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4f4e53dd PB |
1 | /* Get common system includes and various definitions and declarations based |
2 | on autoconf macros. | |
3 | Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 | |
4 | Free Software Foundation, Inc. | |
5 | ||
6 | This file is part of libcpp (aka cpplib). | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 2, or (at your option) any later | |
11 | version. | |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GCC; see the file COPYING. If not, write to the Free | |
200031d1 KC |
20 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
4f4e53dd PB |
22 | |
23 | ||
24 | #ifndef LIBCPP_SYSTEM_H | |
25 | #define LIBCPP_SYSTEM_H | |
26 | ||
27 | /* We must include stdarg.h before stdio.h. */ | |
28 | #include <stdarg.h> | |
29 | ||
30 | #ifdef HAVE_STDDEF_H | |
31 | # include <stddef.h> | |
32 | #endif | |
33 | ||
34 | #include <stdio.h> | |
35 | ||
36 | /* Define a generic NULL if one hasn't already been defined. */ | |
37 | #ifndef NULL | |
38 | #define NULL 0 | |
39 | #endif | |
40 | ||
042630ad KG |
41 | /* Use the unlocked open routines from libiberty. */ |
42 | #define fopen(PATH,MODE) fopen_unlocked(PATH,MODE) | |
43 | #define fdopen(FILDES,MODE) fdopen_unlocked(FILDES,MODE) | |
44 | #define freopen(PATH,MODE,STREAM) freopen_unlocked(PATH,MODE,STREAM) | |
45 | ||
4f4e53dd PB |
46 | /* The compiler is not a multi-threaded application and therefore we |
47 | do not have to use the locking functions. In fact, using the locking | |
48 | functions can cause the compiler to be significantly slower under | |
49 | I/O bound conditions (such as -g -O0 on very large source files). | |
50 | ||
51 | HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio | |
52 | code is multi-thread safe by default. If it is set to 0, then do | |
53 | not worry about using the _unlocked functions. | |
54 | ||
55 | fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are | |
56 | extensions and need to be prototyped by hand (since we do not | |
57 | define _GNU_SOURCE). */ | |
58 | ||
59 | #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED | |
60 | ||
61 | # ifdef HAVE_PUTC_UNLOCKED | |
62 | # undef putc | |
63 | # define putc(C, Stream) putc_unlocked (C, Stream) | |
64 | # endif | |
0d667716 KG |
65 | # ifdef HAVE_PUTCHAR_UNLOCKED |
66 | # undef putchar | |
67 | # define putchar(C) putchar_unlocked (C) | |
68 | # endif | |
69 | # ifdef HAVE_GETC_UNLOCKED | |
70 | # undef getc | |
71 | # define getc(Stream) getc_unlocked (Stream) | |
72 | # endif | |
73 | # ifdef HAVE_GETCHAR_UNLOCKED | |
74 | # undef getchar | |
75 | # define getchar() getchar_unlocked () | |
76 | # endif | |
4f4e53dd PB |
77 | # ifdef HAVE_FPUTC_UNLOCKED |
78 | # undef fputc | |
79 | # define fputc(C, Stream) fputc_unlocked (C, Stream) | |
80 | # endif | |
81 | ||
0d667716 KG |
82 | # ifdef HAVE_CLEARERR_UNLOCKED |
83 | # undef clearerr | |
84 | # define clearerr(Stream) clearerr_unlocked (Stream) | |
85 | # if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED | |
86 | extern void clearerr_unlocked (FILE *); | |
87 | # endif | |
88 | # endif | |
89 | # ifdef HAVE_FEOF_UNLOCKED | |
90 | # undef feof | |
91 | # define feof(Stream) feof_unlocked (Stream) | |
92 | # if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED | |
93 | extern int feof_unlocked (FILE *); | |
94 | # endif | |
95 | # endif | |
96 | # ifdef HAVE_FILENO_UNLOCKED | |
97 | # undef fileno | |
98 | # define fileno(Stream) fileno_unlocked (Stream) | |
99 | # if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED | |
100 | extern int fileno_unlocked (FILE *); | |
101 | # endif | |
102 | # endif | |
103 | # ifdef HAVE_FFLUSH_UNLOCKED | |
104 | # undef fflush | |
105 | # define fflush(Stream) fflush_unlocked (Stream) | |
