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b4c522fa | 1 | /* d-spec.c -- Specific flags and argument handling of the D front end. |
8d9254fc | 2 | Copyright (C) 2006-2020 Free Software Foundation, Inc. |
b4c522fa IB |
3 | |
4 | GCC is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 3, or (at your option) | |
7 | any later version. | |
8 | ||
9 | GCC is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with GCC; see the file COPYING3. If not see | |
16 | <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include "config.h" | |
19 | #include "system.h" | |
20 | #include "coretypes.h" | |
21 | #include "opt-suggestions.h" | |
22 | #include "gcc.h" | |
23 | #include "tm.h" | |
24 | #include "opts.h" | |
25 | ||
26 | /* This bit is set if the arguments is a D source file. */ | |
27 | #define DSOURCE (1<<1) | |
28 | /* This bit is set if they did `-lstdc++'. */ | |
29 | #define WITHLIBCXX (1<<2) | |
30 | /* Skip this option. */ | |
31 | #define SKIPOPT (1<<3) | |
32 | ||
33 | #ifndef LIBSTDCXX | |
34 | #define LIBSTDCXX "stdc++" | |
35 | #endif | |
36 | #ifndef LIBSTDCXX_PROFILE | |
37 | #define LIBSTDCXX_PROFILE LIBSTDCXX | |
38 | #endif | |
39 | ||
40 | #ifndef LIBPHOBOS | |
41 | #define LIBPHOBOS "gphobos" | |
42 | #endif | |
43 | #ifndef LIBPHOBOS_PROFILE | |
44 | #define LIBPHOBOS_PROFILE LIBPHOBOS | |
45 | #endif | |
46 | ||
47 | #ifndef LIBDRUNTIME | |
48 | #define LIBDRUNTIME "gdruntime" | |
49 | #endif | |
50 | #ifndef LIBDRUNTIME_PROFILE | |
51 | #define LIBDRUNTIME_PROFILE LIBDRUNTIME | |
52 | #endif | |
53 | ||
54 | /* What do with libgphobos. */ | |
55 | enum phobos_action | |
56 | { | |
57 | /* libgphobos should not be linked in. */ | |
58 | PHOBOS_NOLINK = -1, | |
59 | /* libgphobos should be linked in if it is needed. */ | |
60 | PHOBOS_DEFAULT = 0, | |
61 | /* libgphobos is needed and should be linked in. */ | |
62 | PHOBOS_LINK, | |
63 | /* libgphobos is needed and should be linked statically. */ | |
64 | PHOBOS_STATIC, | |
65 | /* libgphobos is needed and should be linked dynamically. */ | |
66 | PHOBOS_DYNAMIC, | |
67 | }; | |
68 | ||
69 | static phobos_action phobos_library = PHOBOS_DEFAULT; | |
70 | ||
71 | /* If true, use the standard D runtime library when linking with | |
72 | standard libraries. */ | |
73 | static bool need_phobos = true; | |
74 | ||
0b6e3127 RO |
75 | /* If true, do load libgphobos.spec even if not needed otherwise. */ |
76 | static bool need_spec = false; | |
77 | ||
b4c522fa IB |
78 | void |
79 | lang_specific_driver (cl_decoded_option **in_decoded_options, | |
80 | unsigned int *in_decoded_options_count, | |
81 | int *in_added_libraries) | |
82 | { | |
83 | unsigned int i, j; | |
84 | ||
85 | /* If nonzero, the user gave us the `-p' or `-pg' flag. */ | |
86 | int saw_profile_flag = 0; | |
87 | ||
88 | /* If true, the user gave `-g'. Used by -debuglib. */ | |
89 | bool saw_debug_flag = false; | |
90 | ||
91 | /* The new argument list will be contained in this. */ | |
92 | cl_decoded_option *new_decoded_options; | |
93 | ||
94 | /* "-lstdc++" if it appears on the command line. */ | |
95 | const cl_decoded_option *saw_libcxx = 0; | |
96 | ||
97 | /* Whether we need the C++ STD library. */ | |
98 | bool need_stdcxx = false; | |
99 | ||
100 | /* True if we saw -static. */ | |
101 | bool static_link = false; | |
