160 lines
3.1 KiB
C
160 lines
3.1 KiB
C
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/* System dependent declarations.
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Copyright (C) 1988, 1989, 1992, 1993 Free Software Foundation, Inc.
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This file is part of GNU DIFF.
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GNU DIFF is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU DIFF is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU DIFF; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifndef S_ISDIR
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#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
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#endif
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#ifndef S_ISREG
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#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
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#endif
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if HAVE_TIME_H
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#include <time.h>
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#else
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#include <sys/time.h>
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#endif
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#if HAVE_FCNTL_H
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#include <fcntl.h>
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#else
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#include <sys/file.h>
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#endif
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#if !HAVE_DUP2
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#define dup2(f,t) (close (t), fcntl (f,F_DUPFD,t))
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#endif
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#ifndef O_RDONLY
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#define O_RDONLY 0
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#endif
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#if HAVE_SYS_WAIT_H
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#ifndef _POSIX_VERSION
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/* Prevent the NeXT prototype using union wait from causing problems. */
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#define wait system_wait
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#endif
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#include <sys/wait.h>
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#ifndef _POSIX_VERSION
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#undef wait
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#endif
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#endif /* HAVE_SYS_WAIT_H */
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#ifndef WEXITSTATUS
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#define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
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#undef WIFEXITED /* Avoid 4.3BSD incompatibility with Posix. */
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#endif
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#ifndef WIFEXITED
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#define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
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#endif
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#if HAVE_ST_BLKSIZE
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#define STAT_BLOCKSIZE(s) (s).st_blksize
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#else
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#define STAT_BLOCKSIZE(s) (S_ISREG ((s).st_mode) ? 8192 : 4096)
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#endif
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#if DIRENT || defined (_POSIX_VERSION)
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#include <dirent.h>
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#ifdef direct
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#undef direct
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#endif
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#define direct dirent
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#else /* ! (DIRENT || defined (_POSIX_VERSION)) */
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#if SYSNDIR
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#include <sys/ndir.h>
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#else
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#if SYSDIR
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#include <sys/dir.h>
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#else
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#include <ndir.h>
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#endif
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#endif
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#endif /* ! (DIRENT || defined (_POSIX_VERSION)) */
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#if HAVE_VFORK_H
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#include <vfork.h>
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#endif
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#if HAVE_STRING_H || STDC_HEADERS
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#include <string.h>
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#ifndef index
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#define index strchr
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#endif
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#ifndef rindex
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#define rindex strrchr
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#endif
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#ifndef bcopy
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#define bcopy(s,d,n) memcpy (d,s,n)
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#endif
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#ifndef bcmp
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#define bcmp(s1,s2,n) memcmp (s1,s2,n)
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#endif
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#ifndef bzero
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#define bzero(s,n) memset (s,0,n)
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#endif
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#else
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#include <strings.h>
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#endif
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#if !HAVE_MEMCHR && !STDC_HEADERS
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char *memchr ();
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#endif
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#if STDC_HEADERS
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#include <stdlib.h>
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#include <limits.h>
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#else
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char *getenv ();
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char *malloc ();
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char *realloc ();
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#if __STDC__ || __GNUC__
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#include "limits.h"
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#else
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#define INT_MAX 2147483647
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#define CHAR_BIT 8
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#endif
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#endif
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#include <errno.h>
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#if !STDC_HEADERS
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extern int errno;
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#endif
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#ifdef TRUE
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#undef TRUE
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#endif
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#ifdef FALSE
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#undef FALSE
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#endif
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#define TRUE 1
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#define FALSE 0
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#if !__STDC__
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#define volatile
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#endif
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#define min(a,b) ((a) <= (b) ? (a) : (b))
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#define max(a,b) ((a) >= (b) ? (a) : (b))
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