106 | # if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED | |
107 | extern int fflush_unlocked (FILE *); | |
108 | # endif | |
109 | # endif | |
110 | # ifdef HAVE_FGETC_UNLOCKED | |
111 | # undef fgetc | |
112 | # define fgetc(Stream) fgetc_unlocked (Stream) | |
113 | # if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED | |
114 | extern int fgetc_unlocked (FILE *); | |
115 | # endif | |
116 | # endif | |
117 | # ifdef HAVE_FGETS_UNLOCKED | |
118 | # undef fgets | |
119 | # define fgets(S, n, Stream) fgets_unlocked (S, n, Stream) | |
120 | # if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED | |
121 | extern char *fgets_unlocked (char *, int, FILE *); | |
122 | # endif | |
123 | # endif | |
4f4e53dd PB |
124 | # ifdef HAVE_FPUTS_UNLOCKED |
125 | # undef fputs | |
126 | # define fputs(String, Stream) fputs_unlocked (String, Stream) | |
127 | # if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED | |
128 | extern int fputs_unlocked (const char *, FILE *); | |
129 | # endif | |
130 | # endif | |
0d667716 KG |
131 | # ifdef HAVE_FERROR_UNLOCKED |
132 | # undef ferror | |
133 | # define ferror(Stream) ferror_unlocked (Stream) | |
134 | # if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED | |
135 | extern int ferror_unlocked (FILE *); | |
136 | # endif | |
137 | # endif | |
138 | # ifdef HAVE_FREAD_UNLOCKED | |
139 | # undef fread | |
140 | # define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream) | |
141 | # if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED | |
142 | extern size_t fread_unlocked (void *, size_t, size_t, FILE *); | |
143 | # endif | |
144 | # endif | |
4f4e53dd PB |
145 | # ifdef HAVE_FWRITE_UNLOCKED |
146 | # undef fwrite | |
147 | # define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream) | |
148 | # if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED | |
0d667716 | 149 | extern size_t fwrite_unlocked (const void *, size_t, size_t, FILE *); |
4f4e53dd PB |
150 | # endif |
151 | # endif | |
152 | # ifdef HAVE_FPRINTF_UNLOCKED | |
153 | # undef fprintf | |
154 | /* We can't use a function-like macro here because we don't know if | |
155 | we have varargs macros. */ | |
156 | # define fprintf fprintf_unlocked | |
157 | # if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED | |
158 | extern int fprintf_unlocked (FILE *, const char *, ...); | |
159 | # endif | |
160 | # endif | |
161 | ||
162 | #endif | |
163 | ||
164 | /* ??? Glibc's fwrite/fread_unlocked macros cause | |
165 | "warning: signed and unsigned type in conditional expression". */ | |
166 | #undef fread_unlocked | |
167 | #undef fwrite_unlocked | |
168 | ||
169 | #include <sys/types.h> | |
170 | #include <errno.h> | |
171 | ||
172 | #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO | |
173 | extern int errno; | |
174 | #endif | |
175 | ||
176 | /* Some of glibc's string inlines cause warnings. Plus we'd rather | |
177 | rely on (and therefore test) GCC's string builtins. */ | |
178 | #define __NO_STRING_INLINES | |
179 | ||
180 | #ifdef STRING_WITH_STRINGS | |
181 | # include <string.h> | |
182 | # include <strings.h> | |
183 | #else | |
184 | # ifdef HAVE_STRING_H | |
185 | # include <string.h> | |
186 | # else | |
187 | # ifdef HAVE_STRINGS_H | |
188 | # include <strings.h> | |
189 | # endif | |
190 | # endif | |
191 | #endif | |
192 | ||
193 | #ifdef HAVE_STDLIB_H | |
194 | # include <stdlib.h> | |
195 | #endif | |
196 | ||
197 | #ifdef HAVE_UNISTD_H | |
198 | # include <unistd.h> | |
199 | #endif | |
200 | ||
201 | #if HAVE_LIMITS_H | |
202 | # include <limits.h> | |
203 | #endif | |
204 | ||
205 | /* Infrastructure for defining missing _MAX and _MIN macros. Note that | |
206 | macros defined with these cannot be used in #if. */ | |
207 | ||
