | |
2808 | int j; | |
2809 | ||
2810 | for (argc = 0; commands[i].argv[argc] != NULL; argc++) | |
2811 | ; | |
2812 | ||
2813 | argv = XALLOCAVEC (const char *, argc + 3); | |
2814 | ||
2815 | argv[0] = VALGRIND_PATH; | |
2816 | argv[1] = "-q"; | |
2817 | for (j = 2; j < argc + 2; j++) | |
2818 | argv[j] = commands[i].argv[j - 2]; | |
2819 | argv[j] = NULL; | |
2820 | ||
2821 | commands[i].argv = argv; | |
2822 | commands[i].prog = argv[0]; | |
2823 | } | |
2824 | #endif | |
2825 | ||
2826 | /* Run each piped subprocess. */ | |
2827 | ||
2828 | pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file) | |
2829 | ? PEX_RECORD_TIMES : 0), | |
2830 | progname, temp_filename); | |
2831 | if (pex == NULL) | |
2832 | fatal_error ("pex_init failed: %m"); | |
2833 | ||
2834 | for (i = 0; i < n_commands; i++) | |
2835 | { | |
2836 | const char *errmsg; | |
2837 | int err; | |
2838 | const char *string = commands[i].argv[0]; | |
2839 | ||
2840 | errmsg = pex_run (pex, | |
2841 | ((i + 1 == n_commands ? PEX_LAST : 0) | |
2842 | | (string == commands[i].prog ? PEX_SEARCH : 0)), | |
2843 | string, CONST_CAST (char **, commands[i].argv), | |
2844 | NULL, NULL, &err); | |
2845 | if (errmsg != NULL) | |
2846 | { | |
2847 | if (err == 0) | |
2848 | fatal_error (errmsg); | |
2849 | else | |
2850 | { | |
2851 | errno = err; | |
2852 | pfatal_with_name (errmsg); | |
2853 | } | |
2854 | } | |
2855 | ||
2856 | if (i && string != commands[i].prog) | |
2857 | free (CONST_CAST (char *, string)); | |
2858 | } | |
2859 | ||
2860 | execution_count++; | |
2861 | ||
2862 | /* Wait for all the subprocesses to finish. */ | |
2863 | ||
2864 | { | |
2865 | int *statuses; | |
2866 | struct pex_time *times = NULL; | |
2867 | int ret_code = 0; | |
2868 | ||
2869 | statuses = (int *) alloca (n_commands * sizeof (int)); | |
2870 | if (!pex_get_status (pex, n_commands, statuses)) | |
2871 | fatal_error ("failed to get exit status: %m"); | |
2872 | ||
2873 | if (report_times || report_times_to_file) | |
2874 | { | |
2875 | times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time)); | |
2876 | if (!pex_get_times (pex, n_commands, times)) | |
2877 | fatal_error ("failed to get process times: %m"); | |
2878 | } | |
2879 | ||
2880 | pex_free (pex); | |
2881 | ||
2882 | for (i = 0; i < n_commands; ++i) | |
2883 | { | |
2884 | int status = statuses[i]; | |
2885 | ||
2886 | if (WIFSIGNALED (status)) | |
2887 | { | |
2888 | #ifdef SIGPIPE | |
2889 | /* SIGPIPE is a special case. It happens in -pipe mode | |
2890 | when the compiler dies before the preprocessor is done, | |
2891 | or the assembler dies before the compiler is done. | |
2892 | There's generally been an error already, and this is | |
2893 | just fallout. So don't generate another error unless | |
2894 | we would otherwise have succeeded. */ | |
2895 | if (WTERMSIG (status) == SIGPIPE | |
2896 | && (signal_count || greatest_status >= MIN_FATAL_STATUS)) | |
2897 | { | |
2898 | signal_count++; | |
2899 | ret_code = -1; | |
2900 | } | |
2901 | else | |
2902 | #endif | |
2903 | internal_error ("%s (program %s)", | |
2904 | strsignal (WTERMSIG (status)), commands[i].prog); | |
2905 | } | |
2906 | else if (WIFEXITED (status) | |
2907 | && WEXITSTATUS (status) >= MIN_FATAL_STATUS) | |
2908 | { | |
2909 | /* For ICEs in cc1, cc1obj, cc1plus see if it is | |
2910 | reproducible or not. */ | |
2911 | const char *p; | |
2912 | if (flag_report_bug | |
2913 | && WEXITSTATUS (status) == ICE_EXIT_CODE | |
2914 | && i == 0 | |
2915 | && (p = strrchr (commands[0].argv[0], DIR_SEPARATOR)) | |
2916 | && ! strncmp (p + 1, "cc1", 3)) | |
2917 | try_generate_repro (commands[0].argv); | |
2918 | if (WEXITSTATUS (status) > greatest_status) | |
2919 | greatest_status = WEXITSTATUS (status); | |
2920 | ret_code = -1; | |
2921 | } | |
2922 | ||
2923 | if (report_times || report_times_to_file) | |
2924 | { | |
2925 | struct pex_time *pt = ×[i]; | |
2926 | double ut, st; | |
2927 | ||
2928 | ut = ((double) pt->user_seconds | |
2929 | + (double) pt->user_microseconds / 1.0e6); | |
2930 | st = ((double) pt->system_seconds | |
2931 | + (double) pt->system_microseconds / 1.0e6); | |
2932 | ||
2933 | if (ut + st != 0) | |
2934 | { | |
2935 | if (report_times) | |
2936 | fnotice (stderr, "# %s %.2f %.2f\n", | |
2937 | commands[i].prog, ut, st); | |
2938 | ||
2939 | if (report_times_to_file) | |
2940 | { | |
2941 | int c = 0; | |
2942 | const char *const *j; | |
2943 | ||
2944 | fprintf (report_times_to_file, "%g %g", ut, st); | |
2945 | ||
2946 | for (j = &commands[i].prog; *j; j = &commands[i].argv[++c]) | |
2947 | { | |
2948 | const char *p; | |
2949 | for (p = *j; *p; ++p) | |
2950 | if (*p == '"' || *p == '\\' || *p == '$' | |
2951 | || ISSPACE (*p)) | |
2952 | break; | |
2953 | ||
2954 | if (*p) | |
2955 | { | |
2956 | fprintf (report_times_to_file, " \""); | |
2957 | for (p = *j; *p; ++p) | |
2958 | { | |
2959 | if (*p == '"' || *p == '\\' || *p == '$') | |
2960 | fputc ('\\', report_times_to_file); | |
2961 | fputc (*p, report_times_to_file); | |
2962 | } | |
2963 | fputc ('"', report_times_to_file); | |
2964 | } | |
2965 | else | |
2966 | fprintf (report_times_to_file, " %s", *j); | |
2967 | } | |
2968 | ||
2969 | fputc ('\n', report_times_to_file); | |
2970 | } | |
2971 | } | |
2972 | } | |
2973 | } | |
2974 | ||
2975 | if (commands[0].argv[0] != commands[0].prog) | |
2976 | free (CONST_CAST (char *, commands[0].argv[0])); | |
2977 | ||
2978 | return ret_code; | |
2979 | } | |
2980 | } | |
2981 | \f | |
2982 | /* Find all the switches given to us | |
2983 | and make a vector describing them. | |
2984 | The elements of the vector are strings, one per switch given. | |
2985 | If a switch uses following arguments, then the `part1' field | |
2986 | is the switch itself and the `args' field | |
2987 | is a null-terminated vector containing the following arguments. | |
2988 | Bits in the `live_cond' field are: | |
2989 | SWITCH_LIVE to indicate this switch is true in a conditional spec. | |
2990 | SWITCH_FALSE to indicate this switch is overridden by a later switch. | |
2991 | SWITCH_IGNORE to indicate this switch should be ignored (used in %<S). | |
2992 | SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored | |
2993 | in all do_spec calls afterwards. Used for %<S from self specs. | |
2994 | The `validated' field is nonzero if any spec has looked at this switch; | |
2995 | if it remains zero at the end of the run, it must be meaningless. */ | |
2996 | ||
2997 | #define SWITCH_LIVE (1 << 0) | |
2998 | #define SWITCH_FALSE (1 << 1) | |
2999 | #define SWITCH_IGNORE (1 << 2) | |
3000 | #define SWITCH_IGNORE_PERMANENTLY (1 << 3) | |
3001 | #define SWITCH_KEEP_FOR_GCC (1 << 4) | |
3002 | ||
3003 | struct switchstr | |
3004 | { | |
3005 | const char *part1; | |
3006 | const char **args; | |
3007 | unsigned int live_cond; | |
3008 | bool known; | |
3009 | bool validated; | |
3010 | bool ordering; | |
3011 | }; | |
3012 | ||
3013 | static struct switchstr *switches; | |
3014 | ||
3015 | static int n_switches; | |
3016 | ||
3017 | static int n_switches_alloc; | |
3018 | ||
3019 | /* Set to zero if -fcompare-debug is disabled, positive if it's | |
3020 | enabled and we're running the first compilation, negative if it's | |
3021 | enabled and we're running the second compilation. For most of the | |
3022 | time, it's in the range -1..1, but it can be temporarily set to 2 | |
3023 | or 3 to indicate that the -fcompare-debug flags didn't come from | |
3024 | the command-line, but rather from the GCC_COMPARE_DEBUG environment | |
3025 | variable, until a synthesized -fcompare-debug flag is added to the | |
3026 | command line. */ | |
3027 | int compare_debug; | |
3028 | ||
3029 | /* Set to nonzero if we've seen the -fcompare-debug-second flag. */ | |
3030 | int compare_debug_second; | |
3031 | ||
3032 | /* Set to the flags that should be passed to the second compilation in | |
3033 | a -fcompare-debug compilation. */ | |
3034 | const char *compare_debug_opt; | |
3035 | ||
3036 | static struct switchstr *switches_debug_check[2]; | |
3037 | ||
3038 | static int n_switches_debug_check[2]; | |
3039 | ||
3040 | static int n_switches_alloc_debug_check[2]; | |
3041 | ||
3042 | static char *debug_check_temp_file[2]; | |
3043 | ||
3044 | /* Language is one of three things: | |
3045 | ||
3046 | 1) The name of a real programming language. | |
3047 | 2) NULL, indicating that no one has figured out | |
3048 | what it is yet. | |
3049 | 3) '*', indicating that the file should be passed | |
3050 | to the linker. */ | |
3051 | struct infile | |
3052 | { | |
3053 | const char *name; | |
3054 | const char *language; | |
3055 | struct compiler *incompiler; | |
3056 | bool compiled; | |
3057 | bool preprocessed; | |
3058 | }; | |
3059 | ||
3060 | /* Also a vector of input files specified. */ | |
3061 | ||
3062 | static struct infile *infiles; | |
3063 | ||
3064 | int n_infiles; | |
3065 | ||
3066 | static int n_infiles_alloc; | |
3067 | ||
3068 | /* True if multiple input files are being compiled to a single | |
3069 | assembly file. */ | |
3070 | ||
3071 | static bool combine_inputs; | |
3072 | ||
3073 | /* This counts the number of libraries added by lang_specific_driver, so that | |
3074 | we can tell if there were any user supplied any files or libraries. */ | |
3075 | ||
3076 | static int added_libraries; | |
3077 | ||
3078 | /* And a vector of corresponding output files is made up later. */ | |
3079 | ||
3080 | const char **outfiles; | |
3081 | \f | |
3082 | #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) | |
3083 | ||
3084 | /* Convert NAME to a new name if it is the standard suffix. DO_EXE | |
3085 | is true if we should look for an executable suffix. DO_OBJ | |
3086 | is true if we should look for an object suffix. */ | |
3087 | ||
3088 | static const char * | |
3089 | convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED, | |
3090 | int do_obj ATTRIBUTE_UNUSED) | |
3091 | { | |
3092 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) | |
3093 | int i; | |
3094 | #endif | |
3095 | int len; | |
3096 | ||
3097 | if (name == NULL) | |
3098 | return NULL; | |
3099 | ||
3100 | len = strlen (name); | |
3101 | ||
3102 | #ifdef HAVE_TARGET_OBJECT_SUFFIX | |
3103 | /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ | |
3104 | if (do_obj && len > 2 | |
3105 | && name[len - 2] == '.' | |
3106 | && name[len - 1] == 'o') | |
3107 | { | |
3108 | obstack_grow (&obstack, name, len - 2); | |
3109 | obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); | |
3110 | name = XOBFINISH (&obstack, const char *); | |
3111 | } | |
3112 | #endif | |
3113 | ||
3114 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) | |
3115 | /* If there is no filetype, make it the executable suffix (which includes | |
3116 | the "."). But don't get confused if we have just "-o". */ | |
3117 | if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-')) | |
3118 | return name; | |
3119 | ||
3120 | for (i = len - 1; i >= 0; i--) | |
3121 | if (IS_DIR_SEPARATOR (name[i])) | |
3122 | break; | |
3123 | ||
3124 | for (i++; i < len; i++) | |
3125 | if (name[i] == '.') | |
3126 | return name; | |
3127 | ||
3128 | obstack_grow (&obstack, name, len); | |
3129 | obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, | |
3130 | strlen (TARGET_EXECUTABLE_SUFFIX)); | |
3131 | name = XOBFINISH (&obstack, const char *); | |
3132 | #endif | |
3133 | ||
3134 | return name; | |
3135 | } | |
3136 | #endif | |
3137 | \f | |
3138 | /* Display the command line switches accepted by gcc. */ | |
3139 | static void | |
3140 | display_help (void) | |
3141 | { | |
3142 | printf (_("Usage: %s [options] file...\n"), progname); | |
3143 | fputs (_("Options:\n"), stdout); | |
3144 | ||
3145 | fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout); | |
3146 | fputs (_(" --help Display this information\n"), stdout); | |
3147 | fputs (_(" --target-help Display target specific command line options\n"), stdout); | |
3148 | fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout); | |
3149 | fputs (_(" Display specific types of command line options\n"), stdout); | |
3150 | if (! verbose_flag) | |
3151 | fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout); | |
3152 | fputs (_(" --version Display compiler version information\n"), stdout); | |
3153 | fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout); | |
3154 | fputs (_(" -dumpversion Display the version of the compiler\n"), stdout); | |
3155 | fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout); | |
3156 | fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout); | |
3157 | fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout); | |
3158 | fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout); | |
3159 | fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout); | |
3160 | fputs (_("\ | |
3161 | -print-multiarch Display the target's normalized GNU triplet, used as\n\ | |
3162 | a component in the library path\n"), stdout); | |
3163 | fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout); | |
3164 | fputs (_("\ | |
3165 | -print-multi-lib Display the mapping between command line options and\n\ | |
3166 | multiple library search directories\n"), stdout); | |
3167 | fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout); | |
3168 | fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout); | |
3169 | fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout); | |
3170 | fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout); | |
3171 | fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout); | |
3172 | fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout); | |
3173 | fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout); | |
3174 | fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout); | |
3175 | fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout); | |
3176 | fputs (_(" -save-temps Do not delete intermediate files\n"), stdout); | |
3177 | fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout); | |
3178 | fputs (_("\ | |
3179 | -no-canonical-prefixes Do not canonicalize paths when building relative\n\ | |
3180 | prefixes to other gcc components\n"), stdout); | |
3181 | fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout); | |
3182 | fputs (_(" -time Time the execution of each subprocess\n"), stdout); | |
3183 | fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout); | |
3184 | fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout); | |
3185 | fputs (_("\ | |
3186 | --sysroot=<directory> Use <directory> as the root directory for headers\n\ | |
3187 | and libraries\n"), stdout); | |
3188 | fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout); | |
3189 | fputs (_(" -v Display the programs invoked by the compiler\n"), stdout); | |
3190 | fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout); | |
3191 | fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout); | |
3192 | fputs (_(" -S Compile only; do not assemble or link\n"), stdout); | |
3193 | fputs (_(" -c Compile and assemble, but do not link\n"), stdout); | |
3194 | fputs (_(" -o <file> Place the output into <file>\n"), stdout); | |
3195 | fputs (_(" -pie Create a position independent executable\n"), stdout); | |
3196 | fputs (_(" -shared Create a shared library\n"), stdout); | |
3197 | fputs (_("\ | |
3198 | -x <language> Specify the language of the following input files\n\ | |
3199 | Permissible languages include: c c++ assembler none\n\ | |
3200 | 'none' means revert to the default behavior of\n\ | |
3201 | guessing the language based on the file's extension\n\ | |
3202 | "), stdout); | |
3203 | ||
3204 | printf (_("\ | |
3205 | \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ | |
3206 | passed on to the various sub-processes invoked by %s. In order to pass\n\ | |
3207 | other options on to these processes the -W<letter> options must be used.\n\ | |
3208 | "), progname); | |
3209 | ||
3210 | /* The rest of the options are displayed by invocations of the various | |
3211 | sub-processes. */ | |
3212 | } | |
3213 | ||
3214 | static void | |
3215 | add_preprocessor_option (const char *option, int len) | |
3216 | { | |
3217 | preprocessor_options.safe_push (save_string (option, len)); | |
3218 | } | |
3219 | ||
3220 | static void | |
3221 | add_assembler_option (const char *option, int len) | |
3222 | { | |
3223 | assembler_options.safe_push (save_string (option, len)); | |
3224 | } | |
3225 | ||
3226 | static void | |
3227 | add_linker_option (const char *option, int len) | |
3228 | { | |
3229 | linker_options.safe_push (save_string (option, len)); | |
3230 | } | |
3231 | \f | |
3232 | /* Allocate space for an input file in infiles. */ | |
3233 | ||
3234 | static void | |
3235 | alloc_infile (void) | |
3236 | { | |
3237 | if (n_infiles_alloc == 0) | |
3238 | { | |
3239 | n_infiles_alloc = 16; | |
3240 | infiles = XNEWVEC (struct infile, n_infiles_alloc); | |
3241 | } | |
3242 | else if (n_infiles_alloc == n_infiles) | |
3243 | { | |
3244 | n_infiles_alloc *= 2; | |
3245 | infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc); | |
3246 | } | |
3247 | } | |
3248 | ||
3249 | /* Store an input file with the given NAME and LANGUAGE in | |
3250 | infiles. */ | |
3251 | ||
3252 | static void | |
3253 | add_infile (const char *name, const char *language) | |
3254 | { | |
3255 | alloc_infile (); | |
3256 | infiles[n_infiles].name = name; | |
3257 | infiles[n_infiles++].language = language; | |
3258 | } | |
3259 | ||
3260 | /* Allocate space for a switch in switches. */ | |
3261 | ||
3262 | static void | |
3263 | alloc_switch (void) | |
3264 | { | |
3265 | if (n_switches_alloc == 0) | |
3266 | { | |
3267 | n_switches_alloc = 16; | |
3268 | switches = XNEWVEC (struct switchstr, n_switches_alloc); | |
3269 | } | |
3270 | else if (n_switches_alloc == n_switches) | |
3271 | { | |
3272 | n_switches_alloc *= 2; | |
3273 | switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc); | |
3274 | } | |
3275 | } | |
3276 | ||
3277 | /* Save an option OPT with N_ARGS arguments in array ARGS, marking it | |
3278 | as validated if VALIDATED and KNOWN if it is an internal switch. */ | |
3279 | ||
3280 | static void | |
3281 | save_switch (const char *opt, size_t n_args, const char *const *args, | |
3282 | bool validated, bool known) | |
3283 | { | |
3284 | alloc_switch (); | |
3285 | switches[n_switches].part1 = opt + 1; | |
3286 | if (n_args == 0) | |
3287 | switches[n_switches].args = 0; | |
3288 | else | |
3289 | { | |
3290 | switches[n_switches].args = XNEWVEC (const char *, n_args + 1); | |
3291 | memcpy (switches[n_switches].args, args, n_args * sizeof (const char *)); | |
3292 | switches[n_switches].args[n_args] = NULL; | |
3293 | } | |
3294 | ||
3295 | switches[n_switches].live_cond = 0; | |
3296 | switches[n_switches].validated = validated; | |
3297 | switches[n_switches].known = known; | |
3298 | switches[n_switches].ordering = 0; | |
3299 | n_switches++; | |
3300 | } | |
3301 | ||
3302 | /* Handle an option DECODED that is unknown to the option-processing | |
3303 | machinery. */ | |
3304 | ||
3305 | static bool | |
3306 | driver_unknown_option_callback (const struct cl_decoded_option *decoded) | |
3307 | { | |
3308 | const char *opt = decoded->arg; | |
3309 | if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-' | |
3310 | && !(decoded->errors & CL_ERR_NEGATIVE)) | |
3311 | { | |
3312 | /* Leave unknown -Wno-* options for the compiler proper, to be | |
3313 | diagnosed only if there are warnings. */ | |
3314 | save_switch (decoded->canonical_option[0], | |
3315 | decoded->canonical_option_num_elements - 1, | |
3316 | &decoded->canonical_option[1], false, true); | |
3317 | return false; | |
3318 | } | |
3319 | if (decoded->opt_index == OPT_SPECIAL_unknown) | |
3320 | { | |
3321 | /* Give it a chance to define it a a spec file. */ | |
3322 | save_switch (decoded->canonical_option[0], | |
3323 | decoded->canonical_option_num_elements - 1, | |
3324 | &decoded->canonical_option[1], false, false); | |
3325 | return false; | |
3326 | } | |
3327 | else | |
3328 | return true; | |
3329 | } | |
3330 | ||
3331 | /* Handle an option DECODED that is not marked as CL_DRIVER. | |
3332 | LANG_MASK will always be CL_DRIVER. */ | |
3333 | ||
3334 | static void | |
3335 | driver_wrong_lang_callback (const struct cl_decoded_option *decoded, | |
3336 | unsigned int lang_mask ATTRIBUTE_UNUSED) | |
3337 | { | |
3338 | /* At this point, non-driver options are accepted (and expected to | |
3339 | be passed down by specs) unless marked to be rejected by the | |
3340 | driver. Options to be rejected by the driver but accepted by the | |
3341 | compilers proper are treated just like completely unknown | |
3342 | options. */ | |
3343 | const struct cl_option *option = &cl_options[decoded->opt_index]; | |
3344 | ||
3345 | if (option->cl_reject_driver) | |
3346 | error ("unrecognized command line option %qs", | |
3347 | decoded->orig_option_with_args_text); | |
3348 | else | |
3349 | save_switch (decoded->canonical_option[0], | |
3350 | decoded->canonical_option_num_elements - 1, | |
3351 | &decoded->canonical_option[1], false, true); | |
3352 | } | |
3353 | ||
3354 | static const char *spec_lang = 0; | |
3355 | static int last_language_n_infiles; | |
3356 | ||
3357 | /* Handle a driver option; arguments and return value as for | |
3358 | handle_option. */ | |
3359 | ||
3360 | static bool | |
3361 | driver_handle_option (struct gcc_options *opts, | |
3362 | struct gcc_options *opts_set, | |
3363 | const struct cl_decoded_option *decoded, | |
3364 | unsigned int lang_mask ATTRIBUTE_UNUSED, int kind, | |
3365 | location_t loc, | |
3366 | const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED, | |
3367 | diagnostic_context *dc) | |
3368 | { | |
3369 | size_t opt_index = decoded->opt_index; | |
3370 | const char *arg = decoded->arg; | |
3371 | const char *compare_debug_replacement_opt; | |
3372 | int value = decoded->value; | |
3373 | bool validated = false; | |
3374 | bool do_save = true; | |
3375 | ||
3376 | gcc_assert (opts == &global_options); | |
3377 | gcc_assert (opts_set == &global_options_set); | |
3378 | gcc_assert (kind == DK_UNSPECIFIED); | |
3379 | gcc_assert (loc == UNKNOWN_LOCATION); | |
3380 | gcc_assert (dc == global_dc); | |
3381 | ||
3382 | switch (opt_index) | |
3383 | { | |
3384 | case OPT_dumpspecs: | |
3385 | { | |
3386 | struct spec_list *sl; | |
3387 | init_spec (); | |
3388 | for (sl = specs; sl; sl = sl->next) | |
3389 | printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); | |
3390 | if (link_command_spec) | |
3391 | printf ("*link_command:\n%s\n\n", link_command_spec); | |
3392 | exit (0); | |
3393 | } | |
3394 | ||
3395 | case OPT_dumpversion: | |
3396 | printf ("%s\n", spec_version); | |
3397 | exit (0); | |
3398 | ||
3399 | case OPT_dumpmachine: | |
3400 | printf ("%s\n", spec_machine); | |
3401 | exit (0); | |
3402 | ||
3403 | case OPT__version: | |
3404 | print_version = 1; | |
3405 | ||
3406 | /* CPP driver cannot obtain switch from cc1_options. */ | |
3407 | if (is_cpp_driver) | |
3408 | add_preprocessor_option ("--version", strlen ("--version")); | |
3409 | add_assembler_option ("--version", strlen ("--version")); | |
3410 | add_linker_option ("--version", strlen ("--version")); | |
3411 | break; | |
3412 | ||
3413 | case OPT__help: | |
3414 | print_help_list = 1; | |
3415 | ||
3416 | /* CPP driver cannot obtain switch from cc1_options. */ | |
3417 | if (is_cpp_driver) | |
3418 | add_preprocessor_option ("--help", 6); | |
3419 | add_assembler_option ("--help", 6); | |
3420 | add_linker_option ("--help", 6); | |
3421 | break; | |
3422 | ||
3423 | case OPT__help_: | |
3424 | print_subprocess_help = 2; | |
3425 | break; | |
3426 | ||
3427 | case OPT__target_help: | |
3428 | print_subprocess_help = 1; | |
3429 | ||
3430 | /* CPP driver cannot obtain switch from cc1_options. */ | |
3431 | if (is_cpp_driver) | |
3432 | add_preprocessor_option ("--target-help", 13); | |
3433 | add_assembler_option ("--target-help", 13); | |
3434 | add_linker_option ("--target-help", 13); | |
3435 | break; | |
3436 | ||
3437 | case OPT__no_sysroot_suffix: | |
3438 | case OPT_pass_exit_codes: | |
3439 | case OPT_print_search_dirs: | |
3440 | case OPT_print_file_name_: | |
3441 | case OPT_print_prog_name_: | |
3442 | case OPT_print_multi_lib: | |
3443 | case OPT_print_multi_directory: | |
3444 | case OPT_print_sysroot: | |
3445 | case OPT_print_multi_os_directory: | |
3446 | case OPT_print_multiarch: | |
3447 | case OPT_print_sysroot_headers_suffix: | |
3448 | case OPT_time: | |
3449 | case OPT_wrapper: | |
3450 | /* These options set the variables specified in common.opt | |
3451 | automatically, and do not need to be saved for spec | |
3452 | processing. */ | |
3453 | do_save = false; | |
3454 | break; | |
3455 | ||
3456 | case OPT_print_libgcc_file_name: | |
3457 | print_file_name = "libgcc.a"; | |
3458 | do_save = false; | |
3459 | break; | |
3460 | ||
3461 | case OPT_fuse_ld_bfd: | |
3462 | use_ld = ".bfd"; | |
3463 | break; | |
3464 | ||
3465 | case OPT_fuse_ld_gold: | |
3466 | use_ld = ".gold"; | |
3467 | break; | |
3468 | ||
3469 | case OPT_fcompare_debug_second: | |
3470 | compare_debug_second = 1; | |
3471 | break; | |
3472 | ||
3473 | case OPT_fcompare_debug: | |
3474 | switch (value) | |
3475 | { | |
3476 | case 0: | |
3477 | compare_debug_replacement_opt = "-fcompare-debug="; | |
3478 | arg = ""; | |
3479 | goto compare_debug_with_arg; | |
3480 | ||
3481 | case 1: | |
3482 | compare_debug_replacement_opt = "-fcompare-debug=-gtoggle"; | |
3483 | arg = "-gtoggle"; | |
3484 | goto compare_debug_with_arg; | |
3485 | ||
3486 | default: | |
3487 | gcc_unreachable (); | |
3488 | } | |
3489 | break; | |
3490 | ||
3491 | case OPT_fcompare_debug_: | |
3492 | compare_debug_replacement_opt = decoded->canonical_option[0]; | |
3493 | compare_debug_with_arg: | |
3494 | gcc_assert (decoded->canonical_option_num_elements == 1); | |
3495 | gcc_assert (arg != NULL); | |
3496 | if (*arg) | |
3497 | compare_debug = 1; | |
3498 | else | |
3499 | compare_debug = -1; | |
3500 | if (compare_debug < 0) | |
3501 | compare_debug_opt = NULL; | |
3502 | else | |
3503 | compare_debug_opt = arg; | |
3504 | save_switch (compare_debug_replacement_opt, 0, NULL, validated, true); | |
3505 | return true; | |
3506 | ||
3507 | case OPT_Wa_: | |
3508 | { | |
3509 | int prev, j; | |
3510 | /* Pass the rest of this option to the assembler. */ | |
3511 | ||
3512 | /* Split the argument at commas. */ | |
3513 | prev = 0; | |
3514 | for (j = 0; arg[j]; j++) | |
3515 | if (arg[j] == ',') | |
3516 | { | |
3517 | add_assembler_option (arg + prev, j - prev); | |
3518 | prev = j + 1; | |
3519 | } | |
3520 | ||
3521 | /* Record the part after the last comma. */ | |
3522 | add_assembler_option (arg + prev, j - prev); | |
3523 | } | |
3524 | do_save = false; | |
3525 | break; | |
3526 | ||
3527 | case OPT_Wp_: | |
3528 | { | |
3529 | int prev, j; | |
3530 | /* Pass the rest of this option to the preprocessor. */ | |
3531 | ||
3532 | /* Split the argument at commas. */ | |
3533 | prev = 0; | |
3534 | for (j = 0; arg[j]; j++) | |
3535 | if (arg[j] == ',') | |
3536 | { | |
3537 | add_preprocessor_option (arg + prev, j - prev); | |