102 | ||
103 | /* True if we should add -shared-libgcc to the command-line. */ | |
104 | bool shared_libgcc = true; | |
105 | ||
106 | /* What default library to use instead of phobos. */ | |
107 | const char *defaultlib = NULL; | |
108 | ||
109 | /* What debug library to use instead of phobos. */ | |
110 | const char *debuglib = NULL; | |
111 | ||
112 | /* The total number of arguments with the new stuff. */ | |
113 | unsigned int num_args = 1; | |
114 | ||
115 | /* "-fonly" if it appears on the command line. */ | |
116 | const char *only_source_option = 0; | |
117 | ||
118 | /* Whether the -o option was used. */ | |
119 | bool saw_opt_o = false; | |
120 | ||
121 | /* Whether the -c option was used. Also used for -E, -fsyntax-only, | |
122 | in general anything which implies only compilation and not linking. */ | |
123 | bool saw_opt_c = false; | |
124 | ||
125 | /* Whether the -S option was used. */ | |
126 | bool saw_opt_S = false; | |
127 | ||
128 | /* The first input file with an extension of .d. */ | |
129 | const char *first_d_file = NULL; | |
130 | ||
131 | /* The total number of arguments with the new stuff. */ | |
132 | unsigned int argc = *in_decoded_options_count; | |
133 | ||
134 | /* The argument list. */ | |
135 | cl_decoded_option *decoded_options = *in_decoded_options; | |
136 | ||
137 | /* The number of libraries added in. */ | |
138 | int added_libraries = *in_added_libraries; | |
139 | ||
140 | /* An array used to flag each argument that needs a bit set for | |
141 | DSOURCE, MATHLIB, WITHTHREAD, WITHLIBC or WITHLIBCXX. */ | |
142 | int *args = XCNEWVEC (int, argc); | |
143 | ||
144 | for (i = 1; i < argc; i++) | |
145 | { | |
146 | const char *arg = decoded_options[i].arg; | |
c0aebc60 | 147 | const int value = decoded_options[i].value; |
b4c522fa IB |
148 | |
149 | switch (decoded_options[i].opt_index) | |
150 | { | |
0b6e3127 RO |
151 | case OPT_dstartfiles: |
152 | need_spec = true; | |
153 | break; | |
154 | ||
b4c522fa IB |
155 | case OPT_nostdlib: |
156 | case OPT_nodefaultlibs: | |
157 | phobos_library = PHOBOS_NOLINK; | |
158 | break; | |
159 | ||
160 | case OPT_nophoboslib: | |
161 | need_phobos = false; | |
162 | args[i] |= SKIPOPT; | |
163 | break; | |
164 | ||
c0aebc60 IB |
165 | case OPT_fdruntime: |
166 | if (!value) | |
167 | need_phobos = false; | |
168 | break; | |
169 | ||
b4c522fa IB |
170 | case OPT_defaultlib_: |
171 | if (defaultlib != NULL) | |
172 | free (CONST_CAST (char *, defaultlib)); | |
173 | if (arg != NULL) | |
174 | { | |
175 | need_phobos = false; | |
176 | args[i] |= SKIPOPT; | |
177 | defaultlib = XNEWVEC (char, strlen (arg)); | |
178 | strcpy (CONST_CAST (char *, defaultlib), arg); | |
179 | } | |
180 | break; | |
181 | ||
182 | case OPT_debuglib_: | |
183 | if (debuglib != NULL) | |
184 | free (CONST_CAST (char *, debuglib)); | |
185 | if (arg != NULL) | |
186 | { | |
187 | need_phobos = false; | |
188 | args[i] |= SKIPOPT; | |
189 | debuglib = XNEWVEC (char, strlen (arg)); | |
190 | strcpy (CONST_CAST (char *, debuglib), arg); | |
191 | } | |
192 | break; | |
193 | ||
194 | case OPT_l: | |
195 | if ((strcmp (arg, LIBSTDCXX) == 0) | |
196 | || (strcmp (arg, LIBSTDCXX_PROFILE) == 0)) | |
197 | { | |
198 | args[i] |= WITHLIBCXX; | |
199 | need_stdcxx = false; | |
200 | } | |