208 | /* The extra casts work around common compiler bugs. */ | |
209 | #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1)) | |
210 | /* The outer cast is needed to work around a bug in Cray C 5.0.3.0. | |
211 | It is necessary at least when t == time_t. */ | |
212 | #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \ | |
213 | ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0)) | |
214 | #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t))) | |
215 | ||
216 | /* Use that infrastructure to provide a few constants. */ | |
217 | #ifndef UCHAR_MAX | |
218 | # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char) | |
219 | #endif | |
220 | ||
221 | #ifdef TIME_WITH_SYS_TIME | |
222 | # include <sys/time.h> | |
223 | # include <time.h> | |
224 | #else | |
225 | # if HAVE_SYS_TIME_H | |
226 | # include <sys/time.h> | |
227 | # else | |
228 | # ifdef HAVE_TIME_H | |
229 | # include <time.h> | |
230 | # endif | |
231 | # endif | |
232 | #endif | |
233 | ||
234 | #ifdef HAVE_FCNTL_H | |
235 | # include <fcntl.h> | |
236 | #else | |
237 | # ifdef HAVE_SYS_FILE_H | |
238 | # include <sys/file.h> | |
239 | # endif | |
240 | #endif | |
241 | ||
242 | #ifdef HAVE_LOCALE_H | |
243 | # include <locale.h> | |
244 | #endif | |
245 | ||
246 | #ifdef HAVE_LANGINFO_CODESET | |
247 | # include <langinfo.h> | |
248 | #endif | |
249 | ||
250 | #ifndef HAVE_SETLOCALE | |
251 | # define setlocale(category, locale) (locale) | |
252 | #endif | |
253 | ||
254 | #ifdef ENABLE_NLS | |
255 | #include <libintl.h> | |
256 | #else | |
257 | /* Stubs. */ | |
258 | # undef dgettext | |
c86dd7db | 259 | # define dgettext(package, msgid) (msgid) |
4f4e53dd PB |
260 | #endif |
261 | ||
262 | #ifndef _ | |
263 | # define _(msgid) dgettext (PACKAGE, msgid) | |
264 | #endif | |
265 | ||
266 | #ifndef N_ | |
267 | # define N_(msgid) msgid | |
268 | #endif | |
269 | ||
270 | /* Some systems define these in, e.g., param.h. We undefine these names | |
271 | here to avoid the warnings. We prefer to use our definitions since we | |
272 | know they are correct. */ | |
273 | ||
274 | #undef MIN | |
275 | #undef MAX | |
276 | #define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) | |
277 | #define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) | |
278 | ||
279 | /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they | |
280 | are defined to 0 then we must provide the relevant declaration | |
281 | here. These checks will be in the undefined state while configure | |
282 | is running so be careful to test "defined (HAVE_DECL_*)". */ | |
283 | ||
284 | #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT | |
285 | extern void abort (void); | |
286 | #endif | |
287 | ||
288 | #if HAVE_SYS_STAT_H | |
289 | # include <sys/stat.h> | |
290 | #endif | |
291 | ||
292 | /* Test if something is a normal file. */ | |
293 | #ifndef S_ISREG | |
294 | #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
295 | #endif | |
296 | ||
297 | /* Test if something is a directory. */ | |
298 | #ifndef S_ISDIR | |
299 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
300 | #endif | |
301 | ||
302 | /* Test if something is a character special file. */ | |
303 | #ifndef S_ISCHR | |
304 | #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) | |
305 | #endif | |
306 | ||
307 | /* Test if something is a block special file. */ | |
308 | #ifndef S_ISBLK | |
309 | #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) | |
310 | #endif | |
311 | ||
312 | /* Test if something is a socket. */ | |
313 | #ifndef S_ISSOCK | |
314 | # ifdef S_IFSOCK | |
315 | # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) | |
316 | # else | |
317 | # define S_ISSOCK(m) 0 | |
318 | # endif | |
319 | #endif | |
320 | ||
321 | /* Test if something is a FIFO. */ | |
322 | #ifndef S_ISFIFO | |
323 | # ifdef S_IFIFO | |
324 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
325 | # else | |
326 | # define S_ISFIFO(m) 0 | |
327 | # endif | |
328 | #endif | |
329 | ||
330 | /* Approximate O_NOCTTY and O_BINARY. */ | |
331 | #ifndef O_NOCTTY | |
332 | #define O_NOCTTY 0 | |
333 | #endif | |
334 | #ifndef O_BINARY | |
335 | # define O_BINARY 0 | |
336 | #endif | |
337 | ||
338 | /* Filename handling macros. */ | |
339 | #include "filenames.h" | |
340 | ||
341 | /* Get libiberty declarations. */ | |
342 | #include "libiberty.h" | |
343 | #include "safe-ctype.h" | |
344 | ||
c3f829c1 GDR |
345 | /* 1 if we have C99 designated initializers. |
346 | ||
347 | ??? C99 designated initializers are not supported by most C++ | |
348 | compilers, including G++. -- gdr, 2005-05-18 */ | |
4f4e53dd PB |
349 | #if !defined(HAVE_DESIGNATED_INITIALIZERS) |
350 | #define HAVE_DESIGNATED_INITIALIZERS \ | |
c3f829c1 GDR |
351 | ((!defined(__cplusplus) && (GCC_VERSION >= 2007)) \ |
352 | || (__STDC_VERSION__ >= 199901L)) | |
4f4e53dd PB |
353 | #endif |
354 | ||
4f4e53dd PB |
355 | /* Be conservative and only use enum bitfields with GCC. |
356 | FIXME: provide a complete autoconf test for buggy enum bitfields. */ | |
357 | ||
358 | #if (GCC_VERSION > 2000) | |
359 | #define ENUM_BITFIELD(TYPE) __extension__ enum TYPE | |
360 | #else | |
361 | #define ENUM_BITFIELD(TYPE) unsigned int | |
362 | #endif | |
363 | ||
4f4e53dd PB |
364 | #ifndef offsetof |
365 | #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER) | |
366 | #endif | |
367 | ||
368 | /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that | |
369 | the most likely value of A is B. This feature was added at some point | |
370 | between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */ | |
371 | #if (GCC_VERSION < 3000) | |
372 | #define __builtin_expect(a, b) (a) | |
373 | #endif | |
374 | ||
2fac9c01 ZW |
375 | /* Provide a fake boolean type. We make no attempt to use the |
376 | C99 _Bool, as it may not be available in the bootstrap compiler, | |
377 | and even if it is, it is liable to be buggy. | |
378 | This must be after all inclusion of system headers, as some of | |
379 | them will mess us up. */ | |
4f4e53dd PB |
380 | #undef bool |
381 | #undef true | |
382 | #undef false | |
383 | #undef TRUE | |
384 | #undef FALSE | |
385 | ||
c3f829c1 | 386 | #ifndef __cplusplus |
2fac9c01 | 387 | #define bool unsigned char |
c3f829c1 | 388 | #endif |
2fac9c01 ZW |
389 | #define true 1 |
390 | #define false 0 | |
4f4e53dd | 391 | |
2fac9c01 ZW |
392 | /* Some compilers do not allow the use of unsigned char in bitfields. */ |
393 | #define BOOL_BITFIELD unsigned int | |
394 | ||
395 | /* Poison identifiers we do not want to use. */ | |
4f4e53dd PB |
396 | #if (GCC_VERSION >= 3000) |
397 | #undef calloc | |
398 | #undef strdup | |
399 | #undef malloc | |
400 | #undef realloc | |
401 | #pragma GCC poison calloc strdup | |
402 | #pragma GCC poison malloc realloc | |
403 | ||
404 | /* Libiberty macros that are no longer used in GCC. */ | |
405 | #undef ANSI_PROTOTYPES | |
406 | #undef PTR_CONST | |
407 | #undef LONG_DOUBLE | |
408 | #undef VPARAMS | |
409 | #undef VA_OPEN | |
410 | #undef VA_FIXEDARG | |
411 | #undef VA_CLOSE | |
412 | #undef VA_START | |
413 | #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \ | |
414 | VA_FIXEDARG VA_CLOSE VA_START | |
415 | ||
416 | /* Note: not all uses of the `index' token (e.g. variable names and | |
417 | structure members) have been eliminated. */ | |
418 | #undef bcopy | |
419 | #undef bzero | |
420 | #undef bcmp | |
421 | #undef rindex | |
422 | #pragma GCC poison bcopy bzero bcmp rindex | |
423 | ||
424 | #endif /* GCC >= 3.0 */ | |
4f4e53dd | 425 | #endif /* ! LIBCPP_SYSTEM_H */ |