3538 | prev = j + 1; | |
3539 | } | |
3540 | ||
3541 | /* Record the part after the last comma. */ | |
3542 | add_preprocessor_option (arg + prev, j - prev); | |
3543 | } | |
3544 | do_save = false; | |
3545 | break; | |
3546 | ||
3547 | case OPT_Wl_: | |
3548 | { | |
3549 | int prev, j; | |
3550 | /* Split the argument at commas. */ | |
3551 | prev = 0; | |
3552 | for (j = 0; arg[j]; j++) | |
3553 | if (arg[j] == ',') | |
3554 | { | |
3555 | add_infile (save_string (arg + prev, j - prev), "*"); | |
3556 | prev = j + 1; | |
3557 | } | |
3558 | /* Record the part after the last comma. */ | |
3559 | add_infile (arg + prev, "*"); | |
3560 | } | |
3561 | do_save = false; | |
3562 | break; | |
3563 | ||
3564 | case OPT_Xlinker: | |
3565 | add_infile (arg, "*"); | |
3566 | do_save = false; | |
3567 | break; | |
3568 | ||
3569 | case OPT_Xpreprocessor: | |
3570 | add_preprocessor_option (arg, strlen (arg)); | |
3571 | do_save = false; | |
3572 | break; | |
3573 | ||
3574 | case OPT_Xassembler: | |
3575 | add_assembler_option (arg, strlen (arg)); | |
3576 | do_save = false; | |
3577 | break; | |
3578 | ||
3579 | case OPT_l: | |
3580 | /* POSIX allows separation of -l and the lib arg; canonicalize | |
3581 | by concatenating -l with its arg */ | |
3582 | add_infile (concat ("-l", arg, NULL), "*"); | |
3583 | do_save = false; | |
3584 | break; | |
3585 | ||
3586 | case OPT_L: | |
3587 | /* Similarly, canonicalize -L for linkers that may not accept | |
3588 | separate arguments. */ | |
3589 | save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true); | |
3590 | return true; | |
3591 | ||
3592 | case OPT_F: | |
3593 | /* Likewise -F. */ | |
3594 | save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true); | |
3595 | return true; | |
3596 | ||
3597 | case OPT_save_temps: | |
3598 | save_temps_flag = SAVE_TEMPS_CWD; | |
3599 | validated = true; | |
3600 | break; | |
3601 | ||
3602 | case OPT_save_temps_: | |
3603 | if (strcmp (arg, "cwd") == 0) | |
3604 | save_temps_flag = SAVE_TEMPS_CWD; | |
3605 | else if (strcmp (arg, "obj") == 0 | |
3606 | || strcmp (arg, "object") == 0) | |
3607 | save_temps_flag = SAVE_TEMPS_OBJ; | |
3608 | else | |
3609 | fatal_error ("%qs is an unknown -save-temps option", | |
3610 | decoded->orig_option_with_args_text); | |
3611 | break; | |
3612 | ||
3613 | case OPT_no_canonical_prefixes: | |
3614 | /* Already handled as a special case, so ignored here. */ | |
3615 | do_save = false; | |
3616 | break; | |
3617 | ||
3618 | case OPT_pipe: | |
3619 | validated = true; | |
3620 | /* These options set the variables specified in common.opt | |
3621 | automatically, but do need to be saved for spec | |
3622 | processing. */ | |
3623 | break; | |
3624 | ||
3625 | case OPT_specs_: | |
3626 | { | |
3627 | struct user_specs *user = XNEW (struct user_specs); | |
3628 | ||
3629 | user->next = (struct user_specs *) 0; | |
3630 | user->filename = arg; | |
3631 | if (user_specs_tail) | |
3632 | user_specs_tail->next = user; | |
3633 | else | |
3634 | user_specs_head = user; | |
3635 | user_specs_tail = user; | |
3636 | } | |
3637 | validated = true; | |
3638 | break; | |
3639 | ||
3640 | case OPT__sysroot_: | |
3641 | target_system_root = arg; | |
3642 | target_system_root_changed = 1; | |
3643 | do_save = false; | |
3644 | break; | |
3645 | ||
3646 | case OPT_time_: | |
3647 | if (report_times_to_file) | |
3648 | fclose (report_times_to_file); | |
3649 | report_times_to_file = fopen (arg, "a"); | |
3650 | do_save = false; | |
3651 | break; | |
3652 | ||
3653 | case OPT____: | |
3654 | /* "-###" | |
3655 | This is similar to -v except that there is no execution | |
3656 | of the commands and the echoed arguments are quoted. It | |
3657 | is intended for use in shell scripts to capture the | |
3658 | driver-generated command line. */ | |
3659 | verbose_only_flag++; | |
3660 | verbose_flag = 1; | |
3661 | do_save = false; | |
3662 | break; | |
3663 | ||
3664 | case OPT_B: | |
3665 | { | |
3666 | size_t len = strlen (arg); | |
3667 | ||
3668 | /* Catch the case where the user has forgotten to append a | |
3669 | directory separator to the path. Note, they may be using | |
3670 | -B to add an executable name prefix, eg "i386-elf-", in | |
3671 | order to distinguish between multiple installations of | |
3672 | GCC in the same directory. Hence we must check to see | |
3673 | if appending a directory separator actually makes a | |
3674 | valid directory name. */ | |
3675 | if (!IS_DIR_SEPARATOR (arg[len - 1]) | |
3676 | && is_directory (arg, false)) | |
3677 | { | |
3678 | char *tmp = XNEWVEC (char, len + 2); | |
3679 | strcpy (tmp, arg); | |
3680 | tmp[len] = DIR_SEPARATOR; | |
3681 | tmp[++len] = 0; | |
3682 | arg = tmp; | |
3683 | } | |
3684 | ||
3685 | add_prefix (&exec_prefixes, arg, NULL, | |
3686 | PREFIX_PRIORITY_B_OPT, 0, 0); | |
3687 | add_prefix (&startfile_prefixes, arg, NULL, | |
3688 | PREFIX_PRIORITY_B_OPT, 0, 0); | |
3689 | add_prefix (&include_prefixes, arg, NULL, | |
3690 | PREFIX_PRIORITY_B_OPT, 0, 0); | |
3691 | } | |
3692 | validated = true; | |
3693 | break; | |
3694 | ||
3695 | case OPT_x: | |
3696 | spec_lang = arg; | |
3697 | if (!strcmp (spec_lang, "none")) | |
3698 | /* Suppress the warning if -xnone comes after the last input | |
3699 | file, because alternate command interfaces like g++ might | |
3700 | find it useful to place -xnone after each input file. */ | |
3701 | spec_lang = 0; | |
3702 | else | |
3703 | last_language_n_infiles = n_infiles; | |
3704 | do_save = false; | |
3705 | break; | |
3706 | ||
3707 | case OPT_o: | |
3708 | have_o = 1; | |
3709 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) | |
3710 | arg = convert_filename (arg, ! have_c, 0); | |
3711 | #endif | |
3712 | output_file = arg; | |
3713 | /* Save the output name in case -save-temps=obj was used. */ | |
3714 | save_temps_prefix = xstrdup (arg); | |
3715 | /* On some systems, ld cannot handle "-o" without a space. So | |
3716 | split the option from its argument. */ | |
3717 | save_switch ("-o", 1, &arg, validated, true); | |
3718 | return true; | |
3719 | ||
3720 | case OPT_static_libgcc: | |
3721 | case OPT_shared_libgcc: | |
3722 | case OPT_static_libgfortran: | |
3723 | case OPT_static_libstdc__: | |
3724 | /* These are always valid, since gcc.c itself understands the | |
3725 | first two, gfortranspec.c understands -static-libgfortran and | |
3726 | g++spec.c understands -static-libstdc++ */ | |
3727 | validated = true; | |
3728 | break; | |
3729 | ||
3730 | case OPT_fwpa: | |
3731 | flag_wpa = ""; | |
3732 | break; | |
3733 | ||
3734 | default: | |
3735 | /* Various driver options need no special processing at this | |
3736 | point, having been handled in a prescan above or being | |
3737 | handled by specs. */ | |
3738 | break; | |
3739 | } | |
3740 | ||
3741 | if (do_save) | |
3742 | save_switch (decoded->canonical_option[0], | |
3743 | decoded->canonical_option_num_elements - 1, | |
3744 | &decoded->canonical_option[1], validated, true); | |
3745 | return true; | |
3746 | } | |
3747 | ||
3748 | /* Put the driver's standard set of option handlers in *HANDLERS. */ | |
3749 | ||
3750 | static void | |
3751 | set_option_handlers (struct cl_option_handlers *handlers) | |
3752 | { | |
3753 | handlers->unknown_option_callback = driver_unknown_option_callback; | |
3754 | handlers->wrong_lang_callback = driver_wrong_lang_callback; | |
3755 | handlers->num_handlers = 3; | |
3756 | handlers->handlers[0].handler = driver_handle_option; | |
3757 | handlers->handlers[0].mask = CL_DRIVER; | |
3758 | handlers->handlers[1].handler = common_handle_option; | |
3759 | handlers->handlers[1].mask = CL_COMMON; | |
3760 | handlers->handlers[2].handler = target_handle_option; | |
3761 | handlers->handlers[2].mask = CL_TARGET; | |
3762 | } | |
3763 | ||
3764 | /* Create the vector `switches' and its contents. | |
3765 | Store its length in `n_switches'. */ | |
3766 | ||
3767 | static void | |
3768 | process_command (unsigned int decoded_options_count, | |
3769 | struct cl_decoded_option *decoded_options) | |
3770 | { | |
3771 | const char *temp; | |
3772 | char *temp1; | |
3773 | char *tooldir_prefix, *tooldir_prefix2; | |
3774 | char *(*get_relative_prefix) (const char *, const char *, | |
3775 | const char *) = NULL; | |
3776 | struct cl_option_handlers handlers; | |
3777 | unsigned int j; | |
3778 | ||
3779 | gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX"); | |
3780 | ||
3781 | n_switches = 0; | |
3782 | n_infiles = 0; | |
3783 | added_libraries = 0; | |
3784 | ||
3785 | /* Figure compiler version from version string. */ | |
3786 | ||
3787 | compiler_version = temp1 = xstrdup (version_string); | |
3788 | ||
3789 | for (; *temp1; ++temp1) | |
3790 | { | |
3791 | if (*temp1 == ' ') | |
3792 | { | |
3793 | *temp1 = '\0'; | |
3794 | break; | |
3795 | } | |
3796 | } | |
3797 | ||
3798 | /* Handle any -no-canonical-prefixes flag early, to assign the function | |
3799 | that builds relative prefixes. This function creates default search | |
3800 | paths that are needed later in normal option handling. */ | |
3801 | ||
3802 | for (j = 1; j < decoded_options_count; j++) | |
3803 | { | |
3804 | if (decoded_options[j].opt_index == OPT_no_canonical_prefixes) | |
3805 | { | |
3806 | get_relative_prefix = make_relative_prefix_ignore_links; | |
3807 | break; | |
3808 | } | |
3809 | } | |
3810 | if (! get_relative_prefix) | |
3811 | get_relative_prefix = make_relative_prefix; | |
3812 | ||
3813 | /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, | |
3814 | see if we can create it from the pathname specified in | |
3815 | decoded_options[0].arg. */ | |
3816 | ||
3817 | gcc_libexec_prefix = standard_libexec_prefix; | |
3818 | #ifndef VMS | |
3819 | /* FIXME: make_relative_prefix doesn't yet work for VMS. */ | |
3820 | if (!gcc_exec_prefix) | |
3821 | { | |
3822 | gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg, | |
3823 | standard_bindir_prefix, | |
3824 | standard_exec_prefix); | |
3825 | gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg, | |
3826 | standard_bindir_prefix, | |
3827 | standard_libexec_prefix); | |
3828 | if (gcc_exec_prefix) | |
3829 | xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); | |
3830 | } | |
3831 | else | |
3832 | { | |
3833 | /* make_relative_prefix requires a program name, but | |
3834 | GCC_EXEC_PREFIX is typically a directory name with a trailing | |
3835 | / (which is ignored by make_relative_prefix), so append a | |
3836 | program name. */ | |
3837 | char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL); | |
3838 | gcc_libexec_prefix = get_relative_prefix (tmp_prefix, | |
3839 | standard_exec_prefix, | |
3840 | standard_libexec_prefix); | |
3841 | ||
3842 | /* The path is unrelocated, so fallback to the original setting. */ | |
3843 | if (!gcc_libexec_prefix) | |
3844 | gcc_libexec_prefix = standard_libexec_prefix; | |
3845 | ||
3846 | free (tmp_prefix); | |
3847 | } | |
3848 | #else | |
3849 | #endif | |
3850 | /* From this point onward, gcc_exec_prefix is non-null if the toolchain | |
3851 | is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX | |
3852 | or an automatically created GCC_EXEC_PREFIX from | |
3853 | decoded_options[0].arg. */ | |
3854 | ||
3855 | /* Do language-specific adjustment/addition of flags. */ | |
3856 | lang_specific_driver (&decoded_options, &decoded_options_count, | |
3857 | &added_libraries); | |
3858 | ||
3859 | if (gcc_exec_prefix) | |
3860 | { | |
3861 | int len = strlen (gcc_exec_prefix); | |
3862 | ||
3863 | if (len > (int) sizeof ("/lib/gcc/") - 1 | |
3864 | && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) | |
3865 | { | |
3866 | temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1; | |
3867 | if (IS_DIR_SEPARATOR (*temp) | |
3868 | && filename_ncmp (temp + 1, "lib", 3) == 0 | |
3869 | && IS_DIR_SEPARATOR (temp[4]) | |
3870 | && filename_ncmp (temp + 5, "gcc", 3) == 0) | |
3871 | len -= sizeof ("/lib/gcc/") - 1; | |
3872 | } | |
3873 | ||
3874 | set_std_prefix (gcc_exec_prefix, len); | |
3875 | add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC", | |
3876 | PREFIX_PRIORITY_LAST, 0, 0); | |
3877 | add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC", | |
3878 | PREFIX_PRIORITY_LAST, 0, 0); | |
3879 | } | |
3880 | ||
3881 | /* COMPILER_PATH and LIBRARY_PATH have values | |
3882 | that are lists of directory names with colons. */ | |
3883 | ||
3884 | temp = getenv ("COMPILER_PATH"); | |
3885 | if (temp) | |
3886 | { | |
3887 | const char *startp, *endp; | |
3888 | char *nstore = (char *) alloca (strlen (temp) + 3); | |
3889 | ||
3890 | startp = endp = temp; | |
3891 | while (1) | |
3892 | { | |
3893 | if (*endp == PATH_SEPARATOR || *endp == 0) | |
3894 | { | |
3895 | strncpy (nstore, startp, endp - startp); | |
3896 | if (endp == startp) | |
3897 | strcpy (nstore, concat (".", dir_separator_str, NULL)); | |
3898 | else if (!IS_DIR_SEPARATOR (endp[-1])) | |
3899 | { | |
3900 | nstore[endp - startp] = DIR_SEPARATOR; | |
3901 | nstore[endp - startp + 1] = 0; | |
3902 | } | |
3903 | else | |
3904 | nstore[endp - startp] = 0; | |
3905 | add_prefix (&exec_prefixes, nstore, 0, | |
3906 | PREFIX_PRIORITY_LAST, 0, 0); | |
3907 | add_prefix (&include_prefixes, nstore, 0, | |
3908 | PREFIX_PRIORITY_LAST, 0, 0); | |
3909 | if (*endp == 0) | |
3910 | break; | |
3911 | endp = startp = endp + 1; | |
3912 | } | |
3913 | else | |
3914 | endp++; | |
3915 | } | |
3916 | } | |
3917 | ||
3918 | temp = getenv (LIBRARY_PATH_ENV); | |
3919 | if (temp && *cross_compile == '0') | |
3920 | { | |
3921 | const char *startp, *endp; | |
3922 | char *nstore = (char *) alloca (strlen (temp) + 3); | |
3923 | ||
3924 | startp = endp = temp; | |
3925 | while (1) | |
3926 | { | |
3927 | if (*endp == PATH_SEPARATOR || *endp == 0) | |
3928 | { | |
3929 | strncpy (nstore, startp, endp - startp); | |
3930 | if (endp == startp) | |
3931 | strcpy (nstore, concat (".", dir_separator_str, NULL)); | |
3932 | else if (!IS_DIR_SEPARATOR (endp[-1])) | |
3933 | { | |
3934 | nstore[endp - startp] = DIR_SEPARATOR; | |
3935 | nstore[endp - startp + 1] = 0; | |
3936 | } | |
3937 | else | |
3938 | nstore[endp - startp] = 0; | |
3939 | add_prefix (&startfile_prefixes, nstore, NULL, | |
3940 | PREFIX_PRIORITY_LAST, 0, 1); | |
3941 | if (*endp == 0) | |
3942 | break; | |
3943 | endp = startp = endp + 1; | |
3944 | } | |
3945 | else | |
3946 | endp++; | |
3947 | } | |
3948 | } | |
3949 | ||
3950 | /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ | |
3951 | temp = getenv ("LPATH"); | |
3952 | if (temp && *cross_compile == '0') | |
3953 | { | |
3954 | const char *startp, *endp; | |
3955 | char *nstore = (char *) alloca (strlen (temp) + 3); | |
3956 | ||
3957 | startp = endp = temp; | |
3958 | while (1) | |
3959 | { | |
3960 | if (*endp == PATH_SEPARATOR || *endp == 0) | |
3961 | { | |
3962 | strncpy (nstore, startp, endp - startp); | |
3963 | if (endp == startp) | |
3964 | strcpy (nstore, concat (".", dir_separator_str, NULL)); | |
3965 | else if (!IS_DIR_SEPARATOR (endp[-1])) | |
3966 | { | |
3967 | nstore[endp - startp] = DIR_SEPARATOR; | |
3968 | nstore[endp - startp + 1] = 0; | |
3969 | } | |
3970 | else | |
3971 | nstore[endp - startp] = 0; | |
3972 | add_prefix (&startfile_prefixes, nstore, NULL, | |
3973 | PREFIX_PRIORITY_LAST, 0, 1); | |
3974 | if (*endp == 0) | |
3975 | break; | |
3976 | endp = startp = endp + 1; | |
3977 | } | |
3978 | else | |
3979 | endp++; | |
3980 | } | |
3981 | } | |
3982 | ||
3983 | /* Process the options and store input files and switches in their | |
3984 | vectors. */ | |
3985 | ||
3986 | last_language_n_infiles = -1; | |
3987 | ||
3988 | set_option_handlers (&handlers); | |
3989 | ||
3990 | for (j = 1; j < decoded_options_count; j++) | |
3991 | { | |
3992 | switch (decoded_options[j].opt_index) | |
3993 | { | |
3994 | case OPT_S: | |
3995 | case OPT_c: | |
3996 | case OPT_E: | |
3997 | have_c = 1; | |
3998 | break; | |
3999 | } | |
4000 | if (have_c) | |
4001 | break; | |
4002 | } | |
4003 | ||
4004 | for (j = 1; j < decoded_options_count; j++) | |
4005 | { | |
4006 | if (decoded_options[j].opt_index == OPT_SPECIAL_input_file) | |
4007 | { | |
4008 | const char *arg = decoded_options[j].arg; | |
4009 | const char *p = strrchr (arg, '@'); | |
4010 | char *fname; | |
4011 | long offset; | |
4012 | int consumed; | |
4013 | #ifdef HAVE_TARGET_OBJECT_SUFFIX | |
4014 | arg = convert_filename (arg, 0, access (arg, F_OK)); | |
4015 | #endif | |
4016 | /* For LTO static archive support we handle input file | |
4017 | specifications that are composed of a filename and | |
4018 | an offset like FNAME@OFFSET. */ | |
4019 | if (p | |
4020 | && p != arg | |
4021 | && sscanf (p, "@%li%n", &offset, &consumed) >= 1 | |
4022 | && strlen (p) == (unsigned int)consumed) | |
4023 | { | |
4024 | fname = (char *)xmalloc (p - arg + 1); | |
4025 | memcpy (fname, arg, p - arg); | |
4026 | fname[p - arg] = '\0'; | |
4027 | /* Only accept non-stdin and existing FNAME parts, otherwise | |
4028 | try with the full name. */ | |
4029 | if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0) | |
4030 | { | |
4031 | free (fname); | |
4032 | fname = xstrdup (arg); | |
4033 | } | |
4034 | } | |
4035 | else | |
4036 | fname = xstrdup (arg); | |
4037 | ||
4038 | if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0) | |
4039 | perror_with_name (fname); | |
4040 | else | |
4041 | add_infile (arg, spec_lang); | |
4042 | ||
4043 | free (fname); | |
4044 | continue; | |
4045 | } | |
4046 | ||
4047 | read_cmdline_option (&global_options, &global_options_set, | |
4048 | decoded_options + j, UNKNOWN_LOCATION, | |
4049 | CL_DRIVER, &handlers, global_dc); | |
4050 | } | |
4051 | ||
4052 | if (output_file && strcmp (output_file, "-")) | |
4053 | { | |
4054 | int i; | |
4055 | for (i = 0; i < n_infiles; i++) | |
4056 | if ((!infiles[i].language || infiles[i].language[0] != '*') | |
4057 | && canonical_filename_eq (infiles[i].name, output_file)) | |
4058 | fatal_error ("input file %qs is the same as output file", | |
4059 | output_file); | |
4060 | } | |
4061 | ||
4062 | /* If -save-temps=obj and -o name, create the prefix to use for %b. | |
4063 | Otherwise just make -save-temps=obj the same as -save-temps=cwd. */ | |
4064 | if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL) | |
4065 | { | |
4066 | save_temps_length = strlen (save_temps_prefix); | |
4067 | temp = strrchr (lbasename (save_temps_prefix), '.'); | |
4068 | if (temp) | |
4069 | { | |
4070 | save_temps_length -= strlen (temp); | |
4071 | save_temps_prefix[save_temps_length] = '\0'; | |
4072 | } | |
4073 | ||
4074 | } | |
4075 | else if (save_temps_prefix != NULL) | |
4076 | { | |
4077 | free (save_temps_prefix); | |
4078 | save_temps_prefix = NULL; | |
4079 | } | |
4080 | ||
4081 | if (save_temps_flag && use_pipes) | |
4082 | { | |
4083 | /* -save-temps overrides -pipe, so that temp files are produced */ | |
4084 | if (save_temps_flag) | |
4085 | warning (0, "-pipe ignored because -save-temps specified"); | |
4086 | use_pipes = 0; | |
4087 | } | |
4088 | ||
4089 | if (!compare_debug) | |
4090 | { | |
4091 | const char *gcd = getenv ("GCC_COMPARE_DEBUG"); | |
4092 | ||
4093 | if (gcd && gcd[0] == '-') | |
4094 | { | |
4095 | compare_debug = 2; | |
4096 | compare_debug_opt = gcd; | |
4097 | } | |
4098 | else if (gcd && *gcd && strcmp (gcd, "0")) | |
4099 | { | |
4100 | compare_debug = 3; | |
4101 | compare_debug_opt = "-gtoggle"; | |
4102 | } | |
4103 | } | |
4104 | else if (compare_debug < 0) | |
4105 | { | |
4106 | compare_debug = 0; | |
4107 | gcc_assert (!compare_debug_opt); | |
4108 | } | |
4109 | ||
4110 | /* Set up the search paths. We add directories that we expect to | |
4111 | contain GNU Toolchain components before directories specified by | |
4112 | the machine description so that we will find GNU components (like | |
4113 | the GNU assembler) before those of the host system. */ | |
4114 | ||
4115 | /* If we don't know where the toolchain has been installed, use the | |
4116 | configured-in locations. */ | |
4117 | if (!gcc_exec_prefix) | |
4118 | { | |
4119 | #ifndef OS2 | |
4120 | add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC", | |
4121 | PREFIX_PRIORITY_LAST, 1, 0); | |
4122 | add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS", | |
4123 | PREFIX_PRIORITY_LAST, 2, 0); | |
4124 | add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS", | |
4125 | PREFIX_PRIORITY_LAST, 2, 0); | |
4126 | #endif | |
4127 | add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS", | |
4128 | PREFIX_PRIORITY_LAST, 1, 0); | |
4129 | } | |
4130 | ||
4131 | gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix)); | |
4132 | tooldir_prefix2 = concat (tooldir_base_prefix, spec_machine, | |
4133 | dir_separator_str, NULL); | |
4134 | ||
4135 | /* Look for tools relative to the location from which the driver is | |
4136 | running, or, if that is not available, the configured prefix. */ | |
4137 | tooldir_prefix | |
4138 | = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, | |
4139 | spec_machine, dir_separator_str, | |
4140 | spec_version, dir_separator_str, tooldir_prefix2, NULL); | |
4141 | free (tooldir_prefix2); | |
4142 | ||
4143 | add_prefix (&exec_prefixes, | |
4144 | concat (tooldir_prefix, "bin", dir_separator_str, NULL), | |
4145 | "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0); | |
4146 | add_prefix (&startfile_prefixes, | |
4147 | concat (tooldir_prefix, "lib", dir_separator_str, NULL), | |
4148 | "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1); | |
4149 | free (tooldir_prefix); | |
4150 | ||
4151 | #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS) | |
4152 | /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix, | |
4153 | then consider it to relocate with the rest of the GCC installation | |
4154 | if GCC_EXEC_PREFIX is set. | |
4155 | ``make_relative_prefix'' is not compiled for VMS, so don't call it. */ | |
4156 | if (target_system_root && !target_system_root_changed && gcc_exec_prefix) | |
4157 | { | |
4158 | char *tmp_prefix = get_relative_prefix (decoded_options[0].arg, | |
4159 | standard_bindir_prefix, | |
4160 | target_system_root); | |
4161 | if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0) | |
4162 | { | |
4163 | target_system_root = tmp_prefix; | |
4164 | target_system_root_changed = 1; | |
4165 | } | |
4166 | } | |
4167 | #endif | |
4168 | ||
4169 | /* More prefixes are enabled in main, after we read the specs file | |
4170 | and determine whether this is cross-compilation or not. */ | |
4171 | ||
4172 | if (n_infiles == last_language_n_infiles && spec_lang != 0) | |
4173 | warning (0, "%<-x %s%> after last input file has no effect", spec_lang); | |
4174 | ||
4175 | /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG | |
4176 | environment variable. */ | |
4177 | if (compare_debug == 2 || compare_debug == 3) | |
4178 | { | |
4179 | const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL); | |
4180 | save_switch (opt, 0, NULL, false, true); | |
4181 | compare_debug = 1; | |
4182 | } | |
4183 | ||
4184 | /* Ensure we only invoke each subprocess once. */ | |
4185 | if (print_subprocess_help || print_help_list || print_version) | |
4186 | { | |
4187 | n_infiles = 0; | |
4188 | ||
4189 | /* Create a dummy input file, so that we can pass | |
4190 | the help option on to the various sub-processes. */ | |
4191 | add_infile ("help-dummy", "c"); | |
4192 | } | |
4193 | ||
4194 | alloc_switch (); | |
4195 | switches[n_switches].part1 = 0; | |
4196 | alloc_infile (); | |
4197 | infiles[n_infiles].name = 0; | |
4198 | } | |
4199 | ||
4200 | /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS | |
4201 | and place that in the environment. */ | |
4202 | ||
4203 | static void | |
4204 | set_collect_gcc_options (void) | |
4205 | { | |
4206 | int i; | |
4207 | int first_time; | |
4208 | ||
4209 | /* Build COLLECT_GCC_OPTIONS to have all of the options specified to | |
4210 | the compiler. */ | |
4211 | obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", | |
4212 | sizeof ("COLLECT_GCC_OPTIONS=") - 1); | |
4213 | ||
4214 | first_time = TRUE; | |
4215 | for (i = 0; (int) i < n_switches; i++) | |
4216 | { | |
4217 | const char *const *args; | |
4218 | const char *p, *q; | |
4219 | if (!first_time) | |
4220 | obstack_grow (&collect_obstack, " ", 1); | |
4221 | ||
4222 | first_time = FALSE; | |
4223 | ||
4224 | /* Ignore elided switches. */ | |
4225 | if ((switches[i].live_cond | |
4226 | & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC)) | |
4227 | == SWITCH_IGNORE) | |
4228 | continue; | |
4229 | ||
4230 | obstack_grow (&collect_obstack, "'-", 2); | |
4231 | q = switches[i].part1; | |
4232 | while ((p = strchr (q, '\''))) | |
4233 | { | |
4234 | obstack_grow (&collect_obstack, q, p - q); | |
4235 | obstack_grow (&collect_obstack, "'\\''", 4); | |
4236 | q = ++p; | |
4237 | } | |
4238 | obstack_grow (&collect_obstack, q, strlen (q)); | |
4239 | obstack_grow (&collect_obstack, "'", 1); | |
4240 | ||
4241 | for (args = switches[i].args; args && *args; args++) | |
4242 | { | |
4243 | obstack_grow (&collect_obstack, " '", 2); | |
4244 | q = *args; | |
4245 | while ((p = strchr (q, '\''))) | |
4246 | { | |
4247 | obstack_grow (&collect_obstack, q, p - q); | |
4248 | obstack_grow (&collect_obstack, "'\\''", 4); | |
4249 | q = ++p; | |
4250 | } | |
4251 | obstack_grow (&collect_obstack, q, strlen (q)); | |
4252 | obstack_grow (&collect_obstack, "'", 1); | |
4253 | } | |
4254 | } | |
4255 | obstack_grow (&collect_obstack, "\0", 1); | |
4256 | xputenv (XOBFINISH (&collect_obstack, char *)); | |
4257 | } | |
4258 | \f | |
4259 | /* Process a spec string, accumulating and running commands. */ | |
4260 | ||
4261 | /* These variables describe the input file name. | |
4262 | input_file_number is the index on outfiles of this file, | |
4263 | so that the output file name can be stored for later use by %o. | |
4264 | input_basename is the start of the part of the input file | |
4265 | sans all directory names, and basename_length is the number | |
4266 | of characters starting there excluding the suffix .c or whatever. */ | |
4267 | ||
4268 | static const char *gcc_input_filename; | |
4269 | static int input_file_number; | |
4270 | size_t input_filename_length; | |
4271 | static int basename_length; | |
4272 | static int suffixed_basename_length; | |
4273 | static const char *input_basename; | |
4274 | static const char *input_suffix; | |
4275 | #ifndef HOST_LACKS_INODE_NUMBERS | |
4276 | static struct stat input_stat; | |
4277 | #endif | |
4278 | static int input_stat_set; | |
4279 | ||
4280 | /* The compiler used to process the current input file. */ | |
4281 | static struct compiler *input_file_compiler; | |
4282 | ||
4283 | /* These are variables used within do_spec and do_spec_1. */ | |
4284 | ||
4285 | /* Nonzero if an arg has been started and not yet terminated | |
4286 | (with space, tab or newline). */ | |
4287 | static int arg_going; | |
4288 | ||
4289 | /* Nonzero means %d or %g has been seen; the next arg to be terminated | |
4290 | is a temporary file name. */ | |
4291 | static int delete_this_arg; | |
4292 | ||
4293 | /* Nonzero means %w has been seen; the next arg to be terminated | |