201 | /* Unrecognized libraries (e.g. -ltango) may require libphobos. */ | |
202 | else if (phobos_library == PHOBOS_DEFAULT) | |
203 | phobos_library = PHOBOS_LINK; | |
204 | break; | |
205 | ||
206 | case OPT_pg: | |
207 | case OPT_p: | |
208 | saw_profile_flag++; | |
209 | break; | |
210 | ||
211 | case OPT_g: | |
212 | saw_debug_flag = true; | |
213 | break; | |
214 | ||
215 | case OPT_v: | |
216 | /* If they only gave us `-v', don't try to link in libphobos. */ | |
217 | if (argc == 2) | |
218 | phobos_library = PHOBOS_NOLINK; | |
219 | break; | |
220 | ||
221 | case OPT_x: | |
222 | if (phobos_library == PHOBOS_DEFAULT && (strcmp (arg, "d") == 0)) | |
223 | phobos_library = PHOBOS_LINK; | |
224 | break; | |
225 | ||
226 | case OPT_Xlinker: | |
227 | case OPT_Wl_: | |
228 | /* Arguments that go directly to the linker might be .o files | |
229 | or something, and so might cause libphobos to be needed. */ | |
230 | if (phobos_library == PHOBOS_DEFAULT) | |
231 | phobos_library = PHOBOS_LINK; | |
232 | break; | |
233 | ||
234 | case OPT_c: | |
235 | case OPT_E: | |
236 | case OPT_M: | |
237 | case OPT_MM: | |
238 | case OPT_fsyntax_only: | |
239 | /* Don't specify libaries if we won't link, since that would | |
240 | cause a warning. */ | |
241 | saw_opt_c = true; | |
242 | phobos_library = PHOBOS_NOLINK; | |
243 | break; | |
244 | ||
245 | case OPT_S: | |
246 | saw_opt_S = true; | |
247 | phobos_library = PHOBOS_NOLINK; | |
248 | break; | |
249 | ||
250 | case OPT_o: | |
251 | saw_opt_o = true; | |
252 | break; | |
253 | ||
254 | case OPT_static: | |
255 | static_link = true; | |
256 | break; | |
257 | ||
258 | case OPT_static_libgcc: | |
259 | shared_libgcc = false; | |
260 | break; | |
261 | ||
262 | case OPT_static_libphobos: | |
263 | if (phobos_library != PHOBOS_NOLINK) | |
264 | phobos_library = PHOBOS_STATIC; | |
265 | args[i] |= SKIPOPT; | |
266 | break; | |
267 | ||
268 | case OPT_shared_libphobos: | |
269 | if (phobos_library != PHOBOS_NOLINK) | |
270 | phobos_library = PHOBOS_DYNAMIC; | |
271 | args[i] |= SKIPOPT; | |
272 | break; | |
273 | ||
274 | case OPT_fonly_: | |
275 | args[i] |= SKIPOPT; | |
276 | only_source_option = decoded_options[i].orig_option_with_args_text; | |
277 | ||
278 | if (arg != NULL) | |
279 | { | |
280 | const char *suffix = strrchr (only_source_option, '.'); | |
281 | if (suffix == NULL || strcmp (suffix, ".d") != 0) | |
282 | only_source_option = concat (only_source_option, ".d", NULL); | |
283 | } | |
284 | break; | |
285 | ||
286 | case OPT_SPECIAL_input_file: | |
287 | { | |
288 | if (arg[0] == '\0' || arg[1] == '\0') | |
289 | continue; | |
290 | ||
291 | if (phobos_library == PHOBOS_DEFAULT) | |
292 | phobos_library = PHOBOS_LINK; | |
293 | ||
294 | /* Record that this is a D source file. */ | |
295 | const char *suffix = strrchr (arg, '.'); | |
296 | if (suffix != NULL && strcmp (suffix, ".d") == 0) | |
297 | { | |
298 | if (first_d_file == NULL) | |
299 | first_d_file = arg; | |
300 | ||
301 | args[i] |= DSOURCE; | |
302 | } | |
303 | ||
304 | /* If this is a C++ source file, we'll need to link | |
305 | against libstdc++ library. */ | |
306 | if (suffix != NULL | |
307 | && (strcmp (suffix, ".cc") == 0 | |
308 | || (strcmp (suffix, ".cpp") == 0) | |
309 | || (strcmp (suffix, ".c++") == 0))) | |
310 | need_stdcxx = true; | |
311 | ||
312 | break; | |
313 | } | |
314 | } | |
315 | } | |
316 | ||
317 | /* There's no point adding -shared-libgcc if we don't have a shared | |
318 | libgcc. */ | |
319 | #ifndef ENABLE_SHARED_LIBGCC | |
320 | shared_libgcc = false; | |
321 | #endif | |
322 | ||
323 | /* Make sure to have room for the trailing NULL argument. | |
324 | - needstdcxx might add `-lstdcxx' | |
325 | - libphobos adds `-Bstatic -lphobos -ldruntime -Bdynamic' | |
326 | - only_source adds 1 more arg, also maybe add `-o'. */ | |
327 | num_args = argc + need_stdcxx + shared_libgcc + need_phobos * 4 + 2; | |
328 | new_decoded_options = XNEWVEC (cl_decoded_option, num_args); | |
329 | ||
330 | i = 0; | |
331 | j = 0; | |
332 | ||
333 | /* Copy the 0th argument, i.e., the name of the program itself. */ | |
334 | new_decoded_options[j++] = decoded_options[i++]; | |
335 | ||
336 | /* NOTE: We start at 1 now, not 0. */ | |
337 | while (i < argc) | |
338 | { | |
339 | if (args[i] & SKIPOPT) | |
340 | { | |
341 | ++i; | |
342 | continue; | |
343 | } | |
344 | ||
345 | new_decoded_options[j] = decoded_options[i]; | |
346 | ||
347 | if (!saw_libcxx && (args[i] & WITHLIBCXX)) | |
348 | { | |
349 | --j; | |
350 | saw_libcxx = &decoded_options[i]; | |
351 | } | |
352 | ||
353 | if (args[i] & DSOURCE) | |
354 | { | |
355 | if (only_source_option) | |
356 | --j; | |
357 | } | |
358 | ||
359 | i++; | |
360 | j++; | |
361 | } | |
362 | ||
363 | if (only_source_option) | |
364 | { | |
365 | const char *only_source_arg = only_source_option + 7; | |
366 | generate_option (OPT_fonly_, only_source_arg, 1, CL_DRIVER, | |
367 | &new_decoded_options[j]); | |
368 | j++; | |
369 | ||
370 | generate_option_input_file (only_source_arg, | |
371 | &new_decoded_options[j++]); | |
372 | } | |
373 | ||
374 | /* If no reason to link against libphobos library, then don't add it. */ | |
375 | if (phobos_library == PHOBOS_DEFAULT) | |
376 | phobos_library = PHOBOS_NOLINK; | |
377 | ||
378 | /* If we didn't see a -o option, add one. This is because we need the | |
379 | driver to pass all .d files to the D compiler. Without a -o option | |
380 | the driver will invoke the compiler separately for each input file. */ | |
381 | if (first_d_file != NULL && !saw_opt_o) | |
382 | { | |
383 | if (saw_opt_c || saw_opt_S) | |
384 | { | |
385 | const char *base = lbasename (first_d_file); | |
386 | int baselen = strlen (base) - 2; | |
387 | char *out = XNEWVEC (char, baselen + 3); | |
388 | ||
389 | memcpy (out, base, baselen); | |
390 | /* The driver will convert .o to some other suffix if appropriate. */ | |
391 | out[baselen] = '.'; | |
392 | if (saw_opt_S) | |
393 | out[baselen + 1] = 's'; | |
394 | else | |
395 | out[baselen + 1] = 'o'; | |
396 | out[baselen + 2] = '\0'; | |
397 | generate_option (OPT_o, out, 1, CL_DRIVER, | |
398 | &new_decoded_options[j]); | |
399 | } | |
400 | else | |
401 | { | |
402 | /* Wouldn't be necessary if the driver converted .out also. */ | |
403 | const char *out = NULL; | |
404 | ||
405 | #ifdef TARGET_EXECUTABLE_SUFFIX | |
406 | if (TARGET_EXECUTABLE_SUFFIX[0] != 0) | |
407 | out = "a" TARGET_EXECUTABLE_SUFFIX; | |
408 | #endif | |
409 | if (out == NULL) | |
410 | out = "a.out"; | |
411 | ||
412 | generate_option (OPT_o, out, 1, CL_DRIVER, | |
413 | &new_decoded_options[j]); | |
414 | } | |
415 | j++; | |
416 | } | |
417 | ||
418 | /* Add `-lgphobos' if we haven't already done so. */ | |
419 | if (phobos_library != PHOBOS_NOLINK && need_phobos) | |
420 | { | |
421 | /* Default to static linking. */ | |
422 | if (phobos_library != PHOBOS_DYNAMIC) | |
423 | phobos_library = PHOBOS_STATIC; | |
424 | ||
425 | #ifdef HAVE_LD_STATIC_DYNAMIC | |
426 | if (phobos_library == PHOBOS_DYNAMIC && static_link) | |
427 | { | |
428 | generate_option (OPT_Wl_, LD_DYNAMIC_OPTION, 1, CL_DRIVER, | |
429 | &new_decoded_options[j]); | |
430 | j++; | |
431 | } | |
432 | else if (phobos_library == PHOBOS_STATIC && !static_link) | |
433 | { | |
434 | generate_option (OPT_Wl_, LD_STATIC_OPTION, 1, CL_DRIVER, | |
435 | &new_decoded_options[j]); | |
436 | j++; | |
437 | } | |
438 | #endif | |
439 | ||
440 | generate_option (OPT_l, | |
441 | saw_profile_flag ? LIBPHOBOS_PROFILE : LIBPHOBOS, 1, | |
442 | CL_DRIVER, &new_decoded_options[j]); | |
443 | added_libraries++; | |
444 | j++; | |
445 | generate_option (OPT_l, | |
446 | saw_profile_flag ? LIBDRUNTIME_PROFILE : LIBDRUNTIME, 1, | |
447 | CL_DRIVER, &new_decoded_options[j]); | |
448 | added_libraries++; | |
449 | j++; | |
450 | ||
451 | #ifdef HAVE_LD_STATIC_DYNAMIC | |
452 | if (phobos_library == PHOBOS_DYNAMIC && static_link) | |
453 | { | |
454 | generate_option (OPT_Wl_, LD_STATIC_OPTION, 1, CL_DRIVER, | |
455 | &new_decoded_options[j]); | |
456 | j++; | |
457 | } | |
458 | else if (phobos_library == PHOBOS_STATIC && !static_link) | |
459 | { | |
460 | generate_option (OPT_Wl_, LD_DYNAMIC_OPTION, 1, CL_DRIVER, | |
461 | &new_decoded_options[j]); | |
462 | j++; | |
463 | } | |
464 | #endif | |
465 | } | |
466 | else if (saw_debug_flag && debuglib) | |
467 | { | |
468 | generate_option (OPT_l, debuglib, 1, CL_DRIVER, | |
469 | &new_decoded_options[j++]); | |
470 | added_libraries++; | |
471 | } | |
472 | else if (defaultlib) | |
473 | { | |
474 | generate_option (OPT_l, defaultlib, 1, CL_DRIVER, | |
475 | &new_decoded_options[j++]); | |
476 | added_libraries++; | |
477 | } | |
478 | ||
479 | if (saw_libcxx) | |
480 | new_decoded_options[j++] = *saw_libcxx; | |
481 | else if (need_stdcxx) | |
482 | { | |
483 | generate_option (OPT_l, | |
484 | (saw_profile_flag | |
485 | ? LIBSTDCXX_PROFILE | |
486 | : LIBSTDCXX), | |
487 | 1, CL_DRIVER, &new_decoded_options[j++]); | |
488 | added_libraries++; | |
489 | } | |
490 | ||
491 | if (shared_libgcc && !static_link) | |
492 | { | |
493 | generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER, | |
494 | &new_decoded_options[j++]); | |
495 | } | |
496 | ||
497 | *in_decoded_options_count = j; | |
498 | *in_decoded_options = new_decoded_options; | |
499 | *in_added_libraries = added_libraries; | |
500 | } | |
501 | ||
502 | /* Called before linking. Returns 0 on success and -1 on failure. */ | |
503 | ||
504 | int | |
505 | lang_specific_pre_link (void) | |
506 | { | |
0b6e3127 | 507 | if ((phobos_library != PHOBOS_NOLINK && need_phobos) || need_spec) |
b4c522fa IB |
508 | do_spec ("%:include(libgphobos.spec)"); |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
513 | /* Number of extra output files that lang_specific_pre_link may generate. */ | |
514 | ||
515 | int lang_specific_extra_outfiles = 0; /* Not used for D. */ | |
516 |