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