4294 | is the output file name of this compilation. */ | |
4295 | static int this_is_output_file; | |
4296 | ||
4297 | /* Nonzero means %s has been seen; the next arg to be terminated | |
4298 | is the name of a library file and we should try the standard | |
4299 | search dirs for it. */ | |
4300 | static int this_is_library_file; | |
4301 | ||
4302 | /* Nonzero means %T has been seen; the next arg to be terminated | |
4303 | is the name of a linker script and we should try all of the | |
4304 | standard search dirs for it. If it is found insert a --script | |
4305 | command line switch and then substitute the full path in place, | |
4306 | otherwise generate an error message. */ | |
4307 | static int this_is_linker_script; | |
4308 | ||
4309 | /* Nonzero means that the input of this command is coming from a pipe. */ | |
4310 | static int input_from_pipe; | |
4311 | ||
4312 | /* Nonnull means substitute this for any suffix when outputting a switches | |
4313 | arguments. */ | |
4314 | static const char *suffix_subst; | |
4315 | ||
4316 | /* If there is an argument being accumulated, terminate it and store it. */ | |
4317 | ||
4318 | static void | |
4319 | end_going_arg (void) | |
4320 | { | |
4321 | if (arg_going) | |
4322 | { | |
4323 | const char *string; | |
4324 | ||
4325 | obstack_1grow (&obstack, 0); | |
4326 | string = XOBFINISH (&obstack, const char *); | |
4327 | if (this_is_library_file) | |
4328 | string = find_file (string); | |
4329 | if (this_is_linker_script) | |
4330 | { | |
4331 | char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true); | |
4332 | ||
4333 | if (full_script_path == NULL) | |
4334 | { | |
4335 | error ("unable to locate default linker script %qs in the library search paths", string); | |
4336 | /* Script was not found on search path. */ | |
4337 | return; | |
4338 | } | |
4339 | store_arg ("--script", false, false); | |
4340 | string = full_script_path; | |
4341 | } | |
4342 | store_arg (string, delete_this_arg, this_is_output_file); | |
4343 | if (this_is_output_file) | |
4344 | outfiles[input_file_number] = string; | |
4345 | arg_going = 0; | |
4346 | } | |
4347 | } | |
4348 | ||
4349 | ||
4350 | /* Parse the WRAPPER string which is a comma separated list of the command line | |
4351 | and insert them into the beginning of argbuf. */ | |
4352 | ||
4353 | static void | |
4354 | insert_wrapper (const char *wrapper) | |
4355 | { | |
4356 | int n = 0; | |
4357 | int i; | |
4358 | char *buf = xstrdup (wrapper); | |
4359 | char *p = buf; | |
4360 | unsigned int old_length = argbuf.length (); | |
4361 | ||
4362 | do | |
4363 | { | |
4364 | n++; | |
4365 | while (*p == ',') | |
4366 | p++; | |
4367 | } | |
4368 | while ((p = strchr (p, ',')) != NULL); | |
4369 | ||
4370 | argbuf.safe_grow (old_length + n); | |
4371 | memmove (argbuf.address () + n, | |
4372 | argbuf.address (), | |
4373 | old_length * sizeof (const_char_p)); | |
4374 | ||
4375 | i = 0; | |
4376 | p = buf; | |
4377 | do | |
4378 | { | |
4379 | while (*p == ',') | |
4380 | { | |
4381 | *p = 0; | |
4382 | p++; | |
4383 | } | |
4384 | argbuf[i] = p; | |
4385 | i++; | |
4386 | } | |
4387 | while ((p = strchr (p, ',')) != NULL); | |
4388 | gcc_assert (i == n); | |
4389 | } | |
4390 | ||
4391 | /* Process the spec SPEC and run the commands specified therein. | |
4392 | Returns 0 if the spec is successfully processed; -1 if failed. */ | |
4393 | ||
4394 | int | |
4395 | do_spec (const char *spec) | |
4396 | { | |
4397 | int value; | |
4398 | ||
4399 | value = do_spec_2 (spec); | |
4400 | ||
4401 | /* Force out any unfinished command. | |
4402 | If -pipe, this forces out the last command if it ended in `|'. */ | |
4403 | if (value == 0) | |
4404 | { | |
4405 | if (argbuf.length () > 0 | |
4406 | && !strcmp (argbuf.last (), "|")) | |
4407 | argbuf.pop (); | |
4408 | ||
4409 | set_collect_gcc_options (); | |
4410 | ||
4411 | if (argbuf.length () > 0) | |
4412 | value = execute (); | |
4413 | } | |
4414 | ||
4415 | return value; | |
4416 | } | |
4417 | ||
4418 | static int | |
4419 | do_spec_2 (const char *spec) | |
4420 | { | |
4421 | int result; | |
4422 | ||
4423 | clear_args (); | |
4424 | arg_going = 0; | |
4425 | delete_this_arg = 0; | |
4426 | this_is_output_file = 0; | |
4427 | this_is_library_file = 0; | |
4428 | this_is_linker_script = 0; | |
4429 | input_from_pipe = 0; | |
4430 | suffix_subst = NULL; | |
4431 | ||
4432 | result = do_spec_1 (spec, 0, NULL); | |
4433 | ||
4434 | end_going_arg (); | |
4435 | ||
4436 | return result; | |
4437 | } | |
4438 | ||
4439 | ||
4440 | /* Process the given spec string and add any new options to the end | |
4441 | of the switches/n_switches array. */ | |
4442 | ||
4443 | static void | |
4444 | do_option_spec (const char *name, const char *spec) | |
4445 | { | |
4446 | unsigned int i, value_count, value_len; | |
4447 | const char *p, *q, *value; | |
4448 | char *tmp_spec, *tmp_spec_p; | |
4449 | ||
4450 | if (configure_default_options[0].name == NULL) | |
4451 | return; | |
4452 | ||
4453 | for (i = 0; i < ARRAY_SIZE (configure_default_options); i++) | |
4454 | if (strcmp (configure_default_options[i].name, name) == 0) | |
4455 | break; | |
4456 | if (i == ARRAY_SIZE (configure_default_options)) | |
4457 | return; | |
4458 | ||
4459 | value = configure_default_options[i].value; | |
4460 | value_len = strlen (value); | |
4461 | ||
4462 | /* Compute the size of the final spec. */ | |
4463 | value_count = 0; | |
4464 | p = spec; | |
4465 | while ((p = strstr (p, "%(VALUE)")) != NULL) | |
4466 | { | |
4467 | p ++; | |
4468 | value_count ++; | |
4469 | } | |
4470 | ||
4471 | /* Replace each %(VALUE) by the specified value. */ | |
4472 | tmp_spec = (char *) alloca (strlen (spec) + 1 | |
4473 | + value_count * (value_len - strlen ("%(VALUE)"))); | |
4474 | tmp_spec_p = tmp_spec; | |
4475 | q = spec; | |
4476 | while ((p = strstr (q, "%(VALUE)")) != NULL) | |
4477 | { | |
4478 | memcpy (tmp_spec_p, q, p - q); | |
4479 | tmp_spec_p = tmp_spec_p + (p - q); | |
4480 | memcpy (tmp_spec_p, value, value_len); | |
4481 | tmp_spec_p += value_len; | |
4482 | q = p + strlen ("%(VALUE)"); | |
4483 | } | |
4484 | strcpy (tmp_spec_p, q); | |
4485 | ||
4486 | do_self_spec (tmp_spec); | |
4487 | } | |
4488 | ||
4489 | /* Process the given spec string and add any new options to the end | |
4490 | of the switches/n_switches array. */ | |
4491 | ||
4492 | static void | |
4493 | do_self_spec (const char *spec) | |
4494 | { | |
4495 | int i; | |
4496 | ||
4497 | do_spec_2 (spec); | |
4498 | do_spec_1 (" ", 0, NULL); | |
4499 | ||
4500 | /* Mark %<S switches processed by do_self_spec to be ignored permanently. | |
4501 | do_self_specs adds the replacements to switches array, so it shouldn't | |
4502 | be processed afterwards. */ | |
4503 | for (i = 0; i < n_switches; i++) | |
4504 | if ((switches[i].live_cond & SWITCH_IGNORE)) | |
4505 | switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY; | |
4506 | ||
4507 | if (argbuf.length () > 0) | |
4508 | { | |
4509 | const char **argbuf_copy; | |
4510 | struct cl_decoded_option *decoded_options; | |
4511 | struct cl_option_handlers handlers; | |
4512 | unsigned int decoded_options_count; | |
4513 | unsigned int j; | |
4514 | ||
4515 | /* Create a copy of argbuf with a dummy argv[0] entry for | |
4516 | decode_cmdline_options_to_array. */ | |
4517 | argbuf_copy = XNEWVEC (const char *, | |
4518 | argbuf.length () + 1); | |
4519 | argbuf_copy[0] = ""; | |
4520 | memcpy (argbuf_copy + 1, argbuf.address (), | |
4521 | argbuf.length () * sizeof (const char *)); | |
4522 | ||
4523 | decode_cmdline_options_to_array (argbuf.length () + 1, | |
4524 | argbuf_copy, | |
4525 | CL_DRIVER, &decoded_options, | |
4526 | &decoded_options_count); | |
4527 | free (argbuf_copy); | |
4528 | ||
4529 | set_option_handlers (&handlers); | |
4530 | ||
4531 | for (j = 1; j < decoded_options_count; j++) | |
4532 | { | |
4533 | switch (decoded_options[j].opt_index) | |
4534 | { | |
4535 | case OPT_SPECIAL_input_file: | |
4536 | /* Specs should only generate options, not input | |
4537 | files. */ | |
4538 | if (strcmp (decoded_options[j].arg, "-") != 0) | |
4539 | fatal_error ("switch %qs does not start with %<-%>", | |
4540 | decoded_options[j].arg); | |
4541 | else | |
4542 | fatal_error ("spec-generated switch is just %<-%>"); | |
4543 | break; | |
4544 | ||
4545 | case OPT_fcompare_debug_second: | |
4546 | case OPT_fcompare_debug: | |
4547 | case OPT_fcompare_debug_: | |
4548 | case OPT_o: | |
4549 | /* Avoid duplicate processing of some options from | |
4550 | compare-debug specs; just save them here. */ | |
4551 | save_switch (decoded_options[j].canonical_option[0], | |
4552 | (decoded_options[j].canonical_option_num_elements | |
4553 | - 1), | |
4554 | &decoded_options[j].canonical_option[1], false, true); | |
4555 | break; | |
4556 | ||
4557 | default: | |
4558 | read_cmdline_option (&global_options, &global_options_set, | |
4559 | decoded_options + j, UNKNOWN_LOCATION, | |
4560 | CL_DRIVER, &handlers, global_dc); | |
4561 | break; | |
4562 | } | |
4563 | } | |
4564 | ||
4565 | alloc_switch (); | |
4566 | switches[n_switches].part1 = 0; | |
4567 | } | |
4568 | } | |
4569 | ||
4570 | /* Callback for processing %D and %I specs. */ | |
4571 | ||
4572 | struct spec_path_info { | |
4573 | const char *option; | |
4574 | const char *append; | |
4575 | size_t append_len; | |
4576 | bool omit_relative; | |
4577 | bool separate_options; | |
4578 | }; | |
4579 | ||
4580 | static void * | |
4581 | spec_path (char *path, void *data) | |
4582 | { | |
4583 | struct spec_path_info *info = (struct spec_path_info *) data; | |
4584 | size_t len = 0; | |
4585 | char save = 0; | |
4586 | ||
4587 | if (info->omit_relative && !IS_ABSOLUTE_PATH (path)) | |
4588 | return NULL; | |
4589 | ||
4590 | if (info->append_len != 0) | |
4591 | { | |
4592 | len = strlen (path); | |
4593 | memcpy (path + len, info->append, info->append_len + 1); | |
4594 | } | |
4595 | ||
4596 | if (!is_directory (path, true)) | |
4597 | return NULL; | |
4598 | ||
4599 | do_spec_1 (info->option, 1, NULL); | |
4600 | if (info->separate_options) | |
4601 | do_spec_1 (" ", 0, NULL); | |
4602 | ||
4603 | if (info->append_len == 0) | |
4604 | { | |
4605 | len = strlen (path); | |
4606 | save = path[len - 1]; | |
4607 | if (IS_DIR_SEPARATOR (path[len - 1])) | |
4608 | path[len - 1] = '\0'; | |
4609 | } | |
4610 | ||
4611 | do_spec_1 (path, 1, NULL); | |
4612 | do_spec_1 (" ", 0, NULL); | |
4613 | ||
4614 | /* Must not damage the original path. */ | |
4615 | if (info->append_len == 0) | |
4616 | path[len - 1] = save; | |
4617 | ||
4618 | return NULL; | |
4619 | } | |
4620 | ||
4621 | /* Create a temporary FILE with the contents of ARGV. Add @FILE to the | |
4622 | argument list. */ | |
4623 | ||
4624 | static void | |
4625 | create_at_file (char **argv) | |
4626 | { | |
4627 | char *temp_file = make_temp_file (""); | |
4628 | char *at_argument = concat ("@", temp_file, NULL); | |
4629 | FILE *f = fopen (temp_file, "w"); | |
4630 | int status; | |
4631 | ||
4632 | if (f == NULL) | |
4633 | fatal_error ("could not open temporary response file %s", | |
4634 | temp_file); | |
4635 | ||
4636 | status = writeargv (argv, f); | |
4637 | ||
4638 | if (status) | |
4639 | fatal_error ("could not write to temporary response file %s", | |
4640 | temp_file); | |
4641 | ||
4642 | status = fclose (f); | |
4643 | ||
4644 | if (EOF == status) | |
4645 | fatal_error ("could not close temporary response file %s", | |
4646 | temp_file); | |
4647 | ||
4648 | store_arg (at_argument, 0, 0); | |
4649 | ||
4650 | record_temp_file (temp_file, !save_temps_flag, !save_temps_flag); | |
4651 | } | |
4652 | ||
4653 | /* True if we should compile INFILE. */ | |
4654 | ||
4655 | static bool | |
4656 | compile_input_file_p (struct infile *infile) | |
4657 | { | |
4658 | if ((!infile->language) || (infile->language[0] != '*')) | |
4659 | if (infile->incompiler == input_file_compiler) | |
4660 | return true; | |
4661 | return false; | |
4662 | } | |
4663 | ||
4664 | /* Process each member of VEC as a spec. */ | |
4665 | ||
4666 | static void | |
4667 | do_specs_vec (vec<char_p> vec) | |
4668 | { | |
4669 | unsigned ix; | |
4670 | char *opt; | |
4671 | ||
4672 | FOR_EACH_VEC_ELT (vec, ix, opt) | |
4673 | { | |
4674 | do_spec_1 (opt, 1, NULL); | |
4675 | /* Make each accumulated option a separate argument. */ | |
4676 | do_spec_1 (" ", 0, NULL); | |
4677 | } | |
4678 | } | |
4679 | ||
4680 | /* Process the sub-spec SPEC as a portion of a larger spec. | |
4681 | This is like processing a whole spec except that we do | |
4682 | not initialize at the beginning and we do not supply a | |
4683 | newline by default at the end. | |
4684 | INSWITCH nonzero means don't process %-sequences in SPEC; | |
4685 | in this case, % is treated as an ordinary character. | |
4686 | This is used while substituting switches. | |
4687 | INSWITCH nonzero also causes SPC not to terminate an argument. | |
4688 | ||
4689 | Value is zero unless a line was finished | |
4690 | and the command on that line reported an error. */ | |
4691 | ||
4692 | static int | |
4693 | do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) | |
4694 | { | |
4695 | const char *p = spec; | |
4696 | int c; | |
4697 | int i; | |
4698 | int value; | |
4699 | ||
4700 | /* If it's an empty string argument to a switch, keep it as is. */ | |
4701 | if (inswitch && !*p) | |
4702 | arg_going = 1; | |
4703 | ||
4704 | while ((c = *p++)) | |
4705 | /* If substituting a switch, treat all chars like letters. | |
4706 | Otherwise, NL, SPC, TAB and % are special. */ | |
4707 | switch (inswitch ? 'a' : c) | |
4708 | { | |
4709 | case '\n': | |
4710 | end_going_arg (); | |
4711 | ||
4712 | if (argbuf.length () > 0 | |
4713 | && !strcmp (argbuf.last (), "|")) | |
4714 | { | |
4715 | /* A `|' before the newline means use a pipe here, | |
4716 | but only if -pipe was specified. | |
4717 | Otherwise, execute now and don't pass the `|' as an arg. */ | |
4718 | if (use_pipes) | |
4719 | { | |
4720 | input_from_pipe = 1; | |
4721 | break; | |
4722 | } | |
4723 | else | |
4724 | argbuf.pop (); | |
4725 | } | |
4726 | ||
4727 | set_collect_gcc_options (); | |
4728 | ||
4729 | if (argbuf.length () > 0) | |
4730 | { | |
4731 | value = execute (); | |
4732 | if (value) | |
4733 | return value; | |
4734 | } | |
4735 | /* Reinitialize for a new command, and for a new argument. */ | |
4736 | clear_args (); | |
4737 | arg_going = 0; | |
4738 | delete_this_arg = 0; | |
4739 | this_is_output_file = 0; | |
4740 | this_is_library_file = 0; | |
4741 | this_is_linker_script = 0; | |
4742 | input_from_pipe = 0; | |
4743 | break; | |
4744 | ||
4745 | case '|': | |
4746 | end_going_arg (); | |
4747 | ||
4748 | /* Use pipe */ | |
4749 | obstack_1grow (&obstack, c); | |
4750 | arg_going = 1; | |
4751 | break; | |
4752 | ||
4753 | case '\t': | |
4754 | case ' ': | |
4755 | end_going_arg (); | |
4756 | ||
4757 | /* Reinitialize for a new argument. */ | |
4758 | delete_this_arg = 0; | |
4759 | this_is_output_file = 0; | |
4760 | this_is_library_file = 0; | |
4761 | this_is_linker_script = 0; | |
4762 | break; | |
4763 | ||
4764 | case '%': | |
4765 | switch (c = *p++) | |
4766 | { | |
4767 | case 0: | |
4768 | fatal_error ("spec %qs invalid", spec); | |
4769 | ||
4770 | case 'b': | |
4771 | if (save_temps_length) | |
4772 | obstack_grow (&obstack, save_temps_prefix, save_temps_length); | |
4773 | else | |
4774 | obstack_grow (&obstack, input_basename, basename_length); | |
4775 | if (compare_debug < 0) | |
4776 | obstack_grow (&obstack, ".gk", 3); | |
4777 | arg_going = 1; | |
4778 | break; | |
4779 | ||
4780 | case 'B': | |
4781 | if (save_temps_length) | |
4782 | obstack_grow (&obstack, save_temps_prefix, save_temps_length); | |
4783 | else | |
4784 | obstack_grow (&obstack, input_basename, suffixed_basename_length); | |
4785 | if (compare_debug < 0) | |
4786 | obstack_grow (&obstack, ".gk", 3); | |
4787 | arg_going = 1; | |
4788 | break; | |
4789 | ||
4790 | case 'd': | |
4791 | delete_this_arg = 2; | |
4792 | break; | |
4793 | ||
4794 | /* Dump out the directories specified with LIBRARY_PATH, | |
4795 | followed by the absolute directories | |
4796 | that we search for startfiles. */ | |
4797 | case 'D': | |
4798 | { | |
4799 | struct spec_path_info info; | |
4800 | ||
4801 | info.option = "-L"; | |
4802 | info.append_len = 0; | |
4803 | #ifdef RELATIVE_PREFIX_NOT_LINKDIR | |
4804 | /* Used on systems which record the specified -L dirs | |
4805 | and use them to search for dynamic linking. | |
4806 | Relative directories always come from -B, | |
4807 | and it is better not to use them for searching | |
4808 | at run time. In particular, stage1 loses. */ | |
4809 | info.omit_relative = true; | |
4810 | #else | |
4811 | info.omit_relative = false; | |
4812 | #endif | |
4813 | info.separate_options = false; | |
4814 | ||
4815 | for_each_path (&startfile_prefixes, true, 0, spec_path, &info); | |
4816 | } | |
4817 | break; | |
4818 | ||
4819 | case 'e': | |
4820 | /* %efoo means report an error with `foo' as error message | |
4821 | and don't execute any more commands for this file. */ | |
4822 | { | |
4823 | const char *q = p; | |
4824 | char *buf; | |
4825 | while (*p != 0 && *p != '\n') | |
4826 | p++; | |
4827 | buf = (char *) alloca (p - q + 1); | |
4828 | strncpy (buf, q, p - q); | |
4829 | buf[p - q] = 0; | |
4830 | error ("%s", _(buf)); | |
4831 | return -1; | |
4832 | } | |
4833 | break; | |
4834 | case 'n': | |
4835 | /* %nfoo means report a notice with `foo' on stderr. */ | |
4836 | { | |
4837 | const char *q = p; | |
4838 | char *buf; | |
4839 | while (*p != 0 && *p != '\n') | |
4840 | p++; | |
4841 | buf = (char *) alloca (p - q + 1); | |
4842 | strncpy (buf, q, p - q); | |
4843 | buf[p - q] = 0; | |
4844 | inform (0, "%s", _(buf)); | |
4845 | if (*p) | |
4846 | p++; | |
4847 | } | |
4848 | break; | |
4849 | ||
4850 | case 'j': | |
4851 | { | |
4852 | struct stat st; | |
4853 | ||
4854 | /* If save_temps_flag is off, and the HOST_BIT_BUCKET is | |
4855 | defined, and it is not a directory, and it is | |
4856 | writable, use it. Otherwise, treat this like any | |
4857 | other temporary file. */ | |
4858 | ||
4859 | if ((!save_temps_flag) | |
4860 | && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode)) | |
4861 | && (access (HOST_BIT_BUCKET, W_OK) == 0)) | |
4862 | { | |
4863 | obstack_grow (&obstack, HOST_BIT_BUCKET, | |
4864 | strlen (HOST_BIT_BUCKET)); | |
4865 | delete_this_arg = 0; | |
4866 | arg_going = 1; | |
4867 | break; | |
4868 | } | |
4869 | } | |
4870 | goto create_temp_file; | |
4871 | case '|': | |
4872 | if (use_pipes) | |
4873 | { | |
4874 | obstack_1grow (&obstack, '-'); | |
4875 | delete_this_arg = 0; | |
4876 | arg_going = 1; | |
4877 | ||
4878 | /* consume suffix */ | |
4879 | while (*p == '.' || ISALNUM ((unsigned char) *p)) | |
4880 | p++; | |
4881 | if (p[0] == '%' && p[1] == 'O') | |
4882 | p += 2; | |
4883 | ||
4884 | break; | |
4885 | } | |
4886 | goto create_temp_file; | |
4887 | case 'm': | |
4888 | if (use_pipes) | |
4889 | { | |
4890 | /* consume suffix */ | |
4891 | while (*p == '.' || ISALNUM ((unsigned char) *p)) | |
4892 | p++; | |
4893 | if (p[0] == '%' && p[1] == 'O') | |
4894 | p += 2; | |
4895 | ||
4896 | break; | |
4897 | } | |
4898 | goto create_temp_file; | |
4899 | case 'g': | |
4900 | case 'u': | |
4901 | case 'U': | |
4902 | create_temp_file: | |
4903 | { | |
4904 | struct temp_name *t; | |
4905 | int suffix_length; | |
4906 | const char *suffix = p; | |
4907 | char *saved_suffix = NULL; | |
4908 | ||
4909 | while (*p == '.' || ISALNUM ((unsigned char) *p)) | |
4910 | p++; | |
4911 | suffix_length = p - suffix; | |
4912 | if (p[0] == '%' && p[1] == 'O') | |
4913 | { | |
4914 | p += 2; | |
4915 | /* We don't support extra suffix characters after %O. */ | |
4916 | if (*p == '.' || ISALNUM ((unsigned char) *p)) | |
4917 | fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p); | |
4918 | if (suffix_length == 0) | |
4919 | suffix = TARGET_OBJECT_SUFFIX; | |
4920 | else | |
4921 | { | |
4922 | saved_suffix | |
4923 | = XNEWVEC (char, suffix_length | |
4924 | + strlen (TARGET_OBJECT_SUFFIX) + 1); | |
4925 | strncpy (saved_suffix, suffix, suffix_length); | |
4926 | strcpy (saved_suffix + suffix_length, | |
4927 | TARGET_OBJECT_SUFFIX); | |
4928 | } | |
4929 | suffix_length += strlen (TARGET_OBJECT_SUFFIX); | |
4930 | } | |
4931 | ||
4932 | if (compare_debug < 0) | |
4933 | { | |
4934 | suffix = concat (".gk", suffix, NULL); | |
4935 | suffix_length += 3; | |
4936 | } | |
4937 | ||
4938 | /* If -save-temps=obj and -o were specified, use that for the | |
4939 | temp file. */ | |
4940 | if (save_temps_length) | |
4941 | { | |
4942 | char *tmp; | |
4943 | temp_filename_length | |
4944 | = save_temps_length + suffix_length + 1; | |
4945 | tmp = (char *) alloca (temp_filename_length); | |
4946 | memcpy (tmp, save_temps_prefix, save_temps_length); | |
4947 | memcpy (tmp + save_temps_length, suffix, suffix_length); | |
4948 | tmp[save_temps_length + suffix_length] = '\0'; | |
4949 | temp_filename = save_string (tmp, save_temps_length | |
4950 | + suffix_length); | |
4951 | obstack_grow (&obstack, temp_filename, | |
4952 | temp_filename_length); | |
4953 | arg_going = 1; | |
4954 | delete_this_arg = 0; | |
4955 | break; | |
4956 | } | |
4957 | ||
4958 | /* If the gcc_input_filename has the same suffix specified | |
4959 | for the %g, %u, or %U, and -save-temps is specified, | |
4960 | we could end up using that file as an intermediate | |
4961 | thus clobbering the user's source file (.e.g., | |
4962 | gcc -save-temps foo.s would clobber foo.s with the | |
4963 | output of cpp0). So check for this condition and | |
4964 | generate a temp file as the intermediate. */ | |
4965 | ||
4966 | if (save_temps_flag) | |
4967 | { | |
4968 | char *tmp; | |
4969 | temp_filename_length = basename_length + suffix_length + 1; | |
4970 | tmp = (char *) alloca (temp_filename_length); | |
4971 | memcpy (tmp, input_basename, basename_length); | |
4972 | memcpy (tmp + basename_length, suffix, suffix_length); | |
4973 | tmp[basename_length + suffix_length] = '\0'; | |
4974 | temp_filename = tmp; | |
4975 | ||
4976 | if (filename_cmp (temp_filename, gcc_input_filename) != 0) | |
4977 | { | |
4978 | #ifndef HOST_LACKS_INODE_NUMBERS | |
4979 | struct stat st_temp; | |
4980 | ||
4981 | /* Note, set_input() resets input_stat_set to 0. */ | |
4982 | if (input_stat_set == 0) | |
4983 | { | |
4984 | input_stat_set = stat (gcc_input_filename, | |
4985 | &input_stat); | |
4986 | if (input_stat_set >= 0) | |
4987 | input_stat_set = 1; | |
4988 | } | |
4989 | ||
4990 | /* If we have the stat for the gcc_input_filename | |
4991 | and we can do the stat for the temp_filename | |
4992 | then the they could still refer to the same | |
4993 | file if st_dev/st_ino's are the same. */ | |
4994 | if (input_stat_set != 1 | |
4995 | || stat (temp_filename, &st_temp) < 0 | |
4996 | || input_stat.st_dev != st_temp.st_dev | |
4997 | || input_stat.st_ino != st_temp.st_ino) | |
4998 | #else | |
4999 | /* Just compare canonical pathnames. */ | |
5000 | char* input_realname = lrealpath (gcc_input_filename); | |
5001 | char* temp_realname = lrealpath (temp_filename); | |
5002 | bool files_differ = filename_cmp (input_realname, temp_realname); | |
5003 | free (input_realname); | |
5004 | free (temp_realname); | |
5005 | if (files_differ) | |
5006 | #endif | |
5007 | { | |
5008 | temp_filename = save_string (temp_filename, | |
5009 | temp_filename_length + 1); | |
5010 | obstack_grow (&obstack, temp_filename, | |
5011 | temp_filename_length); | |
5012 | arg_going = 1; | |
5013 | delete_this_arg = 0; | |
5014 | break; | |
5015 | } | |
5016 | } | |
5017 | } | |
5018 | ||
5019 | /* See if we already have an association of %g/%u/%U and | |
5020 | suffix. */ | |
5021 | for (t = temp_names; t; t = t->next) | |
5022 | if (t->length == suffix_length | |
5023 | && strncmp (t->suffix, suffix, suffix_length) == 0 | |
5024 | && t->unique == (c == 'u' || c == 'U' || c == 'j')) | |
5025 | break; | |
5026 | ||
5027 | /* Make a new association if needed. %u and %j | |
5028 | require one. */ | |
5029 | if (t == 0 || c == 'u' || c == 'j') | |
5030 | { | |
5031 | if (t == 0) | |
5032 | { | |
5033 | t = XNEW (struct temp_name); | |
5034 | t->next = temp_names; | |
5035 | temp_names = t; | |
5036 | } | |
5037 | t->length = suffix_length; | |
5038 | if (saved_suffix) | |
5039 | { | |
5040 | t->suffix = saved_suffix; | |
5041 | saved_suffix = NULL; | |
5042 | } | |
5043 | else | |
5044 | t->suffix = save_string (suffix, suffix_length); | |
5045 | t->unique = (c == 'u' || c == 'U' || c == 'j'); | |
5046 | temp_filename = make_temp_file (t->suffix); | |
5047 | temp_filename_length = strlen (temp_filename); | |
5048 | t->filename = temp_filename; | |
5049 | t->filename_length = temp_filename_length; | |
5050 | } | |
5051 | ||
5052 | free (saved_suffix); | |
5053 | ||
5054 | obstack_grow (&obstack, t->filename, t->filename_length); | |
5055 | delete_this_arg = 1; | |
5056 | } | |
5057 | arg_going = 1; | |
5058 | break; | |
5059 | ||
5060 | case 'i': | |
5061 | if (combine_inputs) | |
5062 | { | |
5063 | if (at_file_supplied) | |
5064 | { | |
5065 | /* We are going to expand `%i' to `@FILE', where FILE | |
5066 | is a newly-created temporary filename. The filenames | |
5067 | that would usually be expanded in place of %o will be | |
5068 | written to the temporary file. */ | |
5069 | char **argv; | |
5070 | int n_files = 0; | |
5071 | int j; | |
5072 | ||
5073 | for (i = 0; i < n_infiles; i++) | |
5074 | if (compile_input_file_p (&infiles[i])) | |
5075 | n_files++; | |
5076 | ||
5077 | argv = (char **) alloca (sizeof (char *) * (n_files + 1)); | |
5078 | ||
5079 | /* Copy the strings over. */ | |
5080 | for (i = 0, j = 0; i < n_infiles; i++) | |
5081 | if (compile_input_file_p (&infiles[i])) | |
5082 | { | |
5083 | argv[j] = CONST_CAST (char *, infiles[i].name); | |
5084 | infiles[i].compiled = true; | |
5085 | j++; | |
5086 | } | |
5087 | argv[j] = NULL; | |
5088 | ||
5089 | create_at_file (argv); | |
5090 | } | |
5091 | else | |
5092 | for (i = 0; (int) i < n_infiles; i++) | |
5093 | if (compile_input_file_p (&infiles[i])) | |
5094 | { | |
5095 | store_arg (infiles[i].name, 0, 0); | |
5096 | infiles[i].compiled = true; | |
5097 | } | |
5098 | } | |
5099 | else | |
5100 | { | |
5101 | obstack_grow (&obstack, gcc_input_filename, | |
5102 | input_filename_length); | |
5103 | arg_going = 1; | |
5104 | } | |
5105 | break; | |
5106 | ||
5107 | case 'I': | |
5108 | { | |
5109 | struct spec_path_info info; | |
5110 | ||
5111 | if (multilib_dir) | |
5112 | { | |
5113 | do_spec_1 ("-imultilib", 1, NULL); | |
5114 | /* Make this a separate argument. */ | |
5115 | do_spec_1 (" ", 0, NULL); | |
5116 | do_spec_1 (multilib_dir, 1, NULL); | |
5117 | do_spec_1 (" ", 0, NULL); | |
5118 | } | |
5119 | ||
5120 | if (multiarch_dir) | |
5121 | { | |
5122 | do_spec_1 ("-imultiarch", 1, NULL); | |
5123 | /* Make this a separate argument. */ | |
5124 | do_spec_1 (" ", 0, NULL); | |
5125 | do_spec_1 (multiarch_dir, 1, NULL); | |
5126 | do_spec_1 (" ", 0, NULL); | |
5127 | } | |
5128 | ||
5129 | if (gcc_exec_prefix) | |
5130 | { | |
5131 | do_spec_1 ("-iprefix", 1, NULL); | |
5132 | /* Make this a separate argument. */ | |
5133 | do_spec_1 (" ", 0, NULL); | |
5134 | do_spec_1 (gcc_exec_prefix, 1, NULL); | |
5135 | do_spec_1 (" ", 0, NULL); | |
5136 | } | |
5137 | ||
5138 | if (target_system_root_changed || | |
5139 | (target_system_root && target_sysroot_hdrs_suffix)) | |
5140 | { | |
5141 | do_spec_1 ("-isysroot", 1, NULL); | |
5142 | /* Make this a separate argument. */ | |
5143 | do_spec_1 (" ", 0, NULL); | |
5144 | do_spec_1 (target_system_root, 1, NULL); | |
5145 | if (target_sysroot_hdrs_suffix) | |
5146 | do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL); | |
5147 | do_spec_1 (" ", 0, NULL); | |
5148 | } | |
5149 | ||
5150 | info.option = "-isystem"; | |
5151 | info.append = "include"; | |
5152 | info.append_len = strlen (info.append); | |
5153 | info.omit_relative = false; | |
5154 | info.separate_options = true; | |
5155 | ||
5156 | for_each_path (&include_prefixes, false, info.append_len, | |
5157 | spec_path, &info); | |
5158 | ||
5159 | info.append = "include-fixed"; | |
5160 | if (*sysroot_hdrs_suffix_spec) | |
5161 | info.append = concat (info.append, dir_separator_str, | |
5162 | multilib_dir, NULL); | |
5163 | info.append_len = strlen (info.append); | |
5164 | for_each_path (&include_prefixes, false, info.append_len, | |
5165 | spec_path, &info); | |
5166 | } | |
5167 | break; | |
5168 | ||
5169 | case 'o': | |
5170 | { | |
5171 | int max = n_infiles; | |
5172 | max += lang_specific_extra_outfiles; | |
5173 | ||
5174 | if (HAVE_GNU_LD && at_file_supplied) | |
5175 | { | |
5176 | /* We are going to expand `%o' to `@FILE', where FILE | |
5177 | is a newly-created temporary filename. The filenames | |
5178 | that would usually be expanded in place of %o will be | |
5179 | written to the temporary file. */ | |
5180 | ||
5181 | char **argv; | |
5182 | int n_files, j; | |
5183 | ||
5184 | /* Convert OUTFILES into a form suitable for writeargv. */ | |
5185 | ||
5186 | /* Determine how many are non-NULL. */ | |
5187 | for (n_files = 0, i = 0; i < max; i++) | |
5188 | n_files += outfiles[i] != NULL; | |
5189 | ||
5190 | argv = (char **) alloca (sizeof (char *) * (n_files + 1)); | |
5191 | ||
5192 | /* Copy the strings over. */ | |
5193 | for (i = 0, j = 0; i < max; i++) | |
5194 | if (outfiles[i]) | |
5195 | { | |
5196 | argv[j] = CONST_CAST (char *, outfiles[i]); | |
5197 | j++; | |
5198 | } | |
5199 | argv[j] = NULL; | |
5200 | ||
5201 | create_at_file (argv); | |
5202 | } | |
5203 | else | |
5204 | for (i = 0; i < max; i++) | |
5205 | if (outfiles[i]) | |
5206 | store_arg (outfiles[i], 0, 0); | |
5207 | break; | |
5208 | } | |
5209 | ||
5210 | case 'O': | |
5211 | obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); | |
5212 | arg_going = 1; | |
5213 | break; | |
5214 | ||
5215 | case 's': | |
5216 | this_is_library_file = 1; | |
5217 | break; | |
5218 | ||
5219 | case 'T': | |
5220 | this_is_linker_script = 1; | |
5221 | break; | |
5222 | ||
5223 | case 'V': | |
5224 | outfiles[input_file_number] = NULL; | |
5225 | break; | |
5226 | ||
5227 | case 'w': | |
5228 | this_is_output_file = 1; | |
5229 | break; | |
5230 | ||
5231 | case 'W': | |
5232 | { | |
5233 | unsigned int cur_index = argbuf.length (); | |
5234 | /* Handle the {...} following the %W. */ | |
5235 | if (*p != '{') | |
5236 | fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p); | |
5237 | p = handle_braces (p + 1); | |
5238 | if (p == 0) | |
5239 | return -1; | |
5240 | end_going_arg (); | |
5241 | /* If any args were output, mark the last one for deletion | |
5242 | on failure. */ | |
5243 | if (argbuf.length () != cur_index) | |
5244 | record_temp_file (argbuf.last (), 0, 1); | |
5245 | break; | |
5246 | } | |
5247 | ||
5248 | /* %x{OPTION} records OPTION for %X to output. */ | |
5249 | case 'x': | |
5250 | { | |
5251 | const char *p1 = p; | |
5252 | char *string; | |
5253 | char *opt; | |
5254 | unsigned ix; | |
5255 | ||
5256 | /* Skip past the option value and make a copy. */ | |
5257 | if (*p != '{') | |
5258 | fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p); | |
5259 | while (*p++ != '}') | |
5260 | ; | |
5261 | string = save_string (p1 + 1, p - p1 - 2); | |
5262 | ||
5263 | /* See if we already recorded this option. */ | |
5264 | FOR_EACH_VEC_ELT (linker_options, ix, opt) | |
5265 | if (! strcmp (string, opt)) | |
5266 | { | |
5267 | free (string); | |
5268 | return 0; | |
5269 | } | |
5270 | ||
5271 | /* This option is new; add it. */ | |
5272 | add_linker_option (string, strlen (string)); | |
5273 | free (string); | |
5274 | } | |
5275 | break; | |
5276 | ||
5277 | /* Dump out the options accumulated previously using %x. */ | |
5278 | case 'X': | |
5279 | do_specs_vec (linker_options); | |
5280 | break; | |
5281 | ||
5282 | /* Dump out the options accumulated previously using -Wa,. */ | |
5283 | case 'Y': | |
5284 | do_specs_vec (assembler_options); | |
5285 | break; | |
5286 | ||
5287 | /* Dump out the options accumulated previously using -Wp,. */ | |
5288 | case 'Z': | |
5289 | do_specs_vec (preprocessor_options); | |
5290 | break; | |
5291 | ||
5292 | /* Here are digits and numbers that just process | |
5293 | a certain constant string as a spec. */ | |
5294 | ||
5295 | case '1': | |
5296 | value = do_spec_1 (cc1_spec, 0, NULL); | |
5297 | if (value != 0) | |
5298 | return value; | |
5299 | break; | |
5300 | ||
5301 | case '2': | |
5302 | value = do_spec_1 (cc1plus_spec, 0, NULL); | |
5303 | if (value != 0) | |
5304 | return value; | |
5305 | break; | |
5306 | ||
5307 | case 'a': | |
5308 | value = do_spec_1 (asm_spec, 0, NULL); | |
5309 | if (value != 0) | |
5310 | return value; | |
5311 | break; | |
5312 | ||
5313 | case 'A': | |
5314 | value = do_spec_1 (asm_final_spec, 0, NULL); | |
5315 | if (value != 0) | |
5316 | return value; | |
5317 | break; | |
5318 | ||
5319 | case 'C': | |
5320 | { | |
5321 | const char *const spec | |
5322 | = (input_file_compiler->cpp_spec | |
5323 | ? input_file_compiler->cpp_spec | |
5324 | : cpp_spec); | |
5325 | value = do_spec_1 (spec, 0, NULL); | |
5326 | if (value != 0) | |
5327 | return value; | |
5328 | } | |
5329 | break; | |
5330 | ||
5331 | case 'E': | |
5332 | value = do_spec_1 (endfile_spec, 0, NULL); | |
5333 | if (value != 0) | |
5334 | return value; | |
5335 | break; | |
5336 | ||
5337 | case 'l': | |
5338 | value = do_spec_1 (link_spec, 0, NULL); | |
5339 | if (value != 0) | |
5340 | return value; | |
5341 | break; | |
5342 | ||
5343 | case 'L': | |
5344 | value = do_spec_1 (lib_spec, 0, NULL); | |
5345 | if (value != 0) | |
5346 | return value; | |
5347 | break; | |
5348 | ||
5349 | case 'M': | |
5350 | if (multilib_os_dir == NULL) | |
5351 | obstack_1grow (&obstack, '.'); | |
5352 | else | |
5353 | obstack_grow (&obstack, multilib_os_dir, | |
5354 | strlen (multilib_os_dir)); | |
5355 | break; | |
5356 | ||
5357 | case 'G': | |
5358 | value = do_spec_1 (libgcc_spec, 0, NULL); | |
5359 | if (value != 0) | |
5360 | return value; | |
5361 | break; | |
5362 | ||
5363 | case 'R': | |
5364 | /* We assume there is a directory | |
5365 | separator at the end of this string. */ | |
5366 | if (target_system_root) | |
5367 | { | |
5368 | obstack_grow (&obstack, target_system_root, | |
5369 | strlen (target_system_root)); | |
5370 | if (target_sysroot_suffix) | |
5371 | obstack_grow (&obstack, target_sysroot_suffix, | |
5372 | strlen (target_sysroot_suffix)); | |
5373 | } | |
5374 | break; | |
5375 | ||
5376 | case 'S': | |
5377 | value = do_spec_1 (startfile_spec, 0, NULL); | |
5378 | if (value != 0) | |
5379 | return value; | |
5380 | break; | |
5381 | ||
5382 | /* Here we define characters other than letters and digits. */ | |
5383 | ||
5384 | case '{': | |
5385 | p = handle_braces (p); | |
5386 | if (p == 0) | |
5387 | return -1; | |
5388 | break; | |
5389 | ||
5390 | case ':': | |
5391 | p = handle_spec_function (p, NULL); | |
5392 | if (p == 0) | |
5393 | return -1; | |
5394 | break; | |
5395 | ||
5396 | case '%': | |
5397 | obstack_1grow (&obstack, '%'); | |
5398 | break; | |
5399 | ||
5400 | case '.': | |
5401 | { | |
5402 | unsigned len = 0; | |
5403 | ||
5404 | while (p[len] && p[len] != ' ' && p[len] != '%') | |
5405 | len++; | |
5406 | suffix_subst = save_string (p - 1, len + 1); | |
5407 | p += len; | |
5408 | } | |
5409 | break; | |
5410 | ||
5411 | /* Henceforth ignore the option(s) matching the pattern | |
5412 | after the %<. */ | |
5413 | case '<': | |
5414 | case '>': | |
5415 | { | |
5416 | unsigned len = 0; | |
5417 | int have_wildcard = 0; | |
5418 | int i; | |
5419 | int switch_option; | |
5420 | ||
5421 | if (c == '>') | |
5422 | switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC; | |
5423 | else | |
5424 | switch_option = SWITCH_IGNORE; | |
5425 | ||
5426 | while (p[len] && p[len] != ' ' && p[len] != '\t') | |
5427 | len++; | |
5428 | ||
5429 | if (p[len-1] == '*') | |
5430 | have_wildcard = 1; | |
5431 | ||
5432 | for (i = 0; i < n_switches; i++) | |
5433 | if (!strncmp (switches[i].part1, p, len - have_wildcard) | |
5434 | && (have_wildcard || switches[i].part1[len] == '\0')) | |
5435 | { | |
5436 | switches[i].live_cond |= switch_option; | |
5437 | /* User switch be validated from validate_all_switches. | |
5438 | when the definition is seen from the spec file. | |
5439 | If not defined anywhere, will be rejected. */ | |
5440 | if (switches[i].known) | |
5441 | switches[i].validated = true; | |
5442 | } | |
5443 | ||
5444 | p += len; | |
5445 | } | |
5446 | break; | |
5447 | ||
5448 | case '*': | |
5449 | if (soft_matched_part) | |
5450 | { | |
5451 | if (soft_matched_part[0]) | |
5452 | do_spec_1 (soft_matched_part, 1, NULL); | |
5453 | /* Only insert a space after the substitution if it is at the | |
5454 | end of the current sequence. So if: | |
5455 | ||
5456 | "%{foo=*:bar%*}%{foo=*:one%*two}" | |
5457 | ||
5458 | matches -foo=hello then it will produce: | |
5459 | ||
5460 | barhello onehellotwo | |
5461 | */ | |
5462 | if (*p == 0 || *p == '}') | |
5463 | do_spec_1 (" ", 0, NULL); | |
5464 | } | |
5465 | else | |
5466 | /* Catch the case where a spec string contains something like | |
5467 | '%{foo:%*}'. i.e. there is no * in the pattern on the left | |
5468 | hand side of the :. */ | |
5469 | error ("spec failure: %<%%*%> has not been initialized by pattern match"); | |
5470 | break; | |
5471 | ||
5472 | /* Process a string found as the value of a spec given by name. | |
5473 | This feature allows individual machine descriptions | |
5474 | to add and use their own specs. */ | |
5475 | case '(': | |
5476 | { | |
5477 | const char *name = p; | |
5478 | struct spec_list *sl; | |
5479 | int len; | |
5480 | ||
5481 | /* The string after the S/P is the name of a spec that is to be | |
5482 | processed. */ | |
5483 | while (*p && *p != ')') | |
5484 | p++; | |
5485 | ||
5486 | /* See if it's in the list. */ | |
5487 | for (len = p - name, sl = specs; sl; sl = sl->next) | |
5488 | if (sl->name_len == len && !strncmp (sl->name, name, len)) | |
5489 | { | |
5490 | name = *(sl->ptr_spec); | |
5491 | #ifdef DEBUG_SPECS | |
5492 | fnotice (stderr, "Processing spec (%s), which is '%s'\n", | |
5493 | sl->name, name); | |
5494 | #endif | |
5495 | break; | |
5496 | } | |
5497 | ||
5498 | if (sl) | |
5499 | { | |
5500 | value = do_spec_1 (name, 0, NULL); | |
5501 | if (value != 0) | |
5502 | return value; | |
5503 | } | |
5504 | ||
5505 | /* Discard the closing paren. */ | |
5506 | if (*p) | |
5507 | p++; | |
5508 | } | |
5509 | break; | |
5510 | ||
5511 | default: | |
5512 | error ("spec failure: unrecognized spec option %qc", c); | |
5513 | break; | |
5514 | } | |
5515 | break; | |
5516 | ||
5517 | case '\\': | |
5518 | /* Backslash: treat next character as ordinary. */ | |
5519 | c = *p++; | |
5520 | ||
5521 | /* Fall through. */ | |
5522 | default: | |
5523 | /* Ordinary character: put it into the current argument. */ | |
5524 | obstack_1grow (&obstack, c); | |
5525 | arg_going = 1; | |
5526 | } | |
5527 | ||
5528 | /* End of string. If we are processing a spec function, we need to | |
5529 | end any pending argument. */ | |
5530 | if (processing_spec_function) | |
5531 | end_going_arg (); | |
5532 | ||
5533 | return 0; | |
5534 | } | |
5535 | ||
5536 | /* Look up a spec function. */ | |
5537 | ||
5538 | static const struct spec_function * | |
5539 | lookup_spec_function (const char *name) | |
5540 | { | |
5541 | const struct spec_function *sf; | |
5542 | ||
5543 | for (sf = static_spec_functions; sf->name != NULL; sf++) | |
5544 | if (strcmp (sf->name, name) == 0) | |
5545 | return sf; | |
5546 | ||
5547 | return NULL; | |
5548 | } | |
5549 | ||
5550 | /* Evaluate a spec function. */ | |
5551 | ||
5552 | static const char * | |
5553 | eval_spec_function (const char *func, const char *args) | |
5554 | { | |
5555 | const struct spec_function *sf; | |
5556 | const char *funcval; | |
5557 | ||
5558 | /* Saved spec processing context. */ | |
5559 | vec<const_char_p> save_argbuf; | |
5560 | ||
5561 | int save_arg_going; | |
5562 | int save_delete_this_arg; | |
5563 | int save_this_is_output_file; | |
5564 | int save_this_is_library_file; | |
5565 | int save_input_from_pipe; | |
5566 | int save_this_is_linker_script; | |
5567 | const char *save_suffix_subst; | |
5568 | ||
5569 | int save_growing_size; | |
5570 | void *save_growing_value = NULL; | |
5571 | ||
5572 | sf = lookup_spec_function (func); | |
5573 | if (sf == NULL) | |
5574 | fatal_error ("unknown spec function %qs", func); | |
5575 | ||
5576 | /* Push the spec processing context. */ | |
5577 | save_argbuf = argbuf; | |
5578 | ||
5579 | save_arg_going = arg_going; | |
5580 | save_delete_this_arg = delete_this_arg; | |
5581 | save_this_is_output_file = this_is_output_file; | |
5582 | save_this_is_library_file = this_is_library_file; | |
5583 | save_this_is_linker_script = this_is_linker_script; | |
5584 | save_input_from_pipe = input_from_pipe; | |
5585 | save_suffix_subst = suffix_subst; | |
5586 | ||
5587 | /* If we have some object growing now, finalize it so the args and function | |
5588 | eval proceed from a cleared context. This is needed to prevent the first | |
5589 | constructed arg from mistakenly including the growing value. We'll push | |
5590 | this value back on the obstack once the function evaluation is done, to | |
5591 | restore a consistent processing context for our caller. This is fine as | |
5592 | the address of growing objects isn't guaranteed to remain stable until | |
5593 | they are finalized, and we expect this situation to be rare enough for | |
5594 | the extra copy not to be an issue. */ | |
5595 | save_growing_size = obstack_object_size (&obstack); | |
5596 | if (save_growing_size > 0) | |
5597 | save_growing_value = obstack_finish (&obstack); | |
5598 | ||
5599 | /* Create a new spec processing context, and build the function | |
5600 | arguments. */ | |
5601 | ||
5602 | alloc_args (); | |
5603 | if (do_spec_2 (args) < 0) | |
5604 | fatal_error ("error in args to spec function %qs", func); | |
5605 | ||
5606 | /* argbuf_index is an index for the next argument to be inserted, and | |
5607 | so contains the count of the args already inserted. */ | |
5608 | ||
5609 | funcval = (*sf->func) (argbuf.length (), | |
5610 | argbuf.address ()); | |
5611 | ||
5612 | /* Pop the spec processing context. */ | |
5613 | argbuf.release (); | |
5614 | argbuf = save_argbuf; | |
5615 | ||
5616 | arg_going = save_arg_going; | |
5617 | delete_this_arg = save_delete_this_arg; | |
5618 | this_is_output_file = save_this_is_output_file; | |
5619 | this_is_library_file = save_this_is_library_file; | |
5620 | this_is_linker_script = save_this_is_linker_script; | |
5621 | input_from_pipe = save_input_from_pipe; | |
5622 | suffix_subst = save_suffix_subst; | |
5623 | ||
5624 | if (save_growing_size > 0) | |
5625 | obstack_grow (&obstack, save_growing_value, save_growing_size); | |
5626 | ||
5627 | return funcval; | |
5628 | } | |
5629 | ||
5630 | /* Handle a spec function call of the form: | |
5631 | ||
5632 | %:function(args) | |
5633 | ||
5634 | ARGS is processed as a spec in a separate context and split into an | |
5635 | argument vector in the normal fashion. The function returns a string | |
5636 | containing a spec which we then process in the caller's context, or | |
5637 | NULL if no processing is required. | |
5638 | ||
5639 | If RETVAL_NONNULL is not NULL, then store a bool whether function | |
5640 | returned non-NULL. */ | |
5641 | ||
5642 | static const char * | |
5643 | handle_spec_function (const char *p, bool *retval_nonnull) | |
5644 | { | |
5645 | char *func, *args; | |
5646 | const char *endp, *funcval; | |
5647 | int count; | |
5648 | ||
5649 | processing_spec_function++; | |
5650 | ||
5651 | /* Get the function name. */ | |
5652 | for (endp = p; *endp != '\0'; endp++) | |
5653 | { | |
5654 | if (*endp == '(') /* ) */ | |
5655 | break; | |
5656 | /* Only allow [A-Za-z0-9], -, and _ in function names. */ | |
5657 | if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_')) | |
5658 | fatal_error ("malformed spec function name"); | |
5659 | } | |
5660 | if (*endp != '(') /* ) */ | |
5661 | fatal_error ("no arguments for spec function"); | |
5662 | func = save_string (p, endp - p); | |
5663 | p = ++endp; | |
5664 | ||
5665 | /* Get the arguments. */ | |
5666 | for (count = 0; *endp != '\0'; endp++) | |
5667 | { | |
5668 | /* ( */ | |
5669 | if (*endp == ')') | |
5670 | { | |
5671 | if (count == 0) | |
5672 | break; | |
5673 | count--; | |
5674 | } | |
5675 | else if (*endp == '(') /* ) */ | |
5676 | count++; | |
5677 | } | |
5678 | /* ( */ | |
5679 | if (*endp != ')') | |
5680 | fatal_error ("malformed spec function arguments"); | |
5681 | args = save_string (p, endp - p); | |
5682 | p = ++endp; | |
5683 | ||
5684 | /* p now points to just past the end of the spec function expression. */ | |
5685 | ||
5686 | funcval = eval_spec_function (func, args); | |
5687 | if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0) | |
5688 | p = NULL; | |
5689 | if (retval_nonnull) | |
5690 | *retval_nonnull = funcval != NULL; | |
5691 | ||
5692 | free (func); | |
5693 | free (args); | |
5694 | ||
5695 | processing_spec_function--; | |
5696 | ||
5697 | return p; | |
5698 | } | |
5699 | ||
5700 | /* Inline subroutine of handle_braces. Returns true if the current | |
5701 | input suffix matches the atom bracketed by ATOM and END_ATOM. */ | |
5702 | static inline bool | |
5703 | input_suffix_matches (const char *atom, const char *end_atom) | |
5704 | { | |
5705 | return (input_suffix | |
5706 | && !strncmp (input_suffix, atom, end_atom - atom) | |
5707 | && input_suffix[end_atom - atom] == '\0'); | |
5708 | } | |
5709 | ||
5710 | /* Subroutine of handle_braces. Returns true if the current | |
5711 | input file's spec name matches the atom bracketed by ATOM and END_ATOM. */ | |
5712 | static bool | |
5713 | input_spec_matches (const char *atom, const char *end_atom) | |
5714 | { | |
5715 | return (input_file_compiler | |
5716 | && input_file_compiler->suffix | |
5717 | && input_file_compiler->suffix[0] != '\0' | |
5718 | && !strncmp (input_file_compiler->suffix + 1, atom, | |
5719 | end_atom - atom) | |
5720 | && input_file_compiler->suffix[end_atom - atom + 1] == '\0'); | |
5721 | } | |
5722 | ||
5723 | /* Subroutine of handle_braces. Returns true if a switch | |
5724 | matching the atom bracketed by ATOM and END_ATOM appeared on the | |
5725 | command line. */ | |
5726 | static bool | |
5727 | switch_matches (const char *atom, const char *end_atom, int starred) | |
5728 | { | |
5729 | int i; | |
5730 | int len = end_atom - atom; | |
5731 | int plen = starred ? len : -1; | |
5732 | ||
5733 | for (i = 0; i < n_switches; i++) | |
5734 | if (!strncmp (switches[i].part1, atom, len) | |
5735 | && (starred || switches[i].part1[len] == '\0') | |
5736 | && check_live_switch (i, plen)) | |
5737 | return true; | |
5738 | ||
5739 | /* Check if a switch with separated form matching the atom. | |
5740 | We check -D and -U switches. */ | |
5741 | else if (switches[i].args != 0) | |
5742 | { | |
5743 | if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U') | |
5744 | && *switches[i].part1 == atom[0]) | |
5745 | { | |
5746 | if (!strncmp (switches[i].args[0], &atom[1], len - 1) | |
5747 | && (starred || (switches[i].part1[1] == '\0' | |
5748 | && switches[i].args[0][len - 1] == '\0')) | |
5749 | && check_live_switch (i, (starred ? 1 : -1))) | |
5750 | return true; | |
5751 | } | |
5752 | } | |
5753 | ||
5754 | return false; | |
5755 | } | |
5756 | ||
5757 | /* Inline subroutine of handle_braces. Mark all of the switches which | |
5758 | match ATOM (extends to END_ATOM; STARRED indicates whether there | |
5759 | was a star after the atom) for later processing. */ | |
5760 | static inline void | |
5761 | mark_matching_switches (const char *atom, const char *end_atom, int starred) | |
5762 | { | |
5763 | int i; | |
5764 | int len = end_atom - atom; | |
5765 | int plen = starred ? len : -1; | |
5766 | ||
5767 | for (i = 0; i < n_switches; i++) | |
5768 | if (!strncmp (switches[i].part1, atom, len) | |
5769 | && (starred || switches[i].part1[len] == '\0') | |
5770 | && check_live_switch (i, plen)) | |
5771 | switches[i].ordering = 1; | |
5772 | } | |
5773 | ||
5774 | /* Inline subroutine of handle_braces. Process all the currently | |
5775 | marked switches through give_switch, and clear the marks. */ | |
5776 | static inline void | |
5777 | process_marked_switches (void) | |
5778 | { | |
5779 | int i; | |
5780 | ||
5781 | for (i = 0; i < n_switches; i++) | |
5782 | if (switches[i].ordering == 1) | |
5783 | { | |
5784 | switches[i].ordering = 0; | |
5785 | give_switch (i, 0); | |
5786 | } | |
5787 | } | |
5788 | ||
5789 | /* Handle a %{ ... } construct. P points just inside the leading {. | |
5790 | Returns a pointer one past the end of the brace block, or 0 | |
5791 | if we call do_spec_1 and that returns -1. */ | |
5792 | ||
5793 | static const char * | |
5794 | handle_braces (const char *p) | |
5795 | { | |
5796 | const char *atom, *end_atom; | |
5797 | const char *d_atom = NULL, *d_end_atom = NULL; | |
5798 | const char *orig = p; | |
5799 | ||
5800 | bool a_is_suffix; | |
5801 | bool a_is_spectype; | |
5802 | bool a_is_starred; | |
5803 | bool a_is_negated; | |
5804 | bool a_matched; | |
5805 | ||
5806 | bool a_must_be_last = false; | |
5807 | bool ordered_set = false; | |
5808 | bool disjunct_set = false; | |
5809 | bool disj_matched = false; | |
5810 | bool disj_starred = true; | |
5811 | bool n_way_choice = false; | |
5812 | bool n_way_matched = false; | |
5813 | ||
5814 | #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) | |
5815 | ||
5816 | do | |
5817 | { | |
5818 | if (a_must_be_last) | |
5819 | goto invalid; | |
5820 | ||
5821 | /* Scan one "atom" (S in the description above of %{}, possibly | |
5822 | with '!', '.', '@', ',', or '*' modifiers). */ | |
5823 | a_matched = false; | |
5824 | a_is_suffix = false; | |
5825 | a_is_starred = false; | |
5826 | a_is_negated = false; | |
5827 | a_is_spectype = false; | |
5828 | ||
5829 | SKIP_WHITE (); | |
5830 | if (*p == '!') | |
5831 | p++, a_is_negated = true; | |
5832 | ||
5833 | SKIP_WHITE (); | |
5834 | if (*p == '%' && p[1] == ':') | |
5835 | { | |
5836 | atom = NULL; | |
5837 | end_atom = NULL; | |
5838 | p = handle_spec_function (p + 2, &a_matched); | |
5839 | } | |
5840 | else | |
5841 | { | |
5842 | if (*p == '.') | |
5843 | p++, a_is_suffix = true; | |
5844 | else if (*p == ',') | |
5845 | p++, a_is_spectype = true; | |
5846 | ||
5847 | atom = p; | |
5848 | while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' | |
5849 | || *p == ',' || *p == '.' || *p == '@') | |
5850 | p++; | |
5851 | end_atom = p; | |
5852 | ||
5853 | if (*p == '*') | |
5854 | p++, a_is_starred = 1; | |
5855 | } | |
5856 | ||
5857 | SKIP_WHITE (); | |
5858 | switch (*p) | |
5859 | { | |
5860 | case '&': case '}': | |
5861 | /* Substitute the switch(es) indicated by the current atom. */ | |
5862 | ordered_set = true; | |
5863 | if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix | |
5864 | || a_is_spectype || atom == end_atom) | |
5865 | goto invalid; | |
5866 | ||
5867 | mark_matching_switches (atom, end_atom, a_is_starred); | |
5868 | ||
5869 | if (*p == '}') | |
5870 | process_marked_switches (); | |
5871 | break; | |
5872 | ||
5873 | case '|': case ':': | |
5874 | /* Substitute some text if the current atom appears as a switch | |
5875 | or suffix. */ | |
5876 | disjunct_set = true; | |
5877 | if (ordered_set) | |
5878 | goto invalid; | |
5879 | ||
5880 | if (atom && atom == end_atom) | |
5881 | { | |
5882 | if (!n_way_choice || disj_matched || *p == '|' | |
5883 | || a_is_negated || a_is_suffix || a_is_spectype | |
5884 | || a_is_starred) | |
5885 | goto invalid; | |
5886 | ||
5887 | /* An empty term may appear as the last choice of an | |
5888 | N-way choice set; it means "otherwise". */ | |
5889 | a_must_be_last = true; | |
5890 | disj_matched = !n_way_matched; | |
5891 | disj_starred = false; | |
5892 | } | |
5893 | else | |
5894 | { | |
5895 | if ((a_is_suffix || a_is_spectype) && a_is_starred) | |
5896 | goto invalid; | |
5897 | ||
5898 | if (!a_is_starred) | |
5899 | disj_starred = false; | |
5900 | ||
5901 | /* Don't bother testing this atom if we already have a | |
5902 | match. */ | |
5903 | if (!disj_matched && !n_way_matched) | |
5904 | { | |
5905 | if (atom == NULL) | |
5906 | /* a_matched is already set by handle_spec_function. */; | |
5907 | else if (a_is_suffix) | |
5908 | a_matched = input_suffix_matches (atom, end_atom); | |
5909 | else if (a_is_spectype) | |
5910 | a_matched = input_spec_matches (atom, end_atom); | |
5911 | else | |
5912 | a_matched = switch_matches (atom, end_atom, a_is_starred); | |
5913 | ||
5914 | if (a_matched != a_is_negated) | |
5915 | { | |
5916 | disj_matched = true; | |
5917 | d_atom = atom; | |
5918 | d_end_atom = end_atom; | |
5919 | } | |
5920 | } | |
5921 | } | |
5922 | ||
5923 | if (*p == ':') | |
5924 | { | |
5925 | /* Found the body, that is, the text to substitute if the | |
5926 | current disjunction matches. */ | |
5927 | p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred, | |
5928 | disj_matched && !n_way_matched); | |
5929 | if (p == 0) | |
5930 | return 0; | |
5931 | ||
5932 | /* If we have an N-way choice, reset state for the next | |
5933 | disjunction. */ | |
5934 | if (*p == ';') | |
5935 | { | |
5936 | n_way_choice = true; | |
5937 | n_way_matched |= disj_matched; | |
5938 | disj_matched = false; | |
5939 | disj_starred = true; | |
5940 | d_atom = d_end_atom = NULL; | |
5941 | } | |
5942 | } | |
5943 | break; | |
5944 | ||
5945 | default: | |
5946 | goto invalid; | |
5947 | } | |
5948 | } | |
5949 | while (*p++ != '}'); | |
5950 | ||
5951 | return p; | |
5952 | ||
5953 | invalid: | |
5954 | fatal_error ("braced spec %qs is invalid at %qc", orig, *p); | |
5955 | ||
5956 | #undef SKIP_WHITE | |
5957 | } | |
5958 | ||
5959 | /* Subroutine of handle_braces. Scan and process a brace substitution body | |
5960 | (X in the description of %{} syntax). P points one past the colon; | |
5961 | ATOM and END_ATOM bracket the first atom which was found to be true | |
5962 | (present) in the current disjunction; STARRED indicates whether all | |
5963 | the atoms in the current disjunction were starred (for syntax validation); | |
5964 | MATCHED indicates whether the disjunction matched or not, and therefore | |
5965 | whether or not the body is to be processed through do_spec_1 or just | |
5966 | skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1 | |
5967 | returns -1. */ | |
5968 | ||
5969 | static const char * | |
5970 | process_brace_body (const char *p, const char *atom, const char *end_atom, | |
5971 | int starred, int matched) | |
5972 | { | |
5973 | const char *body, *end_body; | |
5974 | unsigned int nesting_level; | |
5975 | bool have_subst = false; | |
5976 | ||
5977 | /* Locate the closing } or ;, honoring nested braces. | |
5978 | Trim trailing whitespace. */ | |
5979 | body = p; | |
5980 | nesting_level = 1; | |
5981 | for (;;) | |
5982 | { | |
5983 | if (*p == '{') | |
5984 | nesting_level++; | |
5985 | else if (*p == '}') | |
5986 | { | |
5987 | if (!--nesting_level) | |
5988 | break; | |
5989 | } | |
5990 | else if (*p == ';' && nesting_level == 1) | |
5991 | break; | |
5992 | else if (*p == '%' && p[1] == '*' && nesting_level == 1) | |
5993 | have_subst = true; | |
5994 | else if (*p == '\0') | |
5995 | goto invalid; | |
5996 | p++; | |
5997 | } | |
5998 | ||
5999 | end_body = p; | |
6000 | while (end_body[-1] == ' ' || end_body[-1] == '\t') | |
6001 | end_body--; | |
6002 | ||
6003 | if (have_subst && !starred) | |
6004 | goto invalid; | |
6005 | ||
6006 | if (matched) | |
6007 | { | |
6008 | /* Copy the substitution body to permanent storage and execute it. | |
6009 | If have_subst is false, this is a simple matter of running the | |
6010 | body through do_spec_1... */ | |
6011 | char *string = save_string (body, end_body - body); | |
6012 | if (!have_subst) | |
6013 | { | |
6014 | if (do_spec_1 (string, 0, NULL) < 0) | |
6015 | return 0; | |
6016 | } | |
6017 | else | |
6018 | { | |
6019 | /* ... but if have_subst is true, we have to process the | |
6020 | body once for each matching switch, with %* set to the | |
6021 | variant part of the switch. */ | |
6022 | unsigned int hard_match_len = end_atom - atom; | |
6023 | int i; | |
6024 | ||
6025 | for (i = 0; i < n_switches; i++) | |
6026 | if (!strncmp (switches[i].part1, atom, hard_match_len) | |
6027 | && check_live_switch (i, hard_match_len)) | |
6028 | { | |
6029 | if (do_spec_1 (string, 0, | |
6030 | &switches[i].part1[hard_match_len]) < 0) | |
6031 | return 0; | |
6032 | /* Pass any arguments this switch has. */ | |
6033 | give_switch (i, 1); | |
6034 | suffix_subst = NULL; | |
6035 | } | |
6036 | } | |
6037 | } | |
6038 | ||
6039 | return p; | |
6040 | ||
6041 | invalid: | |
6042 | fatal_error ("braced spec body %qs is invalid", body); | |
6043 | } | |
6044 | \f | |
6045 | /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch | |
6046 | on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} | |
6047 | spec, or -1 if either exact match or %* is used. | |
6048 | ||
6049 | A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch | |
6050 | whose value does not begin with "no-" is obsoleted by the same value | |
6051 | with the "no-", similarly for a switch with the "no-" prefix. */ | |
6052 | ||
6053 | static int | |
6054 | check_live_switch (int switchnum, int prefix_length) | |
6055 | { | |
6056 | const char *name = switches[switchnum].part1; | |
6057 | int i; | |
6058 | ||
6059 | /* If we already processed this switch and determined if it was | |
6060 | live or not, return our past determination. */ | |
6061 | if (switches[switchnum].live_cond != 0) | |
6062 | return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0 | |
6063 | && (switches[switchnum].live_cond & SWITCH_FALSE) == 0 | |
6064 | && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY) | |
6065 | == 0); | |
6066 | ||
6067 | /* In the common case of {<at-most-one-letter>*}, a negating | |
6068 | switch would always match, so ignore that case. We will just | |
6069 | send the conflicting switches to the compiler phase. */ | |
6070 | if (prefix_length >= 0 && prefix_length <= 1) | |
6071 | return 1; | |
6072 | ||
6073 | /* Now search for duplicate in a manner that depends on the name. */ | |
6074 | switch (*name) | |
6075 | { | |
6076 | case 'O': | |
6077 | for (i = switchnum + 1; i < n_switches; i++) | |
6078 | if (switches[i].part1[0] == 'O') | |
6079 | { | |
6080 | switches[switchnum].validated = true; | |
6081 | switches[switchnum].live_cond = SWITCH_FALSE; | |
6082 | return 0; | |
6083 | } | |
6084 | break; | |
6085 | ||
6086 | case 'W': case 'f': case 'm': case 'g': | |
6087 | if (! strncmp (name + 1, "no-", 3)) | |
6088 | { | |
6089 | /* We have Xno-YYY, search for XYYY. */ | |
6090 | for (i = switchnum + 1; i < n_switches; i++) | |
6091 | if (switches[i].part1[0] == name[0] | |
6092 | && ! strcmp (&switches[i].part1[1], &name[4])) | |
6093 | { | |
6094 | /* --specs are validated with the validate_switches mechanism. */ | |
6095 | if (switches[switchnum].known) | |
6096 | switches[switchnum].validated = true; | |
6097 | switches[switchnum].live_cond = SWITCH_FALSE; | |
6098 | return 0; | |
6099 | } | |
6100 | } | |
6101 | else | |
6102 | { | |
6103 | /* We have XYYY, search for Xno-YYY. */ | |
6104 | for (i = switchnum + 1; i < n_switches; i++) | |
6105 | if (switches[i].part1[0] == name[0] | |
6106 | && switches[i].part1[1] == 'n' | |
6107 | && switches[i].part1[2] == 'o' | |
6108 | && switches[i].part1[3] == '-' | |
6109 | && !strcmp (&switches[i].part1[4], &name[1])) | |
6110 | { | |
6111 | /* --specs are validated with the validate_switches mechanism. */ | |
6112 | if (switches[switchnum].known) | |
6113 | switches[switchnum].validated = true; | |
6114 | switches[switchnum].live_cond = SWITCH_FALSE; | |
6115 | return 0; | |
6116 | } | |
6117 | } | |
6118 | break; | |
6119 | } | |
6120 | ||
6121 | /* Otherwise the switch is live. */ | |
6122 | switches[switchnum].live_cond |= SWITCH_LIVE; | |
6123 | return 1; | |
6124 | } | |
6125 | \f | |
6126 | /* Pass a switch to the current accumulating command | |
6127 | in the same form that we received it. | |
6128 | SWITCHNUM identifies the switch; it is an index into | |
6129 | the vector of switches gcc received, which is `switches'. | |
6130 | This cannot fail since it never finishes a command line. | |
6131 | ||
6132 | If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */ | |
6133 | ||
6134 | static void | |
6135 | give_switch (int switchnum, int omit_first_word) | |
6136 | { | |
6137 | if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0) | |
6138 | return; | |
6139 | ||
6140 | if (!omit_first_word) | |
6141 | { | |
6142 | do_spec_1 ("-", 0, NULL); | |
6143 | do_spec_1 (switches[switchnum].part1, 1, NULL); | |
6144 | } | |
6145 | ||
6146 | if (switches[switchnum].args != 0) | |
6147 | { | |
6148 | const char **p; | |
6149 | for (p = switches[switchnum].args; *p; p++) | |
6150 | { | |
6151 | const char *arg = *p; | |
6152 | ||
6153 | do_spec_1 (" ", 0, NULL); | |
6154 | if (suffix_subst) | |
6155 | { | |
6156 | unsigned length = strlen (arg); | |
6157 | int dot = 0; | |
6158 | ||
6159 | while (length-- && !IS_DIR_SEPARATOR (arg[length])) | |
6160 | if (arg[length] == '.') | |
6161 | { | |
6162 | (CONST_CAST (char *, arg))[length] = 0; | |
6163 | dot = 1; | |
6164 | break; | |
6165 | } | |
6166 | do_spec_1 (arg, 1, NULL); | |
6167 | if (dot) | |
6168 | (CONST_CAST (char *, arg))[length] = '.'; | |
6169 | do_spec_1 (suffix_subst, 1, NULL); | |
6170 | } | |
6171 | else | |
6172 | do_spec_1 (arg, 1, NULL); | |
6173 | } | |
6174 | } | |
6175 | ||
6176 | do_spec_1 (" ", 0, NULL); | |
6177 | switches[switchnum].validated = true; | |
6178 | } | |
6179 | \f | |
6180 | /* Print GCC configuration (e.g. version, thread model, target, | |
6181 | configuration_arguments) to a given FILE. */ | |
6182 | ||
6183 | static void | |
6184 | print_configuration (FILE *file) | |
6185 | { | |
6186 | int n; | |
6187 | const char *thrmod; | |
6188 | ||
6189 | fnotice (file, "Target: %s\n", spec_machine); | |
6190 | fnotice (file, "Configured with: %s\n", configuration_arguments); | |
6191 | ||
6192 | #ifdef THREAD_MODEL_SPEC | |
6193 | /* We could have defined THREAD_MODEL_SPEC to "%*" by default, | |
6194 | but there's no point in doing all this processing just to get | |
6195 | thread_model back. */ | |
6196 | obstack_init (&obstack); | |
6197 | do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); | |
6198 | obstack_1grow (&obstack, '\0'); | |
6199 | thrmod = XOBFINISH (&obstack, const char *); | |
6200 | #else | |
6201 | thrmod = thread_model; | |
6202 | #endif | |
6203 | ||
6204 | fnotice (file, "Thread model: %s\n", thrmod); | |
6205 | ||
6206 | /* compiler_version is truncated at the first space when initialized | |
6207 | from version string, so truncate version_string at the first space | |
6208 | before comparing. */ | |
6209 | for (n = 0; version_string[n]; n++) | |
6210 | if (version_string[n] == ' ') | |
6211 | break; | |
6212 | ||
6213 | if (! strncmp (version_string, compiler_version, n) | |
6214 | && compiler_version[n] == 0) | |
6215 | fnotice (file, "gcc version %s %s\n\n", version_string, | |
6216 | pkgversion_string); | |
6217 | else | |
6218 | fnotice (file, "gcc driver version %s %sexecuting gcc version %s\n\n", | |
6219 | version_string, pkgversion_string, compiler_version); | |
6220 | ||
6221 | } | |
6222 | ||
6223 | #define RETRY_ICE_ATTEMPTS 3 | |
6224 | ||
6225 | /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */ | |
6226 | ||
6227 | static bool | |
6228 | files_equal_p (char *file1, char *file2) | |
6229 | { | |
6230 | struct stat st1, st2; | |
6231 | off_t n, len; | |
6232 | int fd1, fd2; | |
6233 | const int bufsize = 8192; | |
6234 | char *buf = XNEWVEC (char, bufsize); | |
6235 | ||
6236 | fd1 = open (file1, O_RDONLY); | |
6237 | fd2 = open (file2, O_RDONLY); | |
6238 | ||
6239 | if (fd1 < 0 || fd2 < 0) | |
6240 | goto error; | |
6241 | ||
6242 | if (fstat (fd1, &st1) < 0 || fstat (fd2, &st2) < 0) | |
6243 | goto error; | |
6244 | ||
6245 | if (st1.st_size != st2.st_size) | |
6246 | goto error; | |
6247 | ||
6248 | for (n = st1.st_size; n; n -= len) | |
6249 | { | |
6250 | len = n; | |
6251 | if ((int) len > bufsize / 2) | |
6252 | len = bufsize / 2; | |
6253 | ||
6254 | if (read (fd1, buf, len) != (int) len | |
6255 | || read (fd2, buf + bufsize / 2, len) != (int) len) | |
6256 | { | |
6257 | goto error; | |
6258 | } | |
6259 | ||
6260 | if (memcmp (buf, buf + bufsize / 2, len) != 0) | |
6261 | goto error; | |
6262 | } | |
6263 | ||
6264 | free (buf); | |
6265 | close (fd1); | |
6266 | close (fd2); | |
6267 | ||
6268 | return 1; | |
6269 | ||
6270 | error: | |
6271 | free (buf); | |
6272 | close (fd1); | |
6273 | close (fd2); | |
6274 | return 0; | |
6275 | } | |
6276 | ||
6277 | /* Check that compiler's output doesn't differ across runs. | |
6278 | TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing | |
6279 | stdout and stderr for each compiler run. Return true if all of | |
6280 | TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */ | |
6281 | ||
6282 | static bool | |
6283 | check_repro (char **temp_stdout_files, char **temp_stderr_files) | |
6284 | { | |
6285 | int i; | |
6286 | for (i = 0; i < RETRY_ICE_ATTEMPTS - 2; ++i) | |
6287 | { | |
6288 | if (!files_equal_p (temp_stdout_files[i], temp_stdout_files[i + 1]) | |
6289 | || !files_equal_p (temp_stderr_files[i], temp_stderr_files[i + 1])) | |
6290 | { | |
6291 | fnotice (stderr, "The bug is not reproducible, so it is" | |
6292 | " likely a hardware or OS problem.\n"); | |
6293 | break; | |
6294 | } | |
6295 | } | |
6296 | return i == RETRY_ICE_ATTEMPTS - 2; | |
6297 | } | |
6298 | ||
6299 | enum attempt_status { | |
6300 | ATTEMPT_STATUS_FAIL_TO_RUN, | |
6301 | ATTEMPT_STATUS_SUCCESS, | |
6302 | ATTEMPT_STATUS_ICE | |
6303 | }; | |
6304 | ||
6305 | ||
6306 | /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout | |
6307 | to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP | |
6308 | and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write | |
6309 | GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if | |
6310 | compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and | |
6311 | ATTEMPT_STATUS_SUCCESS otherwise. */ | |
6312 | ||
6313 | static enum attempt_status | |
6314 | run_attempt (const char **new_argv, const char *out_temp, | |
6315 | const char *err_temp, int emit_system_info, int append) | |
6316 | { | |
6317 | ||
6318 | if (emit_system_info) | |
6319 | { | |
6320 | FILE *file_out = fopen (err_temp, "a"); | |
6321 | print_configuration (file_out); | |
6322 | fclose (file_out); | |
6323 | } | |
6324 | ||
6325 | int exit_status; | |
6326 | const char *errmsg; | |
6327 | struct pex_obj *pex; | |
6328 | int err; | |
6329 | int pex_flags = PEX_USE_PIPES | PEX_LAST; | |
6330 | enum attempt_status status = ATTEMPT_STATUS_FAIL_TO_RUN; | |
6331 | ||
6332 | if (append) | |
6333 | pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND; | |
6334 | ||
6335 | pex = pex_init (PEX_USE_PIPES, new_argv[0], NULL); | |
6336 | if (!pex) | |
6337 | fatal_error ("pex_init failed: %m"); | |
6338 | ||
6339 | errmsg = pex_run (pex, pex_flags, new_argv[0], | |
6340 | CONST_CAST2 (char *const *, const char **, &new_argv[1]), out_temp, | |
6341 | err_temp, &err); | |
6342 | if (errmsg != NULL) | |
6343 | { | |
6344 | if (err == 0) | |
6345 | fatal_error (errmsg); | |
6346 | else | |
6347 | { | |
6348 | errno = err; | |
6349 | pfatal_with_name (errmsg); | |
6350 | } | |
6351 | } | |
6352 | ||
6353 | if (!pex_get_status (pex, 1, &exit_status)) | |
6354 | goto out; | |
6355 | ||
6356 | switch (WEXITSTATUS (exit_status)) | |
6357 | { | |
6358 | case ICE_EXIT_CODE: | |
6359 | status = ATTEMPT_STATUS_ICE; | |
6360 | break; | |
6361 | ||
6362 | case SUCCESS_EXIT_CODE: | |
6363 | status = ATTEMPT_STATUS_SUCCESS; | |
6364 | break; | |
6365 | ||
6366 | default: | |
6367 | ; | |
6368 | } | |
6369 | ||
6370 | out: | |
6371 | pex_free (pex); | |
6372 | return status; | |
6373 | } | |
6374 | ||
6375 | /* This routine adds preprocessed source code into the given ERR_FILE. | |
6376 | To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to | |
6377 | add information in report file. RUN_ATTEMPT should return | |
6378 | ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */ | |
6379 | ||
6380 | static void | |
6381 | do_report_bug (const char **new_argv, const int nargs, | |
6382 | char **out_file, char **err_file) | |
6383 | { | |
6384 | int i, status; | |
6385 | int fd = open (*out_file, O_RDWR | O_APPEND); | |
6386 | if (fd < 0) | |
6387 | return; | |
6388 | write (fd, "\n//", 3); | |
6389 | for (i = 0; i < nargs; i++) | |
6390 | { | |
6391 | write (fd, " ", 1); | |
6392 | write (fd, new_argv[i], strlen (new_argv[i])); | |
6393 | } | |
6394 | write (fd, "\n\n", 2); | |
6395 | close (fd); | |
6396 | new_argv[nargs] = "-E"; | |
6397 | new_argv[nargs + 1] = NULL; | |
6398 | ||
6399 | status = run_attempt (new_argv, *out_file, *err_file, 0, 1); | |
6400 | ||
6401 | if (status == ATTEMPT_STATUS_SUCCESS) | |
6402 | { | |
6403 | fnotice (stderr, "Preprocessed source stored into %s file," | |
6404 | " please attach this to your bugreport.\n", *out_file); | |
6405 | /* Make sure it is not deleted. */ | |
6406 | free (*out_file); | |
6407 | *out_file = NULL; | |
6408 | } | |
6409 | } | |
6410 | ||
6411 | /* Append string STR to file FILE. */ | |
6412 | ||
6413 | static void | |
6414 | append_text (char *file, const char *str) | |
6415 | { | |
6416 | int fd = open (file, O_RDWR | O_APPEND); | |
6417 | if (fd < 0) | |
6418 | return; | |
6419 | ||
6420 | write (fd, str, strlen (str)); | |
6421 | close (fd); | |
6422 | } | |
6423 | ||
6424 | /* Try to reproduce ICE. If bug is reproducible, generate report .err file | |
6425 | containing GCC configuration, backtrace, compiler's command line options | |
6426 | and preprocessed source code. */ | |
6427 | ||
6428 | static void | |
6429 | try_generate_repro (const char **argv) | |
6430 | { | |
6431 | int i, nargs, out_arg = -1, quiet = 0, attempt; | |
6432 | const char **new_argv; | |
6433 | char *temp_files[RETRY_ICE_ATTEMPTS * 2]; | |
6434 | char **temp_stdout_files = &temp_files[0]; | |
6435 | char **temp_stderr_files = &temp_files[RETRY_ICE_ATTEMPTS]; | |
6436 | ||
6437 | if (gcc_input_filename == NULL || ! strcmp (gcc_input_filename, "-")) | |
6438 | return; | |
6439 | ||
6440 | for (nargs = 0; argv[nargs] != NULL; ++nargs) | |
6441 | /* Only retry compiler ICEs, not preprocessor ones. */ | |
6442 | if (! strcmp (argv[nargs], "-E")) | |
6443 | return; | |
6444 | else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o') | |
6445 | { | |
6446 | if (out_arg == -1) | |
6447 | out_arg = nargs; | |
6448 | else | |
6449 | return; | |
6450 | } | |
6451 | /* If the compiler is going to output any time information, | |
6452 | it might varry between invocations. */ | |
6453 | else if (! strcmp (argv[nargs], "-quiet")) | |
6454 | quiet = 1; | |
6455 | else if (! strcmp (argv[nargs], "-ftime-report")) | |
6456 | return; | |
6457 | ||
6458 | if (out_arg == -1 || !quiet) | |
6459 | return; | |
6460 | ||
6461 | memset (temp_files, '\0', sizeof (temp_files)); | |
6462 | new_argv = XALLOCAVEC (const char *, nargs + 4); | |
6463 | memcpy (new_argv, argv, (nargs + 1) * sizeof (const char *)); | |
6464 | new_argv[nargs++] = "-frandom-seed=0"; | |
6465 | new_argv[nargs++] = "-fdump-noaddr"; | |
6466 | new_argv[nargs] = NULL; | |
6467 | if (new_argv[out_arg][2] == '\0') | |
6468 | new_argv[out_arg + 1] = "-"; | |
6469 | else | |
6470 | new_argv[out_arg] = "-o-"; | |
6471 | ||
6472 | int status; | |
6473 | for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS; ++attempt) | |
6474 | { | |
6475 | int emit_system_info = 0; | |
6476 | int append = 0; | |
6477 | temp_stdout_files[attempt] = make_temp_file (".out"); | |
6478 | temp_stderr_files[attempt] = make_temp_file (".err"); | |
6479 | ||
6480 | if (attempt == RETRY_ICE_ATTEMPTS - 1) | |
6481 | { | |
6482 | append = 1; | |
6483 | emit_system_info = 1; | |
6484 | } | |
6485 | ||
6486 | if (emit_system_info) | |
6487 | append_text (temp_stderr_files[attempt], "/*\n"); | |
6488 | ||
6489 | status = run_attempt (new_argv, temp_stdout_files[attempt], | |
6490 | temp_stderr_files[attempt], emit_system_info, | |
6491 | append); | |
6492 | ||
6493 | if (emit_system_info) | |
6494 | append_text (temp_stderr_files[attempt], "*/\n"); | |
6495 | ||
6496 | if (status != ATTEMPT_STATUS_ICE) | |
6497 | { | |
6498 | fnotice (stderr, "The bug is not reproducible, so it is" | |
6499 | " likely a hardware or OS problem.\n"); | |
6500 | goto out; | |
6501 | } | |
6502 | } | |
6503 | ||
6504 | if (!check_repro (temp_stdout_files, temp_stderr_files)) | |
6505 | goto out; | |
6506 | ||
6507 | /* In final attempt we append compiler options and preprocesssed code to last | |
6508 | generated .err file with configuration and backtrace. */ | |
6509 | do_report_bug (new_argv, nargs, | |
6510 | &temp_stderr_files[RETRY_ICE_ATTEMPTS - 1], | |
6511 | &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1]); | |
6512 | ||
6513 | out: | |
6514 | for (i = 0; i < RETRY_ICE_ATTEMPTS * 2; i++) | |
6515 | if (temp_files[i]) | |
6516 | { | |
6517 | unlink (temp_stdout_files[i]); | |
6518 | free (temp_stdout_files[i]); | |
6519 | } | |
6520 | } | |
6521 | ||
6522 | /* Search for a file named NAME trying various prefixes including the | |
6523 | user's -B prefix and some standard ones. | |
6524 | Return the absolute file name found. If nothing is found, return NAME. */ | |
6525 | ||
6526 | static const char * | |
6527 | find_file (const char *name) | |
6528 | { | |
6529 | char *newname = find_a_file (&startfile_prefixes, name, R_OK, true); | |
6530 | return newname ? newname : name; | |
6531 | } | |
6532 | ||
6533 | /* Determine whether a directory exists. If LINKER, return 0 for | |
6534 | certain fixed names not needed by the linker. */ | |
6535 | ||
6536 | static int | |
6537 | is_directory (const char *path1, bool linker) | |
6538 | { | |
6539 | int len1; | |
6540 | char *path; | |
6541 | char *cp; | |
6542 | struct stat st; | |
6543 | ||
6544 | /* Ensure the string ends with "/.". The resulting path will be a | |
6545 | directory even if the given path is a symbolic link. */ | |
6546 | len1 = strlen (path1); | |
6547 | path = (char *) alloca (3 + len1); | |
6548 | memcpy (path, path1, len1); | |
6549 | cp = path + len1; | |
6550 | if (!IS_DIR_SEPARATOR (cp[-1])) | |
6551 | *cp++ = DIR_SEPARATOR; | |
6552 | *cp++ = '.'; | |
6553 | *cp = '\0'; | |
6554 | ||
6555 | /* Exclude directories that the linker is known to search. */ | |
6556 | if (linker | |
6557 | && IS_DIR_SEPARATOR (path[0]) | |
6558 | && ((cp - path == 6 | |
6559 | && filename_ncmp (path + 1, "lib", 3) == 0) | |
6560 | || (cp - path == 10 | |
6561 | && filename_ncmp (path + 1, "usr", 3) == 0 | |
6562 | && IS_DIR_SEPARATOR (path[4]) | |
6563 | && filename_ncmp (path + 5, "lib", 3) == 0))) | |
6564 | return 0; | |
6565 | ||
6566 | return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); | |
6567 | } | |
6568 | ||
6569 | /* Set up the various global variables to indicate that we're processing | |
6570 | the input file named FILENAME. */ | |
6571 | ||
6572 | void | |
6573 | set_input (const char *filename) | |
6574 | { | |
6575 | const char *p; | |
6576 | ||
6577 | gcc_input_filename = filename; | |
6578 | input_filename_length = strlen (gcc_input_filename); | |
6579 | input_basename = lbasename (gcc_input_filename); | |
6580 | ||
6581 | /* Find a suffix starting with the last period, | |
6582 | and set basename_length to exclude that suffix. */ | |
6583 | basename_length = strlen (input_basename); | |
6584 | suffixed_basename_length = basename_length; | |
6585 | p = input_basename + basename_length; | |
6586 | while (p != input_basename && *p != '.') | |
6587 | --p; | |
6588 | if (*p == '.' && p != input_basename) | |
6589 | { | |
6590 | basename_length = p - input_basename; | |
6591 | input_suffix = p + 1; | |
6592 | } | |
6593 | else | |
6594 | input_suffix = ""; | |
6595 | ||
6596 | /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then | |
6597 | we will need to do a stat on the gcc_input_filename. The | |
6598 | INPUT_STAT_SET signals that the stat is needed. */ | |
6599 | input_stat_set = 0; | |
6600 | } | |
6601 | \f | |
6602 | /* On fatal signals, delete all the temporary files. */ | |
6603 | ||
6604 | static void | |
6605 | fatal_signal (int signum) | |
6606 | { | |
6607 | signal (signum, SIG_DFL); | |
6608 | delete_failure_queue (); | |
6609 | delete_temp_files (); | |
6610 | /* Get the same signal again, this time not handled, | |
6611 | so its normal effect occurs. */ | |
6612 | kill (getpid (), signum); | |
6613 | } | |
6614 | ||
6615 | /* Compare the contents of the two files named CMPFILE[0] and | |
6616 | CMPFILE[1]. Return zero if they're identical, nonzero | |
6617 | otherwise. */ | |
6618 | ||
6619 | static int | |
6620 | compare_files (char *cmpfile[]) | |
6621 | { | |
6622 | int ret = 0; | |
6623 | FILE *temp[2] = { NULL, NULL }; | |
6624 | int i; | |
6625 | ||
6626 | #if HAVE_MMAP_FILE | |
6627 | { | |
6628 | size_t length[2]; | |
6629 | void *map[2] = { NULL, NULL }; | |
6630 | ||
6631 | for (i = 0; i < 2; i++) | |
6632 | { | |
6633 | struct stat st; | |
6634 | ||
6635 | if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode)) | |
6636 | { | |
6637 | error ("%s: could not determine length of compare-debug file %s", | |
6638 | gcc_input_filename, cmpfile[i]); | |
6639 | ret = 1; | |
6640 | break; | |
6641 | } | |
6642 | ||
6643 | length[i] = st.st_size; | |
6644 | } | |
6645 | ||
6646 | if (!ret && length[0] != length[1]) | |
6647 | { | |
6648 | error ("%s: -fcompare-debug failure (length)", gcc_input_filename); | |
6649 | ret = 1; | |
6650 | } | |
6651 | ||
6652 | if (!ret) | |
6653 | for (i = 0; i < 2; i++) | |
6654 | { | |
6655 | int fd = open (cmpfile[i], O_RDONLY); | |
6656 | if (fd < 0) | |
6657 | { | |
6658 | error ("%s: could not open compare-debug file %s", | |
6659 | gcc_input_filename, cmpfile[i]); | |
6660 | ret = 1; | |
6661 | break; | |
6662 | } | |
6663 | ||
6664 | map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0); | |
6665 | close (fd); | |
6666 | ||
6667 | if (map[i] == (void *) MAP_FAILED) | |
6668 | { | |
6669 | ret = -1; | |
6670 | break; | |
6671 | } | |
6672 | } | |
6673 | ||
6674 | if (!ret) | |
6675 | { | |
6676 | if (memcmp (map[0], map[1], length[0]) != 0) | |
6677 | { | |
6678 | error ("%s: -fcompare-debug failure", gcc_input_filename); | |
6679 | ret = 1; | |
6680 | } | |
6681 | } | |
6682 | ||
6683 | for (i = 0; i < 2; i++) | |
6684 | if (map[i]) | |
6685 | munmap ((caddr_t) map[i], length[i]); | |
6686 | ||
6687 | if (ret >= 0) | |
6688 | return ret; | |
6689 | ||
6690 | ret = 0; | |
6691 | } | |
6692 | #endif | |
6693 | ||
6694 | for (i = 0; i < 2; i++) | |
6695 | { | |
6696 | temp[i] = fopen (cmpfile[i], "r"); | |
6697 | if (!temp[i]) | |
6698 | { | |
6699 | error ("%s: could not open compare-debug file %s", | |
6700 | gcc_input_filename, cmpfile[i]); | |
6701 | ret = 1; | |
6702 | break; | |
6703 | } | |
6704 | } | |
6705 | ||
6706 | if (!ret && temp[0] && temp[1]) | |
6707 | for (;;) | |
6708 | { | |
6709 | int c0, c1; | |
6710 | c0 = fgetc (temp[0]); | |
6711 | c1 = fgetc (temp[1]); | |
6712 | ||
6713 | if (c0 != c1) | |
6714 | { | |
6715 | error ("%s: -fcompare-debug failure", | |
6716 | gcc_input_filename); | |
6717 | ret = 1; | |
6718 | break; | |
6719 | } | |
6720 | ||
6721 | if (c0 == EOF) | |
6722 | break; | |
6723 | } | |
6724 | ||
6725 | for (i = 1; i >= 0; i--) | |
6726 | { | |
6727 | if (temp[i]) | |
6728 | fclose (temp[i]); | |
6729 | } | |
6730 | ||
6731 | return ret; | |
6732 | } | |
6733 | ||
6734 | /* The top-level "main" within the driver would be ~1000 lines long. | |
6735 | This class breaks it up into smaller functions and contains some | |
6736 | state shared by them. */ | |
6737 | ||
6738 | class driver | |
6739 | { | |
6740 | public: | |
6741 | int main (int argc, char **argv); | |
6742 | ||
6743 | private: | |
6744 | void set_progname (const char *argv0) const; | |
6745 | void expand_at_files (int *argc, char ***argv) const; | |
6746 | void decode_argv (int argc, const char **argv); | |
6747 | void global_initializations (); | |
6748 | void build_multilib_strings () const; | |
6749 | void set_up_specs () const; | |
6750 | void putenv_COLLECT_GCC (const char *argv0) const; | |
6751 | void maybe_putenv_COLLECT_LTO_WRAPPER () const; | |
6752 | void handle_unrecognized_options () const; | |
6753 | int maybe_print_and_exit () const; | |
6754 | bool prepare_infiles (); | |
6755 | void do_spec_on_infiles () const; | |
6756 | void maybe_run_linker (const char *argv0) const; | |
6757 | void final_actions () const; | |
6758 | int get_exit_code () const; | |
6759 | ||
6760 | private: | |
6761 | char *explicit_link_files; | |
6762 | struct cl_decoded_option *decoded_options; | |
6763 | unsigned int decoded_options_count; | |
6764 | }; | |
6765 | ||
6766 | /* Implement the top-level "main" within the driver in terms of | |
6767 | driver::main. */ | |
6768 | ||
6769 | extern int main (int, char **); | |
6770 | ||
6771 | int | |
6772 | main (int argc, char **argv) | |
6773 | { | |
6774 | driver d; | |
6775 | ||
6776 | return d.main (argc, argv); | |
6777 | } | |
6778 | ||
6779 | /* driver::main is implemented as a series of driver:: method calls. */ | |
6780 | ||
6781 | int | |
6782 | driver::main (int argc, char **argv) | |
6783 | { | |
6784 | bool early_exit; | |
6785 | ||
6786 | set_progname (argv[0]); | |
6787 | expand_at_files (&argc, &argv); | |
6788 | decode_argv (argc, const_cast <const char **> (argv)); | |
6789 | global_initializations (); | |
6790 | build_multilib_strings (); | |
6791 | set_up_specs (); | |
6792 | putenv_COLLECT_GCC (argv[0]); | |
6793 | maybe_putenv_COLLECT_LTO_WRAPPER (); | |
6794 | handle_unrecognized_options (); | |
6795 | ||
6796 | if (!maybe_print_and_exit ()) | |
6797 | return 0; | |
6798 | ||
6799 | early_exit = prepare_infiles (); | |
6800 | if (early_exit) | |
6801 | return get_exit_code (); | |
6802 | ||
6803 | do_spec_on_infiles (); | |
6804 | maybe_run_linker (argv[0]); | |
6805 | final_actions (); | |
6806 | return get_exit_code (); | |
6807 | } | |
6808 | ||
6809 | /* Locate the final component of argv[0] after any leading path, and set | |
6810 | the program name accordingly. */ | |
6811 | ||
6812 | void | |
6813 | driver::set_progname (const char *argv0) const | |
6814 | { | |
6815 | const char *p = argv0 + strlen (argv0); | |
6816 | while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
6817 | --p; | |
6818 | progname = p; | |
6819 | ||
6820 | xmalloc_set_program_name (progname); | |
6821 | } | |
6822 | ||
6823 | /* Expand any @ files within the command-line args, | |
6824 | setting at_file_supplied if any were expanded. */ | |
6825 | ||
6826 | void | |
6827 | driver::expand_at_files (int *argc, char ***argv) const | |
6828 | { | |
6829 | char **old_argv = *argv; | |
6830 | ||
6831 | expandargv (argc, argv); | |
6832 | ||
6833 | /* Determine if any expansions were made. */ | |
6834 | if (*argv != old_argv) | |
6835 | at_file_supplied = true; | |
6836 | } | |
6837 | ||
6838 | /* Decode the command-line arguments from argc/argv into the | |
6839 | decoded_options array. */ | |
6840 | ||
6841 | void | |
6842 | driver::decode_argv (int argc, const char **argv) | |
6843 | { | |
6844 | /* Register the language-independent parameters. */ | |
6845 | global_init_params (); | |
6846 | finish_params (); | |
6847 | ||
6848 | init_options_struct (&global_options, &global_options_set); | |
6849 | ||
6850 | decode_cmdline_options_to_array (argc, argv, | |
6851 | CL_DRIVER, | |
6852 | &decoded_options, &decoded_options_count); | |
6853 | } | |
6854 | ||
6855 | /* Perform various initializations and setup. */ | |
6856 | ||
6857 | void | |
6858 | driver::global_initializations () | |
6859 | { | |
6860 | /* Unlock the stdio streams. */ | |
6861 | unlock_std_streams (); | |
6862 | ||
6863 | gcc_init_libintl (); | |
6864 | ||
6865 | diagnostic_initialize (global_dc, 0); | |
6866 | ||
6867 | #ifdef GCC_DRIVER_HOST_INITIALIZATION | |
6868 | /* Perform host dependent initialization when needed. */ | |
6869 | GCC_DRIVER_HOST_INITIALIZATION; | |
6870 | #endif | |
6871 | ||
6872 | if (atexit (delete_temp_files) != 0) | |
6873 | fatal_error ("atexit failed"); | |
6874 | ||
6875 | if (signal (SIGINT, SIG_IGN) != SIG_IGN) | |
6876 | signal (SIGINT, fatal_signal); | |
6877 | #ifdef SIGHUP | |
6878 | if (signal (SIGHUP, SIG_IGN) != SIG_IGN) | |
6879 | signal (SIGHUP, fatal_signal); | |
6880 | #endif | |
6881 | if (signal (SIGTERM, SIG_IGN) != SIG_IGN) | |
6882 | signal (SIGTERM, fatal_signal); | |
6883 | #ifdef SIGPIPE | |
6884 | if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) | |
6885 | signal (SIGPIPE, fatal_signal); | |
6886 | #endif | |
6887 | #ifdef SIGCHLD | |
6888 | /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will | |
6889 | receive the signal. A different setting is inheritable */ | |
6890 | signal (SIGCHLD, SIG_DFL); | |
6891 | #endif | |
6892 | ||
6893 | /* Parsing and gimplification sometimes need quite large stack. | |
6894 | Increase stack size limits if possible. */ | |
6895 | stack_limit_increase (64 * 1024 * 1024); | |
6896 | ||
6897 | /* Allocate the argument vector. */ | |
6898 | alloc_args (); | |
6899 | ||
6900 | obstack_init (&obstack); | |
6901 | } | |
6902 | ||
6903 | /* Build multilib_select, et. al from the separate lines that make up each | |
6904 | multilib selection. */ | |
6905 | ||
6906 | void | |
6907 | driver::build_multilib_strings () const | |
6908 | { | |
6909 | { | |
6910 | const char *p; | |
6911 | const char *const *q = multilib_raw; | |
6912 | int need_space; | |
6913 | ||
6914 | obstack_init (&multilib_obstack); | |
6915 | while ((p = *q++) != (char *) 0) | |
6916 | obstack_grow (&multilib_obstack, p, strlen (p)); | |
6917 | ||
6918 | obstack_1grow (&multilib_obstack, 0); | |
6919 | multilib_select = XOBFINISH (&multilib_obstack, const char *); | |
6920 | ||
6921 | q = multilib_matches_raw; | |
6922 | while ((p = *q++) != (char *) 0) | |
6923 | obstack_grow (&multilib_obstack, p, strlen (p)); | |
6924 | ||
6925 | obstack_1grow (&multilib_obstack, 0); | |
6926 | multilib_matches = XOBFINISH (&multilib_obstack, const char *); | |
6927 | ||
6928 | q = multilib_exclusions_raw; | |
6929 | while ((p = *q++) != (char *) 0) | |
6930 | obstack_grow (&multilib_obstack, p, strlen (p)); | |
6931 | ||
6932 | obstack_1grow (&multilib_obstack, 0); | |
6933 | multilib_exclusions = XOBFINISH (&multilib_obstack, const char *); | |
6934 | ||
6935 | q = multilib_reuse_raw; | |
6936 | while ((p = *q++) != (char *) 0) | |
6937 | obstack_grow (&multilib_obstack, p, strlen (p)); | |
6938 | ||
6939 | obstack_1grow (&multilib_obstack, 0); | |
6940 | multilib_reuse = XOBFINISH (&multilib_obstack, const char *); | |
6941 | ||
6942 | need_space = FALSE; | |
6943 | for (size_t i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) | |
6944 | { | |
6945 | if (need_space) | |
6946 | obstack_1grow (&multilib_obstack, ' '); | |
6947 | obstack_grow (&multilib_obstack, | |
6948 | multilib_defaults_raw[i], | |
6949 | strlen (multilib_defaults_raw[i])); | |
6950 | need_space = TRUE; | |
6951 | } | |
6952 | ||
6953 | obstack_1grow (&multilib_obstack, 0); | |
6954 | multilib_defaults = XOBFINISH (&multilib_obstack, const char *); | |
6955 | } | |
6956 | } | |
6957 | ||
6958 | /* Set up the spec-handling machinery. */ | |
6959 | ||
6960 | void | |
6961 | driver::set_up_specs () const | |
6962 | { | |
6963 | char *specs_file; | |
6964 | size_t i; | |
6965 | ||
6966 | #ifdef INIT_ENVIRONMENT | |
6967 | /* Set up any other necessary machine specific environment variables. */ | |
6968 | xputenv (INIT_ENVIRONMENT); | |
6969 | #endif | |
6970 | ||
6971 | /* Make a table of what switches there are (switches, n_switches). | |
6972 | Make a table of specified input files (infiles, n_infiles). | |
6973 | Decode switches that are handled locally. */ | |
6974 | ||
6975 | process_command (decoded_options_count, decoded_options); | |
6976 | ||
6977 | /* Initialize the vector of specs to just the default. | |
6978 | This means one element containing 0s, as a terminator. */ | |
6979 | ||
6980 | compilers = XNEWVAR (struct compiler, sizeof default_compilers); | |
6981 | memcpy (compilers, default_compilers, sizeof default_compilers); | |
6982 | n_compilers = n_default_compilers; | |
6983 | ||
6984 | /* Read specs from a file if there is one. */ | |
6985 | ||
6986 | machine_suffix = concat (spec_machine, dir_separator_str, | |
6987 | spec_version, dir_separator_str, NULL); | |
6988 | just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); | |
6989 | ||
6990 | specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true); | |
6991 | /* Read the specs file unless it is a default one. */ | |
6992 | if (specs_file != 0 && strcmp (specs_file, "specs")) | |
6993 | read_specs (specs_file, true, false); | |
6994 | else | |
6995 | init_spec (); | |
6996 | ||
6997 | /* We need to check standard_exec_prefix/just_machine_suffix/specs | |
6998 | for any override of as, ld and libraries. */ | |
6999 | specs_file = (char *) alloca (strlen (standard_exec_prefix) | |
7000 | + strlen (just_machine_suffix) + sizeof ("specs")); | |
7001 | ||
7002 | strcpy (specs_file, standard_exec_prefix); | |
7003 | strcat (specs_file, just_machine_suffix); | |
7004 | strcat (specs_file, "specs"); | |
7005 | if (access (specs_file, R_OK) == 0) | |
7006 | read_specs (specs_file, true, false); | |
7007 | ||
7008 | /* Process any configure-time defaults specified for the command line | |
7009 | options, via OPTION_DEFAULT_SPECS. */ | |
7010 | for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) | |
7011 | do_option_spec (option_default_specs[i].name, | |
7012 | option_default_specs[i].spec); | |
7013 | ||
7014 | /* Process DRIVER_SELF_SPECS, adding any new options to the end | |
7015 | of the command line. */ | |
7016 | ||
7017 | for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++) | |
7018 | do_self_spec (driver_self_specs[i]); | |
7019 | ||
7020 | /* If not cross-compiling, look for executables in the standard | |
7021 | places. */ | |
7022 | if (*cross_compile == '0') | |
7023 | { | |
7024 | if (*md_exec_prefix) | |
7025 | { | |
7026 | add_prefix (&exec_prefixes, md_exec_prefix, "GCC", | |
7027 | PREFIX_PRIORITY_LAST, 0, 0); | |
7028 | } | |
7029 | } | |
7030 | ||
7031 | /* Process sysroot_suffix_spec. */ | |
7032 | if (*sysroot_suffix_spec != 0 | |
7033 | && !no_sysroot_suffix | |
7034 | && do_spec_2 (sysroot_suffix_spec) == 0) | |
7035 | { | |
7036 | if (argbuf.length () > 1) | |
7037 | error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC"); | |
7038 | else if (argbuf.length () == 1) | |
7039 | target_sysroot_suffix = xstrdup (argbuf.last ()); | |
7040 | } | |
7041 | ||
7042 | #ifdef HAVE_LD_SYSROOT | |
7043 | /* Pass the --sysroot option to the linker, if it supports that. If | |
7044 | there is a sysroot_suffix_spec, it has already been processed by | |
7045 | this point, so target_system_root really is the system root we | |
7046 | should be using. */ | |
7047 | if (target_system_root) | |
7048 | { | |
7049 | obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) ")); | |
7050 | obstack_grow0 (&obstack, link_spec, strlen (link_spec)); | |
7051 | set_spec ("link", XOBFINISH (&obstack, const char *), false); | |
7052 | } | |
7053 | #endif | |
7054 | ||
7055 | /* Process sysroot_hdrs_suffix_spec. */ | |
7056 | if (*sysroot_hdrs_suffix_spec != 0 | |
7057 | && !no_sysroot_suffix | |
7058 | && do_spec_2 (sysroot_hdrs_suffix_spec) == 0) | |
7059 | { | |
7060 | if (argbuf.length () > 1) | |
7061 | error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC"); | |
7062 | else if (argbuf.length () == 1) | |
7063 | target_sysroot_hdrs_suffix = xstrdup (argbuf.last ()); | |
7064 | } | |
7065 | ||
7066 | /* Look for startfiles in the standard places. */ | |
7067 | if (*startfile_prefix_spec != 0 | |
7068 | && do_spec_2 (startfile_prefix_spec) == 0 | |
7069 | && do_spec_1 (" ", 0, NULL) == 0) | |
7070 | { | |
7071 | const char *arg; | |
7072 | int ndx; | |
7073 | FOR_EACH_VEC_ELT (argbuf, ndx, arg) | |
7074 | add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS", | |
7075 | PREFIX_PRIORITY_LAST, 0, 1); | |
7076 | } | |
7077 | /* We should eventually get rid of all these and stick to | |
7078 | startfile_prefix_spec exclusively. */ | |
7079 | else if (*cross_compile == '0' || target_system_root) | |
7080 | { | |
7081 | if (*md_startfile_prefix) | |
7082 | add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix, | |
7083 | "GCC", PREFIX_PRIORITY_LAST, 0, 1); | |
7084 | ||
7085 | if (*md_startfile_prefix_1) | |
7086 | add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1, | |
7087 | "GCC", PREFIX_PRIORITY_LAST, 0, 1); | |
7088 | ||
7089 | /* If standard_startfile_prefix is relative, base it on | |
7090 | standard_exec_prefix. This lets us move the installed tree | |
7091 | as a unit. If GCC_EXEC_PREFIX is defined, base | |
7092 | standard_startfile_prefix on that as well. | |
7093 | ||
7094 | If the prefix is relative, only search it for native compilers; | |
7095 | otherwise we will search a directory containing host libraries. */ | |
7096 | if (IS_ABSOLUTE_PATH (standard_startfile_prefix)) | |
7097 | add_sysrooted_prefix (&startfile_prefixes, | |
7098 | standard_startfile_prefix, "BINUTILS", | |
7099 | PREFIX_PRIORITY_LAST, 0, 1); | |
7100 | else if (*cross_compile == '0') | |
7101 | { | |
7102 | add_prefix (&startfile_prefixes, | |
7103 | concat (gcc_exec_prefix | |
7104 | ? gcc_exec_prefix : standard_exec_prefix, | |
7105 | machine_suffix, | |
7106 | standard_startfile_prefix, NULL), | |
7107 | NULL, PREFIX_PRIORITY_LAST, 0, 1); | |
7108 | } | |
7109 | ||
7110 | /* Sysrooted prefixes are relocated because target_system_root is | |
7111 | also relocated by gcc_exec_prefix. */ | |
7112 | if (*standard_startfile_prefix_1) | |
7113 | add_sysrooted_prefix (&startfile_prefixes, | |
7114 | standard_startfile_prefix_1, "BINUTILS", | |
7115 | PREFIX_PRIORITY_LAST, 0, 1); | |
7116 | if (*standard_startfile_prefix_2) | |
7117 | add_sysrooted_prefix (&startfile_prefixes, | |
7118 | standard_startfile_prefix_2, "BINUTILS", | |
7119 | PREFIX_PRIORITY_LAST, 0, 1); | |
7120 | } | |
7121 | ||
7122 | /* Process any user specified specs in the order given on the command | |
7123 | line. */ | |
7124 | for (struct user_specs *uptr = user_specs_head; uptr; uptr = uptr->next) | |
7125 | { | |
7126 | char *filename = find_a_file (&startfile_prefixes, uptr->filename, | |
7127 | R_OK, true); | |
7128 | read_specs (filename ? filename : uptr->filename, false, true); | |
7129 | } | |
7130 | ||
7131 | /* Process any user self specs. */ | |
7132 | { | |
7133 | struct spec_list *sl; | |
7134 | for (sl = specs; sl; sl = sl->next) | |
7135 | if (sl->name_len == sizeof "self_spec" - 1 | |
7136 | && !strcmp (sl->name, "self_spec")) | |
7137 | do_self_spec (*sl->ptr_spec); | |
7138 | } | |
7139 | ||
7140 | if (compare_debug) | |
7141 | { | |
7142 | enum save_temps save; | |
7143 | ||
7144 | if (!compare_debug_second) | |
7145 | { | |
7146 | n_switches_debug_check[1] = n_switches; | |
7147 | n_switches_alloc_debug_check[1] = n_switches_alloc; | |
7148 | switches_debug_check[1] = XDUPVEC (struct switchstr, switches, | |
7149 | n_switches_alloc); | |
7150 | ||
7151 | do_self_spec ("%:compare-debug-self-opt()"); | |
7152 | n_switches_debug_check[0] = n_switches; | |
7153 | n_switches_alloc_debug_check[0] = n_switches_alloc; | |
7154 | switches_debug_check[0] = switches; | |
7155 | ||
7156 | n_switches = n_switches_debug_check[1]; | |
7157 | n_switches_alloc = n_switches_alloc_debug_check[1]; | |
7158 | switches = switches_debug_check[1]; | |
7159 | } | |
7160 | ||
7161 | /* Avoid crash when computing %j in this early. */ | |
7162 | save = save_temps_flag; | |
7163 | save_temps_flag = SAVE_TEMPS_NONE; | |
7164 | ||
7165 | compare_debug = -compare_debug; | |
7166 | do_self_spec ("%:compare-debug-self-opt()"); | |
7167 | ||
7168 | save_temps_flag = save; | |
7169 | ||
7170 | if (!compare_debug_second) | |
7171 | { | |
7172 | n_switches_debug_check[1] = n_switches; | |
7173 | n_switches_alloc_debug_check[1] = n_switches_alloc; | |
7174 | switches_debug_check[1] = switches; | |
7175 | compare_debug = -compare_debug; | |
7176 | n_switches = n_switches_debug_check[0]; | |
7177 | n_switches_alloc = n_switches_debug_check[0]; | |
7178 | switches = switches_debug_check[0]; | |
7179 | } | |
7180 | } | |
7181 | ||
7182 | ||
7183 | /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ | |
7184 | if (gcc_exec_prefix) | |
7185 | gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, | |
7186 | spec_version, dir_separator_str, NULL); | |
7187 | ||
7188 | /* Now we have the specs. | |
7189 | Set the `valid' bits for switches that match anything in any spec. */ | |
7190 | ||
7191 | validate_all_switches (); | |
7192 | ||
7193 | /* Now that we have the switches and the specs, set | |
7194 | the subdirectory based on the options. */ | |
7195 | set_multilib_dir (); | |
7196 | } | |
7197 | ||
7198 | /* Set up to remember the pathname of gcc and any options | |
7199 | needed for collect. We use argv[0] instead of progname because | |
7200 | we need the complete pathname. */ | |
7201 | ||
7202 | void | |
7203 | driver::putenv_COLLECT_GCC (const char *argv0) const | |
7204 | { | |
7205 | obstack_init (&collect_obstack); | |
7206 | obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1); | |
7207 | obstack_grow (&collect_obstack, argv0, strlen (argv0) + 1); | |
7208 | xputenv (XOBFINISH (&collect_obstack, char *)); | |
7209 | } | |
7210 | ||
7211 | /* Set up to remember the pathname of the lto wrapper. */ | |
7212 | ||
7213 | void | |
7214 | driver::maybe_putenv_COLLECT_LTO_WRAPPER () const | |
7215 | { | |
7216 | char *lto_wrapper_file; | |
7217 | ||
7218 | if (have_c) | |
7219 | lto_wrapper_file = NULL; | |
7220 | else | |
7221 | lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", | |
7222 | X_OK, false); | |
7223 | if (lto_wrapper_file) | |
7224 | { | |
7225 | lto_wrapper_file = convert_white_space (lto_wrapper_file); | |
7226 | lto_wrapper_spec = lto_wrapper_file; | |
7227 | obstack_init (&collect_obstack); | |
7228 | obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=", | |
7229 | sizeof ("COLLECT_LTO_WRAPPER=") - 1); | |
7230 | obstack_grow (&collect_obstack, lto_wrapper_spec, | |
7231 | strlen (lto_wrapper_spec) + 1); | |
7232 | xputenv (XOBFINISH (&collect_obstack, char *)); | |
7233 | } | |
7234 | ||
7235 | } | |
7236 | ||
7237 | /* Reject switches that no pass was interested in. */ | |
7238 | ||
7239 | void | |
7240 | driver::handle_unrecognized_options () const | |
7241 | { | |
7242 | for (size_t i = 0; (int) i < n_switches; i++) | |
7243 | if (! switches[i].validated) | |
7244 | error ("unrecognized command line option %<-%s%>", switches[i].part1); | |
7245 | } | |
7246 | ||
7247 | /* Handle the various -print-* options, returning 0 if the driver | |
7248 | should exit, or nonzero if the driver should continue. */ | |
7249 | ||
7250 | int | |
7251 | driver::maybe_print_and_exit () const | |
7252 | { | |
7253 | if (print_search_dirs) | |
7254 | { | |
7255 | printf (_("install: %s%s\n"), | |
7256 | gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, | |
7257 | gcc_exec_prefix ? "" : machine_suffix); | |
7258 | printf (_("programs: %s\n"), | |
7259 | build_search_list (&exec_prefixes, "", false, false)); | |
7260 | printf (_("libraries: %s\n"), | |
7261 | build_search_list (&startfile_prefixes, "", false, true)); | |
7262 | return (0); | |
7263 | } | |
7264 | ||
7265 | if (print_file_name) | |
7266 | { | |
7267 | printf ("%s\n", find_file (print_file_name)); | |
7268 | return (0); | |
7269 | } | |
7270 | ||
7271 | if (print_prog_name) | |
7272 | { | |
7273 | if (use_ld != NULL && ! strcmp (print_prog_name, "ld")) | |
7274 | { | |
7275 | /* Append USE_LD to to the default linker. */ | |
7276 | #ifdef DEFAULT_LINKER | |
7277 | char *ld; | |
7278 | # ifdef HAVE_HOST_EXECUTABLE_SUFFIX | |
7279 | int len = (sizeof (DEFAULT_LINKER) | |
7280 | - sizeof (HOST_EXECUTABLE_SUFFIX)); | |
7281 | ld = NULL; | |
7282 | if (len > 0) | |
7283 | { | |
7284 | char *default_linker = xstrdup (DEFAULT_LINKER); | |
7285 | /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains | |
7286 | HOST_EXECUTABLE_SUFFIX. */ | |
7287 | if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX)) | |
7288 | { | |
7289 | default_linker[len] = '\0'; | |
7290 | ld = concat (default_linker, use_ld, | |
7291 | HOST_EXECUTABLE_SUFFIX, NULL); | |
7292 | } | |
7293 | } | |
7294 | if (ld == NULL) | |
7295 | # endif | |
7296 | ld = concat (DEFAULT_LINKER, use_ld, NULL); | |
7297 | if (access (ld, X_OK) == 0) | |
7298 | { | |
7299 | printf ("%s\n", ld); | |
7300 | return (0); | |
7301 | } | |
7302 | #endif | |
7303 | print_prog_name = concat (print_prog_name, use_ld, NULL); | |
7304 | } | |
7305 | char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0); | |
7306 | printf ("%s\n", (newname ? newname : print_prog_name)); | |
7307 | return (0); | |
7308 | } | |
7309 | ||
7310 | if (print_multi_lib) | |
7311 | { | |
7312 | print_multilib_info (); | |
7313 | return (0); | |
7314 | } | |
7315 | ||
7316 | if (print_multi_directory) | |
7317 | { | |
7318 | if (multilib_dir == NULL) | |
7319 | printf (".\n"); | |
7320 | else | |
7321 | printf ("%s\n", multilib_dir); | |
7322 | return (0); | |
7323 | } | |
7324 | ||
7325 | if (print_multiarch) | |
7326 | { | |
7327 | if (multiarch_dir == NULL) | |
7328 | printf ("\n"); | |
7329 | else | |
7330 | printf ("%s\n", multiarch_dir); | |
7331 | return (0); | |
7332 | } | |
7333 | ||
7334 | if (print_sysroot) | |
7335 | { | |
7336 | if (target_system_root) | |
7337 | { | |
7338 | if (target_sysroot_suffix) | |
7339 | printf ("%s%s\n", target_system_root, target_sysroot_suffix); | |
7340 | else | |
7341 | printf ("%s\n", target_system_root); | |
7342 | } | |
7343 | return (0); | |
7344 | } | |
7345 | ||
7346 | if (print_multi_os_directory) | |
7347 | { | |
7348 | if (multilib_os_dir == NULL) | |
7349 | printf (".\n"); | |
7350 | else | |
7351 | printf ("%s\n", multilib_os_dir); | |
7352 | return (0); | |
7353 | } | |
7354 | ||
7355 | if (print_sysroot_headers_suffix) | |
7356 | { | |
7357 | if (*sysroot_hdrs_suffix_spec) | |
7358 | { | |
7359 | printf("%s\n", (target_sysroot_hdrs_suffix | |
7360 | ? target_sysroot_hdrs_suffix | |
7361 | : "")); | |
7362 | return (0); | |
7363 | } | |
7364 | else | |
7365 | /* The error status indicates that only one set of fixed | |
7366 | headers should be built. */ | |
7367 | fatal_error ("not configured with sysroot headers suffix"); | |
7368 | } | |
7369 | ||
7370 | if (print_help_list) | |
7371 | { | |
7372 | display_help (); | |
7373 | ||
7374 | if (! verbose_flag) | |
7375 | { | |
7376 | printf (_("\nFor bug reporting instructions, please see:\n")); | |
7377 | printf ("%s.\n", bug_report_url); | |
7378 | ||
7379 | return (0); | |
7380 | } | |
7381 | ||
7382 | /* We do not exit here. Instead we have created a fake input file | |
7383 | called 'help-dummy' which needs to be compiled, and we pass this | |
7384 | on the various sub-processes, along with the --help switch. | |
7385 | Ensure their output appears after ours. */ | |
7386 | fputc ('\n', stdout); | |
7387 | fflush (stdout); | |
7388 | } | |
7389 | ||
7390 | if (print_version) | |
7391 | { | |
7392 | printf (_("%s %s%s\n"), progname, pkgversion_string, | |
7393 | version_string); | |
7394 | printf ("Copyright %s 2014 Free Software Foundation, Inc.\n", | |
7395 | _("(C)")); | |
7396 | fputs (_("This is free software; see the source for copying conditions. There is NO\n\ | |
7397 | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), | |
7398 | stdout); | |
7399 | if (! verbose_flag) | |
7400 | return 0; | |
7401 | ||
7402 | /* We do not exit here. We use the same mechanism of --help to print | |
7403 | the version of the sub-processes. */ | |
7404 | fputc ('\n', stdout); | |
7405 | fflush (stdout); | |
7406 | } | |
7407 | ||
7408 | if (verbose_flag) | |
7409 | { | |
7410 | print_configuration (stderr); | |
7411 | if (n_infiles == 0) | |
7412 | return (0); | |
7413 | } | |
7414 | ||
7415 | return 1; | |
7416 | } | |
7417 | ||
7418 | /* Figure out what to do with each input file. | |
7419 | Return true if we need to exit early from "main", false otherwise. */ | |
7420 | ||
7421 | bool | |
7422 | driver::prepare_infiles () | |
7423 | { | |
7424 | size_t i; | |
7425 | int lang_n_infiles = 0; | |
7426 | ||
7427 | if (n_infiles == added_libraries) | |
7428 | fatal_error ("no input files"); | |
7429 | ||
7430 | if (seen_error ()) | |
7431 | /* Early exit needed from main. */ | |
7432 | return true; | |
7433 | ||
7434 | /* Make a place to record the compiler output file names | |
7435 | that correspond to the input files. */ | |
7436 | ||
7437 | i = n_infiles; | |
7438 | i += lang_specific_extra_outfiles; | |
7439 | outfiles = XCNEWVEC (const char *, i); | |
7440 | ||
7441 | /* Record which files were specified explicitly as link input. */ | |
7442 | ||
7443 | explicit_link_files = XCNEWVEC (char, n_infiles); | |
7444 | ||
7445 | combine_inputs = have_o || flag_wpa; | |
7446 | ||
7447 | for (i = 0; (int) i < n_infiles; i++) | |
7448 | { | |
7449 | const char *name = infiles[i].name; | |
7450 | struct compiler *compiler = lookup_compiler (name, | |
7451 | strlen (name), | |
7452 | infiles[i].language); | |
7453 | ||
7454 | if (compiler && !(compiler->combinable)) | |
7455 | combine_inputs = false; | |
7456 | ||
7457 | if (lang_n_infiles > 0 && compiler != input_file_compiler | |
7458 | && infiles[i].language && infiles[i].language[0] != '*') | |
7459 | infiles[i].incompiler = compiler; | |
7460 | else if (compiler) | |
7461 | { | |
7462 | lang_n_infiles++; | |
7463 | input_file_compiler = compiler; | |
7464 | infiles[i].incompiler = compiler; | |
7465 | } | |
7466 | else | |
7467 | { | |
7468 | /* Since there is no compiler for this input file, assume it is a | |
7469 | linker file. */ | |
7470 | explicit_link_files[i] = 1; | |
7471 | infiles[i].incompiler = NULL; | |
7472 | } | |
7473 | infiles[i].compiled = false; | |
7474 | infiles[i].preprocessed = false; | |
7475 | } | |
7476 | ||
7477 | if (!combine_inputs && have_c && have_o && lang_n_infiles > 1) | |
7478 | fatal_error ("cannot specify -o with -c, -S or -E with multiple files"); | |
7479 | ||
7480 | /* No early exit needed from main; we can continue. */ | |
7481 | return false; | |
7482 | } | |
7483 | ||
7484 | /* Run the spec machinery on each input file. */ | |
7485 | ||
7486 | void | |
7487 | driver::do_spec_on_infiles () const | |
7488 | { | |
7489 | size_t i; | |
7490 | ||
7491 | for (i = 0; (int) i < n_infiles; i++) | |
7492 | { | |
7493 | int this_file_error = 0; | |
7494 | ||
7495 | /* Tell do_spec what to substitute for %i. */ | |
7496 | ||
7497 | input_file_number = i; | |
7498 | set_input (infiles[i].name); | |
7499 | ||
7500 | if (infiles[i].compiled) | |
7501 | continue; | |
7502 | ||
7503 | /* Use the same thing in %o, unless cp->spec says otherwise. */ | |
7504 | ||
7505 | outfiles[i] = gcc_input_filename; | |
7506 | ||
7507 | /* Figure out which compiler from the file's suffix. */ | |
7508 | ||
7509 | input_file_compiler | |
7510 | = lookup_compiler (infiles[i].name, input_filename_length, | |
7511 | infiles[i].language); | |
7512 | ||
7513 | if (input_file_compiler) | |
7514 | { | |
7515 | /* Ok, we found an applicable compiler. Run its spec. */ | |
7516 | ||
7517 | if (input_file_compiler->spec[0] == '#') | |
7518 | { | |
7519 | error ("%s: %s compiler not installed on this system", | |
7520 | gcc_input_filename, &input_file_compiler->spec[1]); | |
7521 | this_file_error = 1; | |
7522 | } | |
7523 | else | |
7524 | { | |
7525 | int value; | |
7526 | ||
7527 | if (compare_debug) | |
7528 | { | |
7529 | free (debug_check_temp_file[0]); | |
7530 | debug_check_temp_file[0] = NULL; | |
7531 | ||
7532 | free (debug_check_temp_file[1]); | |
7533 | debug_check_temp_file[1] = NULL; | |
7534 | } | |
7535 | ||
7536 | value = do_spec (input_file_compiler->spec); | |
7537 | infiles[i].compiled = true; | |
7538 | if (value < 0) | |
