fixincludes/system.h

   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
  20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  21 02111-1307, USA.  */
  22
  23
  24 #ifndef FIXINC_SYSTEM_H
  25 #define FIXINC_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
  41 /* fixincludes is not a multi-threaded application and therefore we
  42    do not have to use the locking functions.  In fact, using the locking
  43    functions can cause the compiler to be significantly slower under
  44    I/O bound conditions (such as -g -O0 on very large source files).
  45
  46    HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
  47    code is multi-thread safe by default.  If it is set to 0, then do
  48    not worry about using the _unlocked functions.
  49
  50    fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
  51    extensions and need to be prototyped by hand (since we do not
  52    define _GNU_SOURCE).  */
  53
  54 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
  55
  56 # ifdef HAVE_PUTC_UNLOCKED
  57 #  undef putc
  58 #  define putc(C, Stream) putc_unlocked (C, Stream)
  59 # endif
  60 # ifdef HAVE_FPUTC_UNLOCKED
  61 #  undef fputc
  62 #  define fputc(C, Stream) fputc_unlocked (C, Stream)
  63 # endif
  64
  65 # ifdef HAVE_FPUTS_UNLOCKED
  66 #  undef fputs
  67 #  define fputs(String, Stream) fputs_unlocked (String, Stream)
  68 #  if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
  69 extern int fputs_unlocked (const char *, FILE *);
  70 #  endif
  71 # endif
  72 # ifdef HAVE_FWRITE_UNLOCKED
  73 #  undef fwrite
  74 #  define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
  75 #  if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
  76 extern int fwrite_unlocked (const void *, size_t, size_t, FILE *);
  77 #  endif
  78 # endif
  79 # ifdef HAVE_FPRINTF_UNLOCKED
  80 #  undef fprintf
  81 /* We can't use a function-like macro here because we don't know if
  82    we have varargs macros.  */
  83 #  define fprintf fprintf_unlocked
  84 #  if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
  85 extern int fprintf_unlocked (FILE *, const char *, ...);
  86 #  endif
  87 # endif
  88
  89 #endif
  90
  91 /* ??? Glibc's fwrite/fread_unlocked macros cause
  92    "warning: signed and unsigned type in conditional expression".  */
  93 #undef fread_unlocked
  94 #undef fwrite_unlocked
  95
  96 #include <sys/types.h>
  97 #include <errno.h>
  98
  99 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
 100 extern int errno;
 101 #endif
 102
 103 /* Some of glibc's string inlines cause warnings.  Plus we'd rather
 104    rely on (and therefore test) GCC's string builtins.  */
 105 #define __NO_STRING_INLINES
 106
 107 #ifdef HAVE_STRING_H
 108 # include <string.h>
 109 #else
 110 # ifdef HAVE_STRINGS_H
 111 #  include <strings.h>
 112 # endif
 113 #endif
 114
 115 #ifdef HAVE_STDLIB_H
 116 # include <stdlib.h>
 117 #endif
 118
 119 #ifdef HAVE_UNISTD_H
 120 # include <unistd.h>
 121 #endif
 122
 123 #ifdef HAVE_FCNTL_H
 124 # include <fcntl.h>
 125 #else
 126 # ifdef HAVE_SYS_FILE_H
 127 #  include <sys/file.h>
 128 # endif
 129 #endif
 130
 131 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1.  If they
 132    are defined to 0 then we must provide the relevant declaration
 133    here.  These checks will be in the undefined state while configure
 134    is running so be careful to test "defined (HAVE_DECL_*)".  */
 135
 136 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
 137 extern void abort (void);
 138 #endif
 139
 140 #if HAVE_SYS_STAT_H
 141 # include <sys/stat.h>
 142 #endif
 143
 144 /* Test if something is a normal file.  */
 145 #ifndef S_ISREG
 146 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 147 #endif
 148
 149 /* Filename handling macros.  */
 150 #include "filenames.h"
 151
 152 /* Get libiberty declarations.  */
 153 #include "libiberty.h"
 154 #include "safe-ctype.h"
 155
 156 #endif /* ! FIXINC_SYSTEM_H */