/* system.h - Get common system includes and various definitions and declarations based on autoconf macros. Copyright (C) 1998 Free Software Foundation, Inc. */ #ifndef __GCC_SYSTEM_H__ #define __GCC_SYSTEM_H__ #include /* Define a generic NULL if one hasn't already been defined. */ #ifndef NULL #define NULL 0 #endif #include /* Jim Meyering writes: "... Some ctype macros are valid only for character codes that isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when using /bin/cc or gcc but without giving an ansi option). So, all ctype uses should be through macros like ISPRINT... If STDC_HEADERS is defined, then autoconf has verified that the ctype macros don't need to be guarded with references to isascii. ... Defining isascii to 1 should let any compiler worth its salt eliminate the && through constant folding." Bruno Haible adds: "... Furthermore, isupper(c) etc. have an undefined result if c is outside the range -1 <= c <= 255. One is tempted to write isupper(c) with c being of type `char', but this is wrong if c is an 8-bit character >= 128 which gets sign-extended to a negative value. The macro ISUPPER protects against this as well." */ #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII)) # define IN_CTYPE_DOMAIN(c) 1 #else # define IN_CTYPE_DOMAIN(c) isascii(c) #endif #ifdef isblank # define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c)) #else # define ISBLANK(c) ((c) == ' ' || (c) == '\t') #endif #ifdef isgraph # define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c)) #else # define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c)) #endif #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c)) #define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c)) #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c)) #define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (c)) #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c)) #define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (c)) #define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c)) #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c)) #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c)) #define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (c)) /* ISDIGIT differs from ISDIGIT_LOCALE, as follows: - Its arg may be any int or unsigned int; it need not be an unsigned char. - It's guaranteed to evaluate its argument exactly once. - It's typically faster. Posix 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that only '0' through '9' are digits. Prefer ISDIGIT to ISDIGIT_LOCALE unless it's important to use the locale's definition of `digit' even when the host does not conform to Posix. */ #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9) #include #include #ifndef errno extern int errno; #endif #ifdef HAVE_STRING_H # include #else # ifdef HAVE_STRINGS_H # include # endif #endif #ifdef HAVE_STDLIB_H # include #endif #ifdef HAVE_UNISTD_H # include #endif #ifdef HAVE_SYS_PARAM_H # include #endif #if HAVE_LIMITS_H # include #endif #ifdef TIME_WITH_SYS_TIME # include # include #else # if HAVE_SYS_TIME_H # include # else # ifdef HAVE_TIME_H # include # endif # endif #endif #ifdef HAVE_FCNTL_H # include #else # ifdef HAVE_SYS_FILE_H # include # endif #endif #ifndef SEEK_SET # define SEEK_SET 0 # define SEEK_CUR 1 # define SEEK_END 2 #endif #ifndef F_OK # define F_OK 0 # define X_OK 1 # define W_OK 2 # define R_OK 4 #endif #ifndef O_RDONLY # define O_RDONLY 0 #endif #ifndef O_WRONLY # define O_WRONLY 1 #endif #ifndef bcopy # ifdef HAVE_BCOPY # ifdef NEED_DECLARATION_BCOPY extern void bcopy (); # endif # else /* ! HAVE_BCOPY */ # define bcopy(src,dst,len) memcpy ((dst),(src),(len)) # endif #endif #ifndef bcmp # ifdef HAVE_BCMP # ifdef NEED_DECLARATION_BCMP extern int bcmp (); # endif # else /* ! HAVE_BCMP */ # define bcmp(left,right,len) memcmp ((left),(right),(len)) # endif #endif #ifndef bzero # ifdef HAVE_BZERO # ifdef NEED_DECLARATION_BZERO extern void bzero (); # endif # else /* ! HAVE_BZERO */ # define bzero(dst,len) memset ((dst),0,(len)) # endif #endif #ifndef index # ifdef HAVE_INDEX # ifdef NEED_DECLARATION_INDEX extern char *index (); # endif # else /* ! HAVE_INDEX */ # define index strchr # endif #endif #ifndef rindex # ifdef HAVE_RINDEX # ifdef NEED_DECLARATION_RINDEX extern char *rindex (); # endif # else /* ! HAVE_RINDEX */ # define rindex strrchr # endif #endif #ifdef NEED_DECLARATION_ATOF extern double atof (); #endif #ifdef NEED_DECLARATION_ATOL extern long atol(); #endif #ifdef NEED_DECLARATION_FREE extern void free (); #endif #ifdef NEED_DECLARATION_GETCWD extern char *getcwd (); #endif #ifdef NEED_DECLARATION_GETENV extern char *getenv (); #endif #ifdef NEED_DECLARATION_GETWD extern char *getwd (); #endif #ifdef NEED_DECLARATION_SBRK extern char *sbrk (); #endif #ifdef HAVE_STRERROR # ifdef NEED_DECLARATION_STRERROR # ifndef strerror extern char *strerror (); # endif # endif #else /* ! HAVE_STRERROR */ extern int sys_nerr; extern char *sys_errlist[]; #endif /* HAVE_STRERROR */ #ifdef HAVE_GETRLIMIT # ifdef NEED_DECLARATION_GETRLIMIT # ifndef getrlimit extern int getrlimit (); # endif # endif #endif #ifdef HAVE_SETRLIMIT # ifdef NEED_DECLARATION_SETRLIMIT # ifndef setrlimit extern int setrlimit (); # endif # endif #endif /* HAVE_VOLATILE only refers to the stage1 compiler. We also check __STDC__ and assume gcc sets it and has volatile in stage >=2. */ #if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile) #define volatile #endif /* Redefine abort to report an internal error w/o coredump, and reporting the location of the error in the source file. */ #ifndef abort #ifndef __STDC__ #ifndef __GNUC__ #ifndef USE_SYSTEM_ABORT #define USE_SYSTEM_ABORT #endif /* !USE_SYSTEM_ABORT */ #endif /* !__GNUC__ */ #endif /* !__STDC__ */ #ifdef USE_SYSTEM_ABORT # ifdef NEED_DECLARATION_ABORT extern void abort (); # endif #else #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) #define abort() \ (fprintf (stderr, \ "%s:%d: Internal compiler error\n", __FILE__, __LINE__), \ exit (FATAL_EXIT_CODE)) #else #define abort() \ (fprintf (stderr, \ "%s:%d: Internal compiler error in function %s\n", \ __FILE__, __LINE__, __PRETTY_FUNCTION__), \ exit (FATAL_EXIT_CODE)) #endif /* recent gcc */ #endif /* USE_SYSTEM_ABORT */ #endif /* !abort */ /* Define a STRINGIFY macro that's right for ANSI or traditional C. HAVE_CPP_STRINGIFY only refers to the stage1 compiler. Assume that (non-traditional) gcc used in stage2 or later has this feature. Note: if the argument passed to STRINGIFY is itself a macro, eg #define foo bar, STRINGIFY(foo) will produce "foo", not "bar". Although the __STDC__ case could be made to expand this via a layer of indirection, the traditional C case can not do so. Therefore this behavior is not supported. */ #ifndef STRINGIFY # if defined(HAVE_CPP_STRINGIFY) || (defined(__GNUC__) && defined(__STDC__)) # define STRINGIFY(STRING) #STRING # else # define STRINGIFY(STRING) "STRING" # endif #endif /* ! STRINGIFY */ /* These macros are here in preparation for the use of gettext in egcs. */ #define _(String) String #define N_(String) String #endif /* __GCC_SYSTEM_H__ */