1 /* CPP Library. 2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 3 1999, 2000, 2003, 2004, 2006, 2007, 2010, 2011 4 Free Software Foundation, Inc. 5 Contributed by Per Bothner, 1994-95. 6 Based on CCCP program by Paul Rubin, June 1986 7 Adapted to ANSI C, Richard Stallman, Jan 1987 8 9 This program is free software; you can redistribute it and/or modify it 10 under the terms of the GNU General Public License as published by the 11 Free Software Foundation; either version 3, or (at your option) any 12 later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; see the file COPYING3. If not see 21 <http://www.gnu.org/licenses/>. */ 22 23 #include "config.h" 24 #include "system.h" 25 #include "coretypes.h" 26 #include "tm.h" 27 #include "cppdefault.h" 28 29 #ifndef NATIVE_SYSTEM_HEADER_COMPONENT 30 #define NATIVE_SYSTEM_HