gcc/cppdefault.c

   1 /* CPP Library.
   2    Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   3    1999, 2000, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
   4    Contributed by Per Bothner, 1994-95.
   5    Based on CCCP program by Paul Rubin, June 1986
   6    Adapted to ANSI C, Richard Stallman, Jan 1987
   7
   8    This program is free software; you can redistribute it and/or modify it
   9    under the terms of the GNU General Public License as published by the
  10    Free Software Foundation; either version 3, or (at your option) any
  11    later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; see the file COPYING3.  If not see
  20    <http://www.gnu.org/licenses/>.  */
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "tm.h"
  26 #include "cppdefault.h"
  27
  28 #ifndef STANDARD_INCLUDE_DIR
  29 #define STANDARD_INCLUDE_DIR "/usr/include"
  30 #endif
  31
  32 #ifndef STANDARD_INCLUDE_COMPONENT
  33 #define STANDARD_INCLUDE_COMPONENT 0
  34 #endif
  35
  36 #if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
  37 # undef LOCAL_INCLUDE_DIR
  38 # undef SYSTEM_INCLUDE_DIR
  39 # undef STANDARD_INCLUDE_DIR
  40 #else
  41 # undef CROSS_INCLUDE_DIR
  42 #endif
  43
  44 const struct default_include cpp_include_defaults[]
  45 #ifdef INCLUDE_DEFAULTS
  46 = INCLUDE_DEFAULTS;
  47 #else
  48 = {
  49 #ifdef GPLUSPLUS_INCLUDE_DIR
  50     /* Pick up GNU C++ generic include files.  */
  51     { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, 0, 0 },
  52 #endif
  53 #ifdef GPLUSPLUS_TOOL_INCLUDE_DIR
  54     /* Pick up GNU C++ target-dependent include files.  */
  55     { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, 0, 1 },
  56 #endif
  57 #ifdef GPLUSPLUS_BACKWARD_INCLUDE_DIR
  58     /* Pick up GNU C++ backward and deprecated include files.  */
  59     { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, 0, 0 },
  60 #endif
  61 #ifdef LOCAL_INCLUDE_DIR
  62     /* /usr/local/include comes before the fixincluded header files.  */
  63     { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
  64 #endif
  65 #ifdef PREFIX_INCLUDE_DIR
  66     { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0 },
  67 #endif
  68 #ifdef GCC_INCLUDE_DIR
  69     /* This is the dir for gcc's private headers.  */
  70     { GCC_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
  71 #endif
  72 #ifdef FIXED_INCLUDE_DIR
  73     /* This is the dir for fixincludes.  */
  74     { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0,
  75       /* A multilib suffix needs adding if different multilibs use
  76          different headers.  */
  77 #ifdef SYSROOT_HEADERS_SUFFIX_SPEC
  78       1
  79 #else
  80       0
  81 #endif
  82     },
  83 #endif
  84 #ifdef CROSS_INCLUDE_DIR
  85     /* One place the target system's headers might be.  */
  86     { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
  87 #endif
  88 #ifdef TOOL_INCLUDE_DIR
  89     /* Another place the target system's headers might be.  */
  90     { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0 },
  91 #endif
  92 #ifdef SYSTEM_INCLUDE_DIR
  93     /* Some systems have an extra dir of include files.  */
  94     { SYSTEM_INCLUDE_DIR, 0, 0, 0, 1, 0 },
  95 #endif
  96 #ifdef STANDARD_INCLUDE_DIR
  97     /* /usr/include comes dead last.  */
  98     { STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_COMPONENT, 0, 0, 1, 0 },
  99 #endif
 100     { 0, 0, 0, 0, 0, 0 }
 101   };
 102 #endif /* no INCLUDE_DEFAULTS */
 103
 104 #ifdef GCC_INCLUDE_DIR
 105 const char cpp_GCC_INCLUDE_DIR[] = GCC_INCLUDE_DIR;
 106 const size_t cpp_GCC_INCLUDE_DIR_len = sizeof GCC_INCLUDE_DIR - 8;
 107 #else
 108 const char cpp_GCC_INCLUDE_DIR[] = "";
 109 const size_t cpp_GCC_INCLUDE_DIR_len = 0;
 110 #endif
 111
 112 /* The configured prefix.  */
 113 const char cpp_PREFIX[] = PREFIX;
 114 const size_t cpp_PREFIX_len = sizeof PREFIX - 1;
 115 const char cpp_EXEC_PREFIX[] = STANDARD_EXEC_PREFIX;
 116
 117 /* This value is set by cpp_relocated at runtime */
 118 const char *gcc_exec_prefix;
 119
 120 /* Return true if the toolchain is relocated.  */
 121 bool
 122 cpp_relocated (void)
 123 {
 124   static int relocated = -1;
 125
 126   /* A relocated toolchain ignores standard include directories.  */
 127   if (relocated == -1)
 128     {
 129       /* Check if the toolchain was relocated?  */
 130       GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
 131       if (gcc_exec_prefix)
 132        relocated = 1;
 133       else
 134        relocated = 0;
 135     }
 136
 137   return relocated;
 138 }
 139