7539 | this_file_error = 1; | |
7540 | else if (compare_debug && debug_check_temp_file[0]) | |
7541 | { | |
7542 | if (verbose_flag) | |
7543 | inform (0, "recompiling with -fcompare-debug"); | |
7544 | ||
7545 | compare_debug = -compare_debug; | |
7546 | n_switches = n_switches_debug_check[1]; | |
7547 | n_switches_alloc = n_switches_alloc_debug_check[1]; | |
7548 | switches = switches_debug_check[1]; | |
7549 | ||
7550 | value = do_spec (input_file_compiler->spec); | |
7551 | ||
7552 | compare_debug = -compare_debug; | |
7553 | n_switches = n_switches_debug_check[0]; | |
7554 | n_switches_alloc = n_switches_alloc_debug_check[0]; | |
7555 | switches = switches_debug_check[0]; | |
7556 | ||
7557 | if (value < 0) | |
7558 | { | |
7559 | error ("during -fcompare-debug recompilation"); | |
7560 | this_file_error = 1; | |
7561 | } | |
7562 | ||
7563 | gcc_assert (debug_check_temp_file[1] | |
7564 | && filename_cmp (debug_check_temp_file[0], | |
7565 | debug_check_temp_file[1])); | |
7566 | ||
7567 | if (verbose_flag) | |
7568 | inform (0, "comparing final insns dumps"); | |
7569 | ||
7570 | if (compare_files (debug_check_temp_file)) | |
7571 | this_file_error = 1; | |
7572 | } | |
7573 | ||
7574 | if (compare_debug) | |
7575 | { | |
7576 | free (debug_check_temp_file[0]); | |
7577 | debug_check_temp_file[0] = NULL; | |
7578 | ||
7579 | free (debug_check_temp_file[1]); | |
7580 | debug_check_temp_file[1] = NULL; | |
7581 | } | |
7582 | } | |
7583 | } | |
7584 | ||
7585 | /* If this file's name does not contain a recognized suffix, | |
7586 | record it as explicit linker input. */ | |
7587 | ||
7588 | else | |
7589 | explicit_link_files[i] = 1; | |
7590 | ||
7591 | /* Clear the delete-on-failure queue, deleting the files in it | |
7592 | if this compilation failed. */ | |
7593 | ||
7594 | if (this_file_error) | |
7595 | { | |
7596 | delete_failure_queue (); | |
7597 | errorcount++; | |
7598 | } | |
7599 | /* If this compilation succeeded, don't delete those files later. */ | |
7600 | clear_failure_queue (); | |
7601 | } | |
7602 | ||
7603 | /* Reset the input file name to the first compile/object file name, for use | |
7604 | with %b in LINK_SPEC. We use the first input file that we can find | |
7605 | a compiler to compile it instead of using infiles.language since for | |
7606 | languages other than C we use aliases that we then lookup later. */ | |
7607 | if (n_infiles > 0) | |
7608 | { | |
7609 | int i; | |
7610 | ||
7611 | for (i = 0; i < n_infiles ; i++) | |
7612 | if (infiles[i].incompiler | |
7613 | || (infiles[i].language && infiles[i].language[0] != '*')) | |
7614 | { | |
7615 | set_input (infiles[i].name); | |
7616 | break; | |
7617 | } | |
7618 | } | |
7619 | ||
7620 | if (!seen_error ()) | |
7621 | { | |
7622 | /* Make sure INPUT_FILE_NUMBER points to first available open | |
7623 | slot. */ | |
7624 | input_file_number = n_infiles; | |
7625 | if (lang_specific_pre_link ()) | |
7626 | errorcount++; | |
7627 | } | |
7628 | } | |
7629 | ||
7630 | /* If we have to run the linker, do it now. */ | |
7631 | ||
7632 | void | |
7633 | driver::maybe_run_linker (const char *argv0) const | |
7634 | { | |
7635 | size_t i; | |
7636 | int linker_was_run = 0; | |
7637 | int num_linker_inputs; | |
7638 | ||
7639 | /* Determine if there are any linker input files. */ | |
7640 | num_linker_inputs = 0; | |
7641 | for (i = 0; (int) i < n_infiles; i++) | |
7642 | if (explicit_link_files[i] || outfiles[i] != NULL) | |
7643 | num_linker_inputs++; | |
7644 | ||
7645 | /* Run ld to link all the compiler output files. */ | |
7646 | ||
7647 | if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2) | |
7648 | { | |
7649 | int tmp = execution_count; | |
7650 | ||
7651 | if (! have_c) | |
7652 | { | |
7653 | #if HAVE_LTO_PLUGIN > 0 | |
7654 | #if HAVE_LTO_PLUGIN == 2 | |
7655 | const char *fno_use_linker_plugin = "fno-use-linker-plugin"; | |
7656 | #else | |
7657 | const char *fuse_linker_plugin = "fuse-linker-plugin"; | |
7658 | #endif | |
7659 | #endif | |
7660 | ||
7661 | /* We'll use ld if we can't find collect2. */ | |
7662 | if (! strcmp (linker_name_spec, "collect2")) | |
7663 | { | |
7664 | char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false); | |
7665 | if (s == NULL) | |
7666 | linker_name_spec = "ld"; | |
7667 | } | |
7668 | ||
7669 | #if HAVE_LTO_PLUGIN > 0 | |
7670 | #if HAVE_LTO_PLUGIN == 2 | |
7671 | if (!switch_matches (fno_use_linker_plugin, | |
7672 | fno_use_linker_plugin | |
7673 | + strlen (fno_use_linker_plugin), 0)) | |
7674 | #else | |
7675 | if (switch_matches (fuse_linker_plugin, | |
7676 | fuse_linker_plugin | |
7677 | + strlen (fuse_linker_plugin), 0)) | |
7678 | #endif | |
7679 | { | |
7680 | char *temp_spec = find_a_file (&exec_prefixes, | |
7681 | LTOPLUGINSONAME, R_OK, | |
7682 | false); | |
7683 | if (!temp_spec) | |
7684 | fatal_error ("-fuse-linker-plugin, but %s not found", | |
7685 | LTOPLUGINSONAME); | |
7686 | linker_plugin_file_spec = convert_white_space (temp_spec); | |
7687 | } | |
7688 | #endif | |
7689 | lto_gcc_spec = argv0; | |
7690 | } | |
7691 | ||
7692 | /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables | |
7693 | for collect. */ | |
7694 | putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false); | |
7695 | putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true); | |
7696 | ||
7697 | if (print_subprocess_help == 1) | |
7698 | { | |
7699 | printf (_("\nLinker options\n==============\n\n")); | |
7700 | printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\"" | |
7701 | " to the linker.\n\n")); | |
7702 | fflush (stdout); | |
7703 | } | |
7704 | int value = do_spec (link_command_spec); | |
7705 | if (value < 0) | |
7706 | errorcount = 1; | |
7707 | linker_was_run = (tmp != execution_count); | |
7708 | } | |
7709 | ||
7710 | /* If options said don't run linker, | |
7711 | complain about input files to be given to the linker. */ | |
7712 | ||
7713 | if (! linker_was_run && !seen_error ()) | |
7714 | for (i = 0; (int) i < n_infiles; i++) | |
7715 | if (explicit_link_files[i] | |
7716 | && !(infiles[i].language && infiles[i].language[0] == '*')) | |
7717 | warning (0, "%s: linker input file unused because linking not done", | |
7718 | outfiles[i]); | |
7719 | } | |
7720 | ||
7721 | /* The end of "main". */ | |
7722 | ||
7723 | void | |
7724 | driver::final_actions () const | |
7725 | { | |
7726 | /* Delete some or all of the temporary files we made. */ | |
7727 | ||
7728 | if (seen_error ()) | |
7729 | delete_failure_queue (); | |
7730 | delete_temp_files (); | |
7731 | ||
7732 | if (print_help_list) | |
7733 | { | |
7734 | printf (("\nFor bug reporting instructions, please see:\n")); | |
7735 | printf ("%s\n", bug_report_url); | |
7736 | } | |
7737 | } | |
7738 | ||
7739 | /* Determine what the exit code of the driver should be. */ | |
7740 | ||
7741 | int | |
7742 | driver::get_exit_code () const | |
7743 | { | |
7744 | return (signal_count != 0 ? 2 | |
7745 | : seen_error () ? (pass_exit_codes ? greatest_status : 1) | |
7746 | : 0); | |
7747 | } | |
7748 | ||
7749 | /* Find the proper compilation spec for the file name NAME, | |
7750 | whose length is LENGTH. LANGUAGE is the specified language, | |
7751 | or 0 if this file is to be passed to the linker. */ | |
7752 | ||
7753 | static struct compiler * | |
7754 | lookup_compiler (const char *name, size_t length, const char *language) | |
7755 | { | |
7756 | struct compiler *cp; | |
7757 | ||
7758 | /* If this was specified by the user to be a linker input, indicate that. */ | |
7759 | if (language != 0 && language[0] == '*') | |
7760 | return 0; | |
7761 | ||
7762 | /* Otherwise, look for the language, if one is spec'd. */ | |
7763 | if (language != 0) | |
7764 | { | |
7765 | for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) | |
7766 | if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language)) | |
7767 | return cp; | |
7768 | ||
7769 | error ("language %s not recognized", language); | |
7770 | return 0; | |
7771 | } | |
7772 | ||
7773 | /* Look for a suffix. */ | |
7774 | for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) | |
7775 | { | |
7776 | if (/* The suffix `-' matches only the file name `-'. */ | |
7777 | (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) | |
7778 | || (strlen (cp->suffix) < length | |
7779 | /* See if the suffix matches the end of NAME. */ | |
7780 | && !strcmp (cp->suffix, | |
7781 | name + length - strlen (cp->suffix)) | |
7782 | )) | |
7783 | break; | |
7784 | } | |
7785 | ||
7786 | #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) | |
7787 | /* Look again, but case-insensitively this time. */ | |
7788 | if (cp < compilers) | |
7789 | for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) | |
7790 | { | |
7791 | if (/* The suffix `-' matches only the file name `-'. */ | |
7792 | (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) | |
7793 | || (strlen (cp->suffix) < length | |
7794 | /* See if the suffix matches the end of NAME. */ | |
7795 | && ((!strcmp (cp->suffix, | |
7796 | name + length - strlen (cp->suffix)) | |
7797 | || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) | |
7798 | && !strcasecmp (cp->suffix, | |
7799 | name + length - strlen (cp->suffix))) | |
7800 | )) | |
7801 | break; | |
7802 | } | |
7803 | #endif | |
7804 | ||
7805 | if (cp >= compilers) | |
7806 | { | |
7807 | if (cp->spec[0] != '@') | |
7808 | /* A non-alias entry: return it. */ | |
7809 | return cp; | |
7810 | ||
7811 | /* An alias entry maps a suffix to a language. | |
7812 | Search for the language; pass 0 for NAME and LENGTH | |
7813 | to avoid infinite recursion if language not found. */ | |
7814 | return lookup_compiler (NULL, 0, cp->spec + 1); | |
7815 | } | |
7816 | return 0; | |
7817 | } | |
7818 | \f | |
7819 | static char * | |
7820 | save_string (const char *s, int len) | |
7821 | { | |
7822 | char *result = XNEWVEC (char, len + 1); | |
7823 | ||
7824 | memcpy (result, s, len); | |
7825 | result[len] = 0; | |
7826 | return result; | |
7827 | } | |
7828 | ||
7829 | void | |
7830 | pfatal_with_name (const char *name) | |
7831 | { | |
7832 | perror_with_name (name); | |
7833 | delete_temp_files (); | |
7834 | exit (1); | |
7835 | } | |
7836 | ||
7837 | static void | |
7838 | perror_with_name (const char *name) | |
7839 | { | |
7840 | error ("%s: %m", name); | |
7841 | } | |
7842 | \f | |
7843 | static inline void | |
7844 | validate_switches_from_spec (const char *spec, bool user) | |
7845 | { | |
7846 | const char *p = spec; | |
7847 | char c; | |
7848 | while ((c = *p++)) | |
7849 | if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{'))) | |
7850 | /* We have a switch spec. */ | |
7851 | p = validate_switches (p + 1, user); | |
7852 | } | |
7853 | ||
7854 | static void | |
7855 | validate_all_switches (void) | |
7856 | { | |
7857 | struct compiler *comp; | |
7858 | struct spec_list *spec; | |
7859 | ||
7860 | for (comp = compilers; comp->spec; comp++) | |
7861 | validate_switches_from_spec (comp->spec, false); | |
7862 | ||
7863 | /* Look through the linked list of specs read from the specs file. */ | |
7864 | for (spec = specs; spec; spec = spec->next) | |
7865 | validate_switches_from_spec (*spec->ptr_spec, spec->user_p); | |
7866 | ||
7867 | validate_switches_from_spec (link_command_spec, false); | |
7868 | } | |
7869 | ||
7870 | /* Look at the switch-name that comes after START | |
7871 | and mark as valid all supplied switches that match it. */ | |
7872 | ||
7873 | static const char * | |
7874 | validate_switches (const char *start, bool user_spec) | |
7875 | { | |
7876 | const char *p = start; | |
7877 | const char *atom; | |
7878 | size_t len; | |
7879 | int i; | |
7880 | bool suffix = false; | |
7881 | bool starred = false; | |
7882 | ||
7883 | #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) | |
7884 | ||
7885 | next_member: | |
7886 | SKIP_WHITE (); | |
7887 | ||
7888 | if (*p == '!') | |
7889 | p++; | |
7890 | ||
7891 | SKIP_WHITE (); | |
7892 | if (*p == '.' || *p == ',') | |
7893 | suffix = true, p++; | |
7894 | ||
7895 | atom = p; | |
7896 | while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' | |
7897 | || *p == ',' || *p == '.' || *p == '@') | |
7898 | p++; | |
7899 | len = p - atom; | |
7900 | ||
7901 | if (*p == '*') | |
7902 | starred = true, p++; | |
7903 | ||
7904 | SKIP_WHITE (); | |
7905 | ||
7906 | if (!suffix) | |
7907 | { | |
7908 | /* Mark all matching switches as valid. */ | |
7909 | for (i = 0; i < n_switches; i++) | |
7910 | if (!strncmp (switches[i].part1, atom, len) | |
7911 | && (starred || switches[i].part1[len] == '\0') | |
7912 | && (switches[i].known || user_spec)) | |
7913 | switches[i].validated = true; | |
7914 | } | |
7915 | ||
7916 | if (*p) p++; | |
7917 | if (*p && (p[-1] == '|' || p[-1] == '&')) | |
7918 | goto next_member; | |
7919 | ||
7920 | if (*p && p[-1] == ':') | |
7921 | { | |
7922 | while (*p && *p != ';' && *p != '}') | |
7923 | { | |
7924 | if (*p == '%') | |
7925 | { | |
7926 | p++; | |
7927 | if (*p == '{' || *p == '<') | |
7928 | p = validate_switches (p+1, user_spec); | |
7929 | else if (p[0] == 'W' && p[1] == '{') | |
7930 | p = validate_switches (p+2, user_spec); | |
7931 | } | |
7932 | else | |
7933 | p++; | |
7934 | } | |
7935 | ||
7936 | if (*p) p++; | |
7937 | if (*p && p[-1] == ';') | |
7938 | goto next_member; | |
7939 | } | |
7940 | ||
7941 | return p; | |
7942 | #undef SKIP_WHITE | |
7943 | } | |
7944 | \f | |
7945 | struct mdswitchstr | |
7946 | { | |
7947 | const char *str; | |
7948 | int len; | |
7949 | }; | |
7950 | ||
7951 | static struct mdswitchstr *mdswitches; | |
7952 | static int n_mdswitches; | |
7953 | ||
7954 | /* Check whether a particular argument was used. The first time we | |
7955 | canonicalize the switches to keep only the ones we care about. */ | |
7956 | ||
7957 | static int | |
7958 | used_arg (const char *p, int len) | |
7959 | { | |
7960 | struct mswitchstr | |
7961 | { | |
7962 | const char *str; | |
7963 | const char *replace; | |
7964 | int len; | |
7965 | int rep_len; | |
7966 | }; | |
7967 | ||
7968 | static struct mswitchstr *mswitches; | |
7969 | static int n_mswitches; | |
7970 | int i, j; | |
7971 | ||
7972 | if (!mswitches) | |
7973 | { | |
7974 | struct mswitchstr *matches; | |
7975 | const char *q; | |
7976 | int cnt = 0; | |
7977 | ||
7978 | /* Break multilib_matches into the component strings of string | |
7979 | and replacement string. */ | |
7980 | for (q = multilib_matches; *q != '\0'; q++) | |
7981 | if (*q == ';') | |
7982 | cnt++; | |
7983 | ||
7984 | matches | |
7985 | = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt); | |
7986 | i = 0; | |
7987 | q = multilib_matches; | |
7988 | while (*q != '\0') | |
7989 | { | |
7990 | matches[i].str = q; | |
7991 | while (*q != ' ') | |
7992 | { | |
7993 | if (*q == '\0') | |
7994 | { | |
7995 | invalid_matches: | |
7996 | fatal_error ("multilib spec %qs is invalid", | |
7997 | multilib_matches); | |
7998 | } | |
7999 | q++; | |
8000 | } | |
8001 | matches[i].len = q - matches[i].str; | |
8002 | ||
8003 | matches[i].replace = ++q; | |
8004 | while (*q != ';' && *q != '\0') | |
8005 | { | |
8006 | if (*q == ' ') | |
8007 | goto invalid_matches; | |
8008 | q++; | |
8009 | } | |
8010 | matches[i].rep_len = q - matches[i].replace; | |
8011 | i++; | |
8012 | if (*q == ';') | |
8013 | q++; | |
8014 | } | |
8015 | ||
8016 | /* Now build a list of the replacement string for switches that we care | |
8017 | about. Make sure we allocate at least one entry. This prevents | |
8018 | xmalloc from calling fatal, and prevents us from re-executing this | |
8019 | block of code. */ | |
8020 | mswitches | |
8021 | = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1)); | |
8022 | for (i = 0; i < n_switches; i++) | |
8023 | if ((switches[i].live_cond & SWITCH_IGNORE) == 0) | |
8024 | { | |
8025 | int xlen = strlen (switches[i].part1); | |
8026 | for (j = 0; j < cnt; j++) | |
8027 | if (xlen == matches[j].len | |
8028 | && ! strncmp (switches[i].part1, matches[j].str, xlen)) | |
8029 | { | |
8030 | mswitches[n_mswitches].str = matches[j].replace; | |
8031 | mswitches[n_mswitches].len = matches[j].rep_len; | |
8032 | mswitches[n_mswitches].replace = (char *) 0; | |
8033 | mswitches[n_mswitches].rep_len = 0; | |
8034 | n_mswitches++; | |
8035 | break; | |
8036 | } | |
8037 | } | |
8038 | ||
8039 | /* Add MULTILIB_DEFAULTS switches too, as long as they were not present | |
8040 | on the command line nor any options mutually incompatible with | |
8041 | them. */ | |
8042 | for (i = 0; i < n_mdswitches; i++) | |
8043 | { | |
8044 | const char *r; | |
8045 | ||
8046 | for (q = multilib_options; *q != '\0'; *q && q++) | |
8047 | { | |
8048 | while (*q == ' ') | |
8049 | q++; | |
8050 | ||
8051 | r = q; | |
8052 | while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0 | |
8053 | || strchr (" /", q[mdswitches[i].len]) == NULL) | |
8054 | { | |
8055 | while (*q != ' ' && *q != '/' && *q != '\0') | |
8056 | q++; | |
8057 | if (*q != '/') | |
8058 | break; | |
8059 | q++; | |
8060 | } | |
8061 | ||
8062 | if (*q != ' ' && *q != '\0') | |
8063 | { | |
8064 | while (*r != ' ' && *r != '\0') | |
8065 | { | |
8066 | q = r; | |
8067 | while (*q != ' ' && *q != '/' && *q != '\0') | |
8068 | q++; | |
8069 | ||
8070 | if (used_arg (r, q - r)) | |
8071 | break; | |
8072 | ||
8073 | if (*q != '/') | |
8074 | { | |
8075 | mswitches[n_mswitches].str = mdswitches[i].str; | |
8076 | mswitches[n_mswitches].len = mdswitches[i].len; | |
8077 | mswitches[n_mswitches].replace = (char *) 0; | |
8078 | mswitches[n_mswitches].rep_len = 0; | |
8079 | n_mswitches++; | |
8080 | break; | |
8081 | } | |
8082 | ||
8083 | r = q + 1; | |
8084 | } | |
8085 | break; | |
8086 | } | |
8087 | } | |
8088 | } | |
8089 | } | |
8090 | ||
8091 | for (i = 0; i < n_mswitches; i++) | |
8092 | if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len)) | |
8093 | return 1; | |
8094 | ||
8095 | return 0; | |
8096 | } | |
8097 | ||
8098 | static int | |
8099 | default_arg (const char *p, int len) | |
8100 | { | |
8101 | int i; | |
8102 | ||
8103 | for (i = 0; i < n_mdswitches; i++) | |
8104 | if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len)) | |
8105 | return 1; | |
8106 | ||
8107 | return 0; | |
8108 | } | |
8109 | ||
8110 | /* Work out the subdirectory to use based on the options. The format of | |
8111 | multilib_select is a list of elements. Each element is a subdirectory | |
8112 | name followed by a list of options followed by a semicolon. The format | |
8113 | of multilib_exclusions is the same, but without the preceding | |
8114 | directory. First gcc will check the exclusions, if none of the options | |
8115 | beginning with an exclamation point are present, and all of the other | |
8116 | options are present, then we will ignore this completely. Passing | |
8117 | that, gcc will consider each multilib_select in turn using the same | |
8118 | rules for matching the options. If a match is found, that subdirectory | |
8119 | will be used. | |
8120 | A subdirectory name is optionally followed by a colon and the corresponding | |
8121 | multiarch name. */ | |
8122 | ||
8123 | static void | |
8124 | set_multilib_dir (void) | |
8125 | { | |
8126 | const char *p; | |
8127 | unsigned int this_path_len; | |
8128 | const char *this_path, *this_arg; | |
8129 | const char *start, *end; | |
8130 | int not_arg; | |
8131 | int ok, ndfltok, first; | |
8132 | ||
8133 | n_mdswitches = 0; | |
8134 | start = multilib_defaults; | |
8135 | while (*start == ' ' || *start == '\t') | |
8136 | start++; | |
8137 | while (*start != '\0') | |
8138 | { | |
8139 | n_mdswitches++; | |
8140 | while (*start != ' ' && *start != '\t' && *start != '\0') | |
8141 | start++; | |
8142 | while (*start == ' ' || *start == '\t') | |
8143 | start++; | |
8144 | } | |
8145 | ||
8146 | if (n_mdswitches) | |
8147 | { | |
8148 | int i = 0; | |
8149 | ||
8150 | mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches); | |
8151 | for (start = multilib_defaults; *start != '\0'; start = end + 1) | |
8152 | { | |
8153 | while (*start == ' ' || *start == '\t') | |
8154 | start++; | |
8155 | ||
8156 | if (*start == '\0') | |
8157 | break; | |
8158 | ||
8159 | for (end = start + 1; | |
8160 | *end != ' ' && *end != '\t' && *end != '\0'; end++) | |
8161 | ; | |
8162 | ||
8163 | obstack_grow (&multilib_obstack, start, end - start); | |
8164 | obstack_1grow (&multilib_obstack, 0); | |
8165 | mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *); | |
8166 | mdswitches[i++].len = end - start; | |
8167 | ||
8168 | if (*end == '\0') | |
8169 | break; | |
8170 | } | |
8171 | } | |
8172 | ||
8173 | p = multilib_exclusions; | |
8174 | while (*p != '\0') | |
8175 | { | |
8176 | /* Ignore newlines. */ | |
8177 | if (*p == '\n') | |
8178 | { | |
8179 | ++p; | |
8180 | continue; | |
8181 | } | |
8182 | ||
8183 | /* Check the arguments. */ | |
8184 | ok = 1; | |
8185 | while (*p != ';') | |
8186 | { | |
8187 | if (*p == '\0') | |
8188 | { | |
8189 | invalid_exclusions: | |
8190 | fatal_error ("multilib exclusions %qs is invalid", | |
8191 | multilib_exclusions); | |
8192 | } | |
8193 | ||
8194 | if (! ok) | |
8195 | { | |
8196 | ++p; | |
8197 | continue; | |
8198 | } | |
8199 | ||
8200 | this_arg = p; | |
8201 | while (*p != ' ' && *p != ';') | |
8202 | { | |
8203 | if (*p == '\0') | |
8204 | goto invalid_exclusions; | |
8205 | ++p; | |
8206 | } | |
8207 | ||
8208 | if (*this_arg != '!') | |
8209 | not_arg = 0; | |
8210 | else | |
8211 | { | |
8212 | not_arg = 1; | |
8213 | ++this_arg; | |
8214 | } | |
8215 | ||
8216 | ok = used_arg (this_arg, p - this_arg); | |
8217 | if (not_arg) | |
8218 | ok = ! ok; | |
8219 | ||
8220 | if (*p == ' ') | |
8221 | ++p; | |
8222 | } | |
8223 | ||
8224 | if (ok) | |
8225 | return; | |
8226 | ||
8227 | ++p; | |
8228 | } | |
8229 | ||
8230 | first = 1; | |
8231 | p = multilib_select; | |
8232 | ||
8233 | /* Append multilib reuse rules if any. With those rules, we can reuse | |
8234 | one multilib for certain different options sets. */ | |
8235 | if (strlen (multilib_reuse) > 0) | |
8236 | p = concat (p, multilib_reuse, NULL); | |
8237 | ||
8238 | while (*p != '\0') | |
8239 | { | |
8240 | /* Ignore newlines. */ | |
8241 | if (*p == '\n') | |
8242 | { | |
8243 | ++p; | |
8244 | continue; | |
8245 | } | |
8246 | ||
8247 | /* Get the initial path. */ | |
8248 | this_path = p; | |
8249 | while (*p != ' ') | |
8250 | { | |
8251 | if (*p == '\0') | |
8252 | { | |
8253 | invalid_select: | |
8254 | fatal_error ("multilib select %qs %qs is invalid", | |
8255 | multilib_select, multilib_reuse); | |
8256 | } | |
8257 | ++p; | |
8258 | } | |
8259 | this_path_len = p - this_path; | |
8260 | ||
8261 | /* Check the arguments. */ | |
8262 | ok = 1; | |
8263 | ndfltok = 1; | |
8264 | ++p; | |
8265 | while (*p != ';') | |
8266 | { | |
8267 | if (*p == '\0') | |
8268 | goto invalid_select; | |
8269 | ||
8270 | if (! ok) | |
8271 | { | |
8272 | ++p; | |
8273 | continue; | |
8274 | } | |
8275 | ||
8276 | this_arg = p; | |
8277 | while (*p != ' ' && *p != ';') | |
8278 | { | |
8279 | if (*p == '\0') | |
8280 | goto invalid_select; | |
8281 | ++p; | |
8282 | } | |
8283 | ||
8284 | if (*this_arg != '!') | |
8285 | not_arg = 0; | |
8286 | else | |
8287 | { | |
8288 | not_arg = 1; | |
8289 | ++this_arg; | |
8290 | } | |
8291 | ||
8292 | /* If this is a default argument, we can just ignore it. | |
8293 | This is true even if this_arg begins with '!'. Beginning | |
8294 | with '!' does not mean that this argument is necessarily | |
8295 | inappropriate for this library: it merely means that | |
8296 | there is a more specific library which uses this | |
8297 | argument. If this argument is a default, we need not | |
8298 | consider that more specific library. */ | |
8299 | ok = used_arg (this_arg, p - this_arg); | |
8300 | if (not_arg) | |
8301 | ok = ! ok; | |
8302 | ||
8303 | if (! ok) | |
8304 | ndfltok = 0; | |
8305 | ||
8306 | if (default_arg (this_arg, p - this_arg)) | |
8307 | ok = 1; | |
8308 | ||
8309 | if (*p == ' ') | |
8310 | ++p; | |
8311 | } | |
8312 | ||
8313 | if (ok && first) | |
8314 | { | |
8315 | if (this_path_len != 1 | |
8316 | || this_path[0] != '.') | |
8317 | { | |
8318 | char *new_multilib_dir = XNEWVEC (char, this_path_len + 1); | |
8319 | char *q; | |
8320 | ||
8321 | strncpy (new_multilib_dir, this_path, this_path_len); | |
8322 | new_multilib_dir[this_path_len] = '\0'; | |
8323 | q = strchr (new_multilib_dir, ':'); | |
8324 | if (q != NULL) | |
8325 | *q = '\0'; | |
8326 | multilib_dir = new_multilib_dir; | |
8327 | } | |
8328 | first = 0; | |
8329 | } | |
8330 | ||
8331 | if (ndfltok) | |
8332 | { | |
8333 | const char *q = this_path, *end = this_path + this_path_len; | |
8334 | ||
8335 | while (q < end && *q != ':') | |
8336 | q++; | |
8337 | if (q < end) | |
8338 | { | |
8339 | const char *q2 = q + 1, *ml_end = end; | |
8340 | char *new_multilib_os_dir; | |
8341 | ||
8342 | while (q2 < end && *q2 != ':') | |
8343 | q2++; | |
8344 | if (*q2 == ':') | |
8345 | ml_end = q2; | |
8346 | if (ml_end - q == 1) | |
8347 | multilib_os_dir = xstrdup ("."); | |
8348 | else | |
8349 | { | |
8350 | new_multilib_os_dir = XNEWVEC (char, ml_end - q); | |
8351 | memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1); | |
8352 | new_multilib_os_dir[ml_end - q - 1] = '\0'; | |
8353 | multilib_os_dir = new_multilib_os_dir; | |
8354 | } | |
8355 | ||
8356 | if (q2 < end && *q2 == ':') | |
8357 | { | |
8358 | char *new_multiarch_dir = XNEWVEC (char, end - q2); | |
8359 | memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1); | |
8360 | new_multiarch_dir[end - q2 - 1] = '\0'; | |
8361 | multiarch_dir = new_multiarch_dir; | |
8362 | } | |
8363 | break; | |
8364 | } | |
8365 | } | |
8366 | ||
8367 | ++p; | |
8368 | } | |
8369 | ||
8370 | if (multilib_dir == NULL && multilib_os_dir != NULL | |
8371 | && strcmp (multilib_os_dir, ".") == 0) | |
8372 | { | |
8373 | free (CONST_CAST (char *, multilib_os_dir)); | |
8374 | multilib_os_dir = NULL; | |
8375 | } | |
8376 | else if (multilib_dir != NULL && multilib_os_dir == NULL) | |
8377 | multilib_os_dir = multilib_dir; | |
8378 | } | |
8379 | ||
8380 | /* Print out the multiple library subdirectory selection | |
8381 | information. This prints out a series of lines. Each line looks | |
8382 | like SUBDIRECTORY;@OPTION@OPTION, with as many options as is | |
8383 | required. Only the desired options are printed out, the negative | |
8384 | matches. The options are print without a leading dash. There are | |
8385 | no spaces to make it easy to use the information in the shell. | |
8386 | Each subdirectory is printed only once. This assumes the ordering | |
8387 | generated by the genmultilib script. Also, we leave out ones that match | |
8388 | the exclusions. */ | |
8389 | ||
8390 | static void | |
8391 | print_multilib_info (void) | |
8392 | { | |
8393 | const char *p = multilib_select; | |
8394 | const char *last_path = 0, *this_path; | |
8395 | int skip; | |
8396 | unsigned int last_path_len = 0; | |
8397 | ||
8398 | while (*p != '\0') | |
8399 | { | |
8400 | skip = 0; | |
8401 | /* Ignore newlines. */ | |
8402 | if (*p == '\n') | |
8403 | { | |
8404 | ++p; | |
8405 | continue; | |
8406 | } | |
