1 /* system.h - Get common system includes and various definitions and
2 declarations based on autoconf macros.
3 Copyright (C) 1998 Free Software Foundation, Inc.
7 #ifndef __GCC_SYSTEM_H__
8 #define __GCC_SYSTEM_H__
10 /* We must include stdarg.h/varargs.h before stdio.h. */
11 #ifdef ANSI_PROTOTYPES
19 /* Define a generic NULL if one hasn't already been defined. */
26 /* Jim Meyering writes:
28 "... Some ctype macros are valid only for character codes that
29 isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
30 using /bin/cc or gcc but without giving an ansi option). So, all
31 ctype uses should be through macros like ISPRINT... If
32 STDC_HEADERS is defined, then autoconf has verified that the ctype
33 macros don't need to be guarded with references to isascii. ...
34 Defining isascii to 1 should let any compiler worth its salt
35 eliminate the && through constant folding."
39 "... Furthermore, isupper(c) etc. have an undefined result if c is
40 outside the range -1 <= c <= 255. One is tempted to write isupper(c)
41 with c being of type `char', but this is wrong if c is an 8-bit
42 character >= 128 which gets sign-extended to a negative value.
43 The macro ISUPPER protects against this as well." */
45 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
46 # define IN_CTYPE_DOMAIN(c) 1
48 # define IN_CTYPE_DOMAIN(c) isascii(c)
52 # define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c))
54 # define ISBLANK(c) ((c) == ' ' || (c) == '\t')
57 # define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c))
59 # define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c))
62 #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
63 #define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c))
64 #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
65 #define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (c))
66 #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
67 #define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (c))
68 #define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
69 #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
70 #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
71 #define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
73 /* ISDIGIT differs from ISDIGIT_LOCALE, as follows:
74 - Its arg may be any int or unsigned int; it need not be an unsigned char.
75 - It's guaranteed to evaluate its argument exactly once.
76 - It's typically faster.
77 Posix 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
78 only '0' through '9' are digits. Prefer ISDIGIT to ISDIGIT_LOCALE unless
79 it's important to use the locale's definition of `digit' even when the
80 host does not conform to Posix. */
81 #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
84 #include <sys/types.h>
91 #ifdef STRING_WITH_STRINGS
98 # ifdef HAVE_STRINGS_H
112 #ifdef HAVE_SYS_PARAM_H
113 # include <sys/param.h>
120 #ifdef TIME_WITH_SYS_TIME
121 # include <sys/time.h>
125 # include <sys/time.h>
136 # ifdef HAVE_SYS_FILE_H
137 # include <sys/file.h>
159 #ifdef HAVE_SYS_WAIT_H
160 #include <sys/wait.h>
164 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
167 #define WTERMSIG(S) ((S) & 0x7f)
170 #define WIFEXITED(S) (((S) & 0xff) == 0)
173 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
180 # ifdef NEED_DECLARATION_BCOPY
181 extern void bcopy ();
183 # else /* ! HAVE_BCOPY */
184 # define bcopy(src,dst,len) memcpy ((dst),(src),(len))
190 # ifdef NEED_DECLARATION_BCMP
193 # else /* ! HAVE_BCMP */
194 # define bcmp(left,right,len) memcmp ((left),(right),(len))
200 # ifdef NEED_DECLARATION_BZERO
201 extern void bzero ();
203 # else /* ! HAVE_BZERO */
204 # define bzero(dst,len) memset ((dst),0,(len))
210 # ifdef NEED_DECLARATION_INDEX
211 extern char *index ();
213 # else /* ! HAVE_INDEX */
214 # define index strchr
220 # ifdef NEED_DECLARATION_RINDEX
221 extern char *rindex ();
223 # else /* ! HAVE_RINDEX */
224 # define rindex strrchr
228 #ifdef NEED_DECLARATION_ATOF
229 extern double atof ();
232 #ifdef NEED_DECLARATION_ATOL
236 #ifdef NEED_DECLARATION_FREE
240 #ifdef NEED_DECLARATION_GETCWD
241 extern char *getcwd ();
244 #ifdef NEED_DECLARATION_GETENV
245 extern char *getenv ();
248 #ifdef NEED_DECLARATION_GETWD
249 extern char *getwd ();
252 #ifdef NEED_DECLARATION_SBRK
253 extern char *sbrk ();
257 # ifdef NEED_DECLARATION_STRERROR
259 extern char *strerror ();
262 #else /* ! HAVE_STRERROR */
264 extern char *sys_errlist[];
265 #endif /* HAVE_STRERROR */
267 #ifdef HAVE_STRSIGNAL
268 # ifdef NEED_DECLARATION_STRSIGNAL
270 extern char * strsignal ();
273 #else /* ! HAVE_STRSIGNAL */
274 # ifndef SYS_SIGLIST_DECLARED
275 # ifndef NO_SYS_SIGLIST
276 extern char * sys_siglist[];
279 #endif /* HAVE_STRSIGNAL */
281 #ifdef HAVE_GETRLIMIT
282 # ifdef NEED_DECLARATION_GETRLIMIT
284 extern int getrlimit ();
289 #ifdef HAVE_SETRLIMIT
290 # ifdef NEED_DECLARATION_SETRLIMIT
292 extern int setrlimit ();
297 /* HAVE_VOLATILE only refers to the stage1 compiler. We also check
298 __STDC__ and assume gcc sets it and has volatile in stage >=2. */
299 #if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile)
303 /* Redefine abort to report an internal error w/o coredump, and reporting the
304 location of the error in the source file. */
308 #ifndef USE_SYSTEM_ABORT
309 #define USE_SYSTEM_ABORT
310 #endif /* !USE_SYSTEM_ABORT */
311 #endif /* !__GNUC__ */
312 #endif /* !__STDC__ */
314 #ifdef USE_SYSTEM_ABORT
315 # ifdef NEED_DECLARATION_ABORT
316 extern void abort ();
319 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
322 "%s:%d: Internal compiler error\n", __FILE__, __LINE__), \
323 exit (FATAL_EXIT_CODE))
328 "%s:%d: Internal compiler error in function %s\n", \
329 __FILE__, __LINE__, __PRETTY_FUNCTION__), \
330 exit (FATAL_EXIT_CODE))
332 #endif /* recent gcc */
333 #endif /* USE_SYSTEM_ABORT */
337 /* Define a STRINGIFY macro that's right for ANSI or traditional C.
338 HAVE_CPP_STRINGIFY only refers to the stage1 compiler. Assume that
339 (non-traditional) gcc used in stage2 or later has this feature.
341 Note: if the argument passed to STRINGIFY is itself a macro, eg
342 #define foo bar, STRINGIFY(foo) will produce "foo", not "bar".
343 Although the __STDC__ case could be made to expand this via a layer
344 of indirection, the traditional C case can not do so. Therefore
345 this behavior is not supported. */
347 # if defined(HAVE_CPP_STRINGIFY) || (defined(__GNUC__) && defined(__STDC__))
348 # define STRINGIFY(STRING) #STRING
350 # define STRINGIFY(STRING) "STRING"
352 #endif /* ! STRINGIFY */
355 /* These macros are here in preparation for the use of gettext in egcs. */
356 #define _(String) String
357 #define N_(String) String
360 /* Test if something is a normal file. */
362 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
365 /* Test if something is a directory. */
367 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
370 #endif /* __GCC_SYSTEM_H__ */