8407 | ||
8408 | /* Get the initial path. */ | |
8409 | this_path = p; | |
8410 | while (*p != ' ') | |
8411 | { | |
8412 | if (*p == '\0') | |
8413 | { | |
8414 | invalid_select: | |
8415 | fatal_error ("multilib select %qs is invalid", multilib_select); | |
8416 | } | |
8417 | ||
8418 | ++p; | |
8419 | } | |
8420 | ||
8421 | /* When --disable-multilib was used but target defines | |
8422 | MULTILIB_OSDIRNAMES, entries starting with .: (and not starting | |
8423 | with .:: for multiarch configurations) are there just to find | |
8424 | multilib_os_dir, so skip them from output. */ | |
8425 | if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':') | |
8426 | skip = 1; | |
8427 | ||
8428 | /* Check for matches with the multilib_exclusions. We don't bother | |
8429 | with the '!' in either list. If any of the exclusion rules match | |
8430 | all of its options with the select rule, we skip it. */ | |
8431 | { | |
8432 | const char *e = multilib_exclusions; | |
8433 | const char *this_arg; | |
8434 | ||
8435 | while (*e != '\0') | |
8436 | { | |
8437 | int m = 1; | |
8438 | /* Ignore newlines. */ | |
8439 | if (*e == '\n') | |
8440 | { | |
8441 | ++e; | |
8442 | continue; | |
8443 | } | |
8444 | ||
8445 | /* Check the arguments. */ | |
8446 | while (*e != ';') | |
8447 | { | |
8448 | const char *q; | |
8449 | int mp = 0; | |
8450 | ||
8451 | if (*e == '\0') | |
8452 | { | |
8453 | invalid_exclusion: | |
8454 | fatal_error ("multilib exclusion %qs is invalid", | |
8455 | multilib_exclusions); | |
8456 | } | |
8457 | ||
8458 | if (! m) | |
8459 | { | |
8460 | ++e; | |
8461 | continue; | |
8462 | } | |
8463 | ||
8464 | this_arg = e; | |
8465 | ||
8466 | while (*e != ' ' && *e != ';') | |
8467 | { | |
8468 | if (*e == '\0') | |
8469 | goto invalid_exclusion; | |
8470 | ++e; | |
8471 | } | |
8472 | ||
8473 | q = p + 1; | |
8474 | while (*q != ';') | |
8475 | { | |
8476 | const char *arg; | |
8477 | int len = e - this_arg; | |
8478 | ||
8479 | if (*q == '\0') | |
8480 | goto invalid_select; | |
8481 | ||
8482 | arg = q; | |
8483 | ||
8484 | while (*q != ' ' && *q != ';') | |
8485 | { | |
8486 | if (*q == '\0') | |
8487 | goto invalid_select; | |
8488 | ++q; | |
8489 | } | |
8490 | ||
8491 | if (! strncmp (arg, this_arg, | |
8492 | (len < q - arg) ? q - arg : len) | |
8493 | || default_arg (this_arg, e - this_arg)) | |
8494 | { | |
8495 | mp = 1; | |
8496 | break; | |
8497 | } | |
8498 | ||
8499 | if (*q == ' ') | |
8500 | ++q; | |
8501 | } | |
8502 | ||
8503 | if (! mp) | |
8504 | m = 0; | |
8505 | ||
8506 | if (*e == ' ') | |
8507 | ++e; | |
8508 | } | |
8509 | ||
8510 | if (m) | |
8511 | { | |
8512 | skip = 1; | |
8513 | break; | |
8514 | } | |
8515 | ||
8516 | if (*e != '\0') | |
8517 | ++e; | |
8518 | } | |
8519 | } | |
8520 | ||
8521 | if (! skip) | |
8522 | { | |
8523 | /* If this is a duplicate, skip it. */ | |
8524 | skip = (last_path != 0 | |
8525 | && (unsigned int) (p - this_path) == last_path_len | |
8526 | && ! filename_ncmp (last_path, this_path, last_path_len)); | |
8527 | ||
8528 | last_path = this_path; | |
8529 | last_path_len = p - this_path; | |
8530 | } | |
8531 | ||
8532 | /* If this directory requires any default arguments, we can skip | |
8533 | it. We will already have printed a directory identical to | |
8534 | this one which does not require that default argument. */ | |
8535 | if (! skip) | |
8536 | { | |
8537 | const char *q; | |
8538 | ||
8539 | q = p + 1; | |
8540 | while (*q != ';') | |
8541 | { | |
8542 | const char *arg; | |
8543 | ||
8544 | if (*q == '\0') | |
8545 | goto invalid_select; | |
8546 | ||
8547 | if (*q == '!') | |
8548 | arg = NULL; | |
8549 | else | |
8550 | arg = q; | |
8551 | ||
8552 | while (*q != ' ' && *q != ';') | |
8553 | { | |
8554 | if (*q == '\0') | |
8555 | goto invalid_select; | |
8556 | ++q; | |
8557 | } | |
8558 | ||
8559 | if (arg != NULL | |
8560 | && default_arg (arg, q - arg)) | |
8561 | { | |
8562 | skip = 1; | |
8563 | break; | |
8564 | } | |
8565 | ||
8566 | if (*q == ' ') | |
8567 | ++q; | |
8568 | } | |
8569 | } | |
8570 | ||
8571 | if (! skip) | |
8572 | { | |
8573 | const char *p1; | |
8574 | ||
8575 | for (p1 = last_path; p1 < p && *p1 != ':'; p1++) | |
8576 | putchar (*p1); | |
8577 | putchar (';'); | |
8578 | } | |
8579 | ||
8580 | ++p; | |
8581 | while (*p != ';') | |
8582 | { | |
8583 | int use_arg; | |
8584 | ||
8585 | if (*p == '\0') | |
8586 | goto invalid_select; | |
8587 | ||
8588 | if (skip) | |
8589 | { | |
8590 | ++p; | |
8591 | continue; | |
8592 | } | |
8593 | ||
8594 | use_arg = *p != '!'; | |
8595 | ||
8596 | if (use_arg) | |
8597 | putchar ('@'); | |
8598 | ||
8599 | while (*p != ' ' && *p != ';') | |
8600 | { | |
8601 | if (*p == '\0') | |
8602 | goto invalid_select; | |
8603 | if (use_arg) | |
8604 | putchar (*p); | |
8605 | ++p; | |
8606 | } | |
8607 | ||
8608 | if (*p == ' ') | |
8609 | ++p; | |
8610 | } | |
8611 | ||
8612 | if (! skip) | |
8613 | { | |
8614 | /* If there are extra options, print them now. */ | |
8615 | if (multilib_extra && *multilib_extra) | |
8616 | { | |
8617 | int print_at = TRUE; | |
8618 | const char *q; | |
8619 | ||
8620 | for (q = multilib_extra; *q != '\0'; q++) | |
8621 | { | |
8622 | if (*q == ' ') | |
8623 | print_at = TRUE; | |
8624 | else | |
8625 | { | |
8626 | if (print_at) | |
8627 | putchar ('@'); | |
8628 | putchar (*q); | |
8629 | print_at = FALSE; | |
8630 | } | |
8631 | } | |
8632 | } | |
8633 | ||
8634 | putchar ('\n'); | |
8635 | } | |
8636 | ||
8637 | ++p; | |
8638 | } | |
8639 | } | |
8640 | \f | |
8641 | /* getenv built-in spec function. | |
8642 | ||
8643 | Returns the value of the environment variable given by its first | |
8644 | argument, concatenated with the second argument. If the | |
8645 | environment variable is not defined, a fatal error is issued. */ | |
8646 | ||
8647 | static const char * | |
8648 | getenv_spec_function (int argc, const char **argv) | |
8649 | { | |
8650 | char *value; | |
8651 | char *result; | |
8652 | char *ptr; | |
8653 | size_t len; | |
8654 | ||
8655 | if (argc != 2) | |
8656 | return NULL; | |
8657 | ||
8658 | value = getenv (argv[0]); | |
8659 | if (!value) | |
8660 | fatal_error ("environment variable %qs not defined", argv[0]); | |
8661 | ||
8662 | /* We have to escape every character of the environment variable so | |
8663 | they are not interpreted as active spec characters. A | |
8664 | particularly painful case is when we are reading a variable | |
8665 | holding a windows path complete with \ separators. */ | |
8666 | len = strlen (value) * 2 + strlen (argv[1]) + 1; | |
8667 | result = XNEWVAR (char, len); | |
8668 | for (ptr = result; *value; ptr += 2) | |
8669 | { | |
8670 | ptr[0] = '\\'; | |
8671 | ptr[1] = *value++; | |
8672 | } | |
8673 | ||
8674 | strcpy (ptr, argv[1]); | |
8675 | ||
8676 | return result; | |
8677 | } | |
8678 | ||
8679 | /* if-exists built-in spec function. | |
8680 | ||
8681 | Checks to see if the file specified by the absolute pathname in | |
8682 | ARGS exists. Returns that pathname if found. | |
8683 | ||
8684 | The usual use for this function is to check for a library file | |
8685 | (whose name has been expanded with %s). */ | |
8686 | ||
8687 | static const char * | |
8688 | if_exists_spec_function (int argc, const char **argv) | |
8689 | { | |
8690 | /* Must have only one argument. */ | |
8691 | if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) | |
8692 | return argv[0]; | |
8693 | ||
8694 | return NULL; | |
8695 | } | |
8696 | ||
8697 | /* if-exists-else built-in spec function. | |
8698 | ||
8699 | This is like if-exists, but takes an additional argument which | |
8700 | is returned if the first argument does not exist. */ | |
8701 | ||
8702 | static const char * | |
8703 | if_exists_else_spec_function (int argc, const char **argv) | |
8704 | { | |
8705 | /* Must have exactly two arguments. */ | |
8706 | if (argc != 2) | |
8707 | return NULL; | |
8708 | ||
8709 | if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) | |
8710 | return argv[0]; | |
8711 | ||
8712 | return argv[1]; | |
8713 | } | |
8714 | ||
8715 | /* sanitize built-in spec function. | |
8716 | ||
8717 | This returns non-NULL, if sanitizing address, thread or | |
8718 | any of the undefined behavior sanitizers. */ | |
8719 | ||
8720 | static const char * | |
8721 | sanitize_spec_function (int argc, const char **argv) | |
8722 | { | |
8723 | if (argc != 1) | |
8724 | return NULL; | |
8725 | ||
8726 | if (strcmp (argv[0], "address") == 0) | |
8727 | return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "" : NULL; | |
8728 | if (strcmp (argv[0], "kernel-address") == 0) | |
8729 | return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "" : NULL; | |
8730 | if (strcmp (argv[0], "thread") == 0) | |
8731 | return (flag_sanitize & SANITIZE_THREAD) ? "" : NULL; | |
8732 | if (strcmp (argv[0], "undefined") == 0) | |
8733 | return ((flag_sanitize & (SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT)) | |
8734 | && !flag_sanitize_undefined_trap_on_error) ? "" : NULL; | |
8735 | if (strcmp (argv[0], "leak") == 0) | |
8736 | return ((flag_sanitize | |
8737 | & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD)) | |
8738 | == SANITIZE_LEAK) ? "" : NULL; | |
8739 | return NULL; | |
8740 | } | |
8741 | ||
8742 | /* replace-outfile built-in spec function. | |
8743 | ||
8744 | This looks for the first argument in the outfiles array's name and | |
8745 | replaces it with the second argument. */ | |
8746 | ||
8747 | static const char * | |
8748 | replace_outfile_spec_function (int argc, const char **argv) | |
8749 | { | |
8750 | int i; | |
8751 | /* Must have exactly two arguments. */ | |
8752 | if (argc != 2) | |
8753 | abort (); | |
8754 | ||
8755 | for (i = 0; i < n_infiles; i++) | |
8756 | { | |
8757 | if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) | |
8758 | outfiles[i] = xstrdup (argv[1]); | |
8759 | } | |
8760 | return NULL; | |
8761 | } | |
8762 | ||
8763 | /* remove-outfile built-in spec function. | |
8764 | * | |
8765 | * This looks for the first argument in the outfiles array's name and | |
8766 | * removes it. */ | |
8767 | ||
8768 | static const char * | |
8769 | remove_outfile_spec_function (int argc, const char **argv) | |
8770 | { | |
8771 | int i; | |
8772 | /* Must have exactly one argument. */ | |
8773 | if (argc != 1) | |
8774 | abort (); | |
8775 | ||
8776 | for (i = 0; i < n_infiles; i++) | |
8777 | { | |
8778 | if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) | |
8779 | outfiles[i] = NULL; | |
8780 | } | |
8781 | return NULL; | |
8782 | } | |
8783 | ||
8784 | /* Given two version numbers, compares the two numbers. | |
8785 | A version number must match the regular expression | |
8786 | ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))* | |
8787 | */ | |
8788 | static int | |
8789 | compare_version_strings (const char *v1, const char *v2) | |
8790 | { | |
8791 | int rresult; | |
8792 | regex_t r; | |
8793 | ||
8794 | if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$", | |
8795 | REG_EXTENDED | REG_NOSUB) != 0) | |
8796 | abort (); | |
8797 | rresult = regexec (&r, v1, 0, NULL, 0); | |
8798 | if (rresult == REG_NOMATCH) | |
8799 | fatal_error ("invalid version number %qs", v1); | |
8800 | else if (rresult != 0) | |
8801 | abort (); | |
8802 | rresult = regexec (&r, v2, 0, NULL, 0); | |
8803 | if (rresult == REG_NOMATCH) | |
8804 | fatal_error ("invalid version number %qs", v2); | |
8805 | else if (rresult != 0) | |
8806 | abort (); | |
8807 | ||
8808 | return strverscmp (v1, v2); | |
8809 | } | |
8810 | ||
8811 | ||
8812 | /* version_compare built-in spec function. | |
8813 | ||
8814 | This takes an argument of the following form: | |
8815 | ||
8816 | <comparison-op> <arg1> [<arg2>] <switch> <result> | |
8817 | ||
8818 | and produces "result" if the comparison evaluates to true, | |
8819 | and nothing if it doesn't. | |
8820 | ||
8821 | The supported <comparison-op> values are: | |
8822 | ||
8823 | >= true if switch is a later (or same) version than arg1 | |
8824 | !> opposite of >= | |
8825 | < true if switch is an earlier version than arg1 | |
8826 | !< opposite of < | |
8827 | >< true if switch is arg1 or later, and earlier than arg2 | |
8828 | <> true if switch is earlier than arg1 or is arg2 or later | |
8829 | ||
8830 | If the switch is not present, the condition is false unless | |
8831 | the first character of the <comparison-op> is '!'. | |
8832 | ||
8833 | For example, | |
8834 | %:version-compare(>= 10.3 mmacosx-version-min= -lmx) | |
8835 | adds -lmx if -mmacosx-version-min=10.3.9 was passed. */ | |
8836 | ||
8837 | static const char * | |
8838 | version_compare_spec_function (int argc, const char **argv) | |
8839 | { | |
8840 | int comp1, comp2; | |
8841 | size_t switch_len; | |
8842 | const char *switch_value = NULL; | |
8843 | int nargs = 1, i; | |
8844 | bool result; | |
8845 | ||
8846 | if (argc < 3) | |
8847 | fatal_error ("too few arguments to %%:version-compare"); | |
8848 | if (argv[0][0] == '\0') | |
8849 | abort (); | |
8850 | if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!') | |
8851 | nargs = 2; | |
8852 | if (argc != nargs + 3) | |
8853 | fatal_error ("too many arguments to %%:version-compare"); | |
8854 | ||
8855 | switch_len = strlen (argv[nargs + 1]); | |
8856 | for (i = 0; i < n_switches; i++) | |
8857 | if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len) | |
8858 | && check_live_switch (i, switch_len)) | |
8859 | switch_value = switches[i].part1 + switch_len; | |
8860 | ||
8861 | if (switch_value == NULL) | |
8862 | comp1 = comp2 = -1; | |
8863 | else | |
8864 | { | |
8865 | comp1 = compare_version_strings (switch_value, argv[1]); | |
8866 | if (nargs == 2) | |
8867 | comp2 = compare_version_strings (switch_value, argv[2]); | |
8868 | else | |
8869 | comp2 = -1; /* This value unused. */ | |
8870 | } | |
8871 | ||
8872 | switch (argv[0][0] << 8 | argv[0][1]) | |
8873 | { | |
8874 | case '>' << 8 | '=': | |
8875 | result = comp1 >= 0; | |
8876 | break; | |
8877 | case '!' << 8 | '<': | |
8878 | result = comp1 >= 0 || switch_value == NULL; | |
8879 | break; | |
8880 | case '<' << 8: | |
8881 | result = comp1 < 0; | |
8882 | break; | |
8883 | case '!' << 8 | '>': | |
8884 | result = comp1 < 0 || switch_value == NULL; | |
8885 | break; | |
8886 | case '>' << 8 | '<': | |
8887 | result = comp1 >= 0 && comp2 < 0; | |
8888 | break; | |
8889 | case '<' << 8 | '>': | |
8890 | result = comp1 < 0 || comp2 >= 0; | |
8891 | break; | |
8892 | ||
8893 | default: | |
8894 | fatal_error ("unknown operator %qs in %%:version-compare", argv[0]); | |
8895 | } | |
8896 | if (! result) | |
8897 | return NULL; | |
8898 | ||
8899 | return argv[nargs + 2]; | |
8900 | } | |
8901 | ||
8902 | /* %:include builtin spec function. This differs from %include in that it | |
8903 | can be nested inside a spec, and thus be conditionalized. It takes | |
8904 | one argument, the filename, and looks for it in the startfile path. | |
8905 | The result is always NULL, i.e. an empty expansion. */ | |
8906 | ||
8907 | static const char * | |
8908 | include_spec_function (int argc, const char **argv) | |
8909 | { | |
8910 | char *file; | |
8911 | ||
8912 | if (argc != 1) | |
8913 | abort (); | |
8914 | ||
8915 | file = find_a_file (&startfile_prefixes, argv[0], R_OK, true); | |
8916 | read_specs (file ? file : argv[0], false, false); | |
8917 | ||
8918 | return NULL; | |
8919 | } | |
8920 | ||
8921 | /* %:find-file spec function. This function replaces its argument by | |
8922 | the file found through find_file, that is the -print-file-name gcc | |
8923 | program option. */ | |
8924 | static const char * | |
8925 | find_file_spec_function (int argc, const char **argv) | |
8926 | { | |
8927 | const char *file; | |
8928 | ||
8929 | if (argc != 1) | |
8930 | abort (); | |
8931 | ||
8932 | file = find_file (argv[0]); | |
8933 | return file; | |
8934 | } | |
8935 | ||
8936 | ||
8937 | /* %:find-plugindir spec function. This function replaces its argument | |
8938 | by the -iplugindir=<dir> option. `dir' is found through find_file, that | |
8939 | is the -print-file-name gcc program option. */ | |
8940 | static const char * | |
8941 | find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED) | |
8942 | { | |
8943 | const char *option; | |
8944 | ||
8945 | if (argc != 0) | |
8946 | abort (); | |
8947 | ||
8948 | option = concat ("-iplugindir=", find_file ("plugin"), NULL); | |
8949 | return option; | |
8950 | } | |
8951 | ||
8952 | ||
8953 | /* %:print-asm-header spec function. Print a banner to say that the | |
8954 | following output is from the assembler. */ | |
8955 | ||
8956 | static const char * | |
8957 | print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED, | |
8958 | const char **argv ATTRIBUTE_UNUSED) | |
8959 | { | |
8960 | printf (_("Assembler options\n=================\n\n")); | |
8961 | printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n")); | |
8962 | fflush (stdout); | |
8963 | return NULL; | |
8964 | } | |
8965 | ||
8966 | /* Get a random number for -frandom-seed */ | |
8967 | ||
8968 | static unsigned HOST_WIDE_INT | |
8969 | get_random_number (void) | |
8970 | { | |
8971 | unsigned HOST_WIDE_INT ret = 0; | |
8972 | int fd; | |
8973 | ||
8974 | fd = open ("/dev/urandom", O_RDONLY); | |
8975 | if (fd >= 0) | |
8976 | { | |
8977 | read (fd, &ret, sizeof (HOST_WIDE_INT)); | |
8978 | close (fd); | |
8979 | if (ret) | |
8980 | return ret; | |
8981 | } | |
8982 | ||
8983 | /* Get some more or less random data. */ | |
8984 | #ifdef HAVE_GETTIMEOFDAY | |
8985 | { | |
8986 | struct timeval tv; | |
8987 | ||
8988 | gettimeofday (&tv, NULL); | |
8989 | ret = tv.tv_sec * 1000 + tv.tv_usec / 1000; | |
8990 | } | |
8991 | #else | |
8992 | { | |
8993 | time_t now = time (NULL); | |
8994 | ||
8995 | if (now != (time_t)-1) | |
8996 | ret = (unsigned) now; | |
8997 | } | |
8998 | #endif | |
8999 | ||
9000 | return ret ^ getpid (); | |
9001 | } | |
9002 | ||
9003 | /* %:compare-debug-dump-opt spec function. Save the last argument, | |
9004 | expected to be the last -fdump-final-insns option, or generate a | |
9005 | temporary. */ | |
9006 | ||
9007 | static const char * | |
9008 | compare_debug_dump_opt_spec_function (int arg, | |
9009 | const char **argv ATTRIBUTE_UNUSED) | |
9010 | { | |
9011 | char *ret; | |
9012 | char *name; | |
9013 | int which; | |
9014 | static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; | |
9015 | ||
9016 | if (arg != 0) | |
9017 | fatal_error ("too many arguments to %%:compare-debug-dump-opt"); | |
9018 | ||
9019 | do_spec_2 ("%{fdump-final-insns=*:%*}"); | |
9020 | do_spec_1 (" ", 0, NULL); | |
9021 | ||
9022 | if (argbuf.length () > 0 | |
9023 | && strcmp (argv[argbuf.length () - 1], ".")) | |
9024 | { | |
9025 | if (!compare_debug) | |
9026 | return NULL; | |
9027 | ||
9028 | name = xstrdup (argv[argbuf.length () - 1]); | |
9029 | ret = NULL; | |
9030 | } | |
9031 | else | |
9032 | { | |
9033 | const char *ext = NULL; | |
9034 | ||
9035 | if (argbuf.length () > 0) | |
9036 | { | |
9037 | do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}"); | |
9038 | ext = ".gkd"; | |
9039 | } | |
9040 | else if (!compare_debug) | |
9041 | return NULL; | |
9042 | else | |
9043 | do_spec_2 ("%g.gkd"); | |
9044 | ||
9045 | do_spec_1 (" ", 0, NULL); | |
9046 | ||
9047 | gcc_assert (argbuf.length () > 0); | |
9048 | ||
9049 | name = concat (argbuf.last (), ext, NULL); | |
9050 | ||
9051 | ret = concat ("-fdump-final-insns=", name, NULL); | |
9052 | } | |
9053 | ||
9054 | which = compare_debug < 0; | |
9055 | debug_check_temp_file[which] = name; | |
9056 | ||
9057 | if (!which) | |
9058 | { | |
9059 | unsigned HOST_WIDE_INT value = get_random_number (); | |
9060 | ||
9061 | sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); | |
9062 | } | |
9063 | ||
9064 | if (*random_seed) | |
9065 | { | |
9066 | char *tmp = ret; | |
9067 | ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ", | |
9068 | ret, NULL); | |
9069 | free (tmp); | |
9070 | } | |
9071 | ||
9072 | if (which) | |
9073 | *random_seed = 0; | |
9074 | ||
9075 | return ret; | |
9076 | } | |
9077 | ||
9078 | static const char *debug_auxbase_opt; | |
9079 | ||
9080 | /* %:compare-debug-self-opt spec function. Expands to the options | |
9081 | that are to be passed in the second compilation of | |
9082 | compare-debug. */ | |
9083 | ||
9084 | static const char * | |
9085 | compare_debug_self_opt_spec_function (int arg, | |
9086 | const char **argv ATTRIBUTE_UNUSED) | |
9087 | { | |
9088 | if (arg != 0) | |
9089 | fatal_error ("too many arguments to %%:compare-debug-self-opt"); | |
9090 | ||
9091 | if (compare_debug >= 0) | |
9092 | return NULL; | |
9093 | ||
9094 | do_spec_2 ("%{c|S:%{o*:%*}}"); | |
9095 | do_spec_1 (" ", 0, NULL); | |
9096 | ||
9097 | if (argbuf.length () > 0) | |
9098 | debug_auxbase_opt = concat ("-auxbase-strip ", | |
9099 | argbuf.last (), | |
9100 | NULL); | |
9101 | else | |
9102 | debug_auxbase_opt = NULL; | |
9103 | ||
9104 | return concat ("\ | |
9105 | %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \ | |
9106 | %<fdump-final-insns=* -w -S -o %j \ | |
9107 | %{!fcompare-debug-second:-fcompare-debug-second} \ | |
9108 | ", compare_debug_opt, NULL); | |
9109 | } | |
9110 | ||
9111 | /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase | |
9112 | options that are to be passed in the second compilation of | |
9113 | compare-debug. It expects, as an argument, the basename of the | |
9114 | current input file name, with the .gk suffix appended to it. */ | |
9115 | ||
9116 | static const char * | |
9117 | compare_debug_auxbase_opt_spec_function (int arg, | |
9118 | const char **argv) | |
9119 | { | |
9120 | char *name; | |
9121 | int len; | |
9122 | ||
9123 | if (arg == 0) | |
9124 | fatal_error ("too few arguments to %%:compare-debug-auxbase-opt"); | |
9125 | ||
9126 | if (arg != 1) | |
9127 | fatal_error ("too many arguments to %%:compare-debug-auxbase-opt"); | |
9128 | ||
9129 | if (compare_debug >= 0) | |
9130 | return NULL; | |
9131 | ||
9132 | len = strlen (argv[0]); | |
9133 | if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0) | |
9134 | fatal_error ("argument to %%:compare-debug-auxbase-opt " | |
9135 | "does not end in .gk"); | |
9136 | ||
9137 | if (debug_auxbase_opt) | |
9138 | return debug_auxbase_opt; | |
9139 | ||
9140 | #define OPT "-auxbase " | |
9141 | ||
9142 | len -= 3; | |
9143 | name = (char*) xmalloc (sizeof (OPT) + len); | |
9144 | memcpy (name, OPT, sizeof (OPT) - 1); | |
9145 | memcpy (name + sizeof (OPT) - 1, argv[0], len); | |
9146 | name[sizeof (OPT) - 1 + len] = '\0'; | |
9147 | ||
9148 | #undef OPT | |
9149 | ||
9150 | return name; | |
9151 | } | |
9152 | ||
9153 | /* %:pass-through-libs spec function. Finds all -l options and input | |
9154 | file names in the lib spec passed to it, and makes a list of them | |
9155 | prepended with the plugin option to cause them to be passed through | |
9156 | to the final link after all the new object files have been added. */ | |
9157 | ||
9158 | const char * | |
9159 | pass_through_libs_spec_func (int argc, const char **argv) | |
9160 | { | |
9161 | char *prepended = xstrdup (" "); | |
9162 | int n; | |
9163 | /* Shlemiel the painter's algorithm. Innately horrible, but at least | |
9164 | we know that there will never be more than a handful of strings to | |
9165 | concat, and it's only once per run, so it's not worth optimising. */ | |
9166 | for (n = 0; n < argc; n++) | |
9167 | { | |
9168 | char *old = prepended; | |
9169 | /* Anything that isn't an option is a full path to an output | |
9170 | file; pass it through if it ends in '.a'. Among options, | |
9171 | pass only -l. */ | |
9172 | if (argv[n][0] == '-' && argv[n][1] == 'l') | |
9173 | { | |
9174 | const char *lopt = argv[n] + 2; | |
9175 | /* Handle both joined and non-joined -l options. If for any | |
9176 | reason there's a trailing -l with no joined or following | |
9177 | arg just discard it. */ | |
9178 | if (!*lopt && ++n >= argc) | |
9179 | break; | |
9180 | else if (!*lopt) | |
9181 | lopt = argv[n]; | |
9182 | prepended = concat (prepended, "-plugin-opt=-pass-through=-l", | |
9183 | lopt, " ", NULL); | |
9184 | } | |
9185 | else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2)) | |
9186 | { | |
9187 | prepended = concat (prepended, "-plugin-opt=-pass-through=", | |
9188 | argv[n], " ", NULL); | |
9189 | } | |
9190 | if (prepended != old) | |
9191 | free (old); | |
9192 | } | |
9193 | return prepended; | |
9194 | } | |
9195 | ||
9196 | /* %:replace-extension spec function. Replaces the extension of the | |
9197 | first argument with the second argument. */ | |
9198 | ||
9199 | const char * | |
9200 | replace_extension_spec_func (int argc, const char **argv) | |
9201 | { | |
9202 | char *name; | |
9203 | char *p; | |
9204 | char *result; | |
9205 | int i; | |
9206 | ||
9207 | if (argc != 2) | |
9208 | fatal_error ("too few arguments to %%:replace-extension"); | |
9209 | ||
9210 | name = xstrdup (argv[0]); | |
9211 | ||
9212 | for (i = strlen (name) - 1; i >= 0; i--) | |
9213 | if (IS_DIR_SEPARATOR (name[i])) | |
9214 | break; | |
9215 | ||
9216 | p = strrchr (name + i + 1, '.'); | |
9217 | if (p != NULL) | |
9218 | *p = '\0'; | |
9219 | ||
9220 | result = concat (name, argv[1], NULL); | |
9221 | ||
9222 | free (name); | |
9223 | return result; | |
9224 | } | |
9225 | ||
9226 | /* Insert backslash before spaces in ORIG (usually a file path), to | |
9227 | avoid being broken by spec parser. | |
9228 | ||
9229 | This function is needed as do_spec_1 treats white space (' ' and '\t') | |
9230 | as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so, | |
9231 | the file name should be treated as a single argument rather than being | |
9232 | broken into multiple. Solution is to insert '\\' before the space in a | |
9233 | file name. | |
9234 | ||
9235 | This function converts and only converts all occurrence of ' ' | |
9236 | to '\\' + ' ' and '\t' to '\\' + '\t'. For example: | |
9237 | "a b" -> "a\\ b" | |
9238 | "a b" -> "a\\ \\ b" | |
9239 | "a\tb" -> "a\\\tb" | |
9240 | "a\\ b" -> "a\\\\ b" | |
9241 | ||
9242 | orig: input null-terminating string that was allocated by xalloc. The | |
9243 | memory it points to might be freed in this function. Behavior undefined | |
9244 | if ORIG wasn't xalloced or was freed already at entry. | |
9245 | ||
9246 | Return: ORIG if no conversion needed. Otherwise a newly allocated string | |
9247 | that was converted from ORIG. */ | |
9248 | ||
9249 | static char * | |
9250 | convert_white_space (char *orig) | |
9251 | { | |
9252 | int len, number_of_space = 0; | |
9253 | ||
9254 | for (len = 0; orig[len]; len++) | |
9255 | if (orig[len] == ' ' || orig[len] == '\t') number_of_space++; | |
9256 | ||
9257 | if (number_of_space) | |
9258 | { | |
9259 | char *new_spec = (char *) xmalloc (len + number_of_space + 1); | |
9260 | int j, k; | |
9261 | for (j = 0, k = 0; j <= len; j++, k++) | |
9262 | { | |
9263 | if (orig[j] == ' ' || orig[j] == '\t') | |
9264 | new_spec[k++] = '\\'; | |
9265 | new_spec[k] = orig[j]; | |
9266 | } | |
9267 | free (orig); | |
9268 | return new_spec; | |
9269 | } | |
9270 | else | |
9271 | return orig; | |
9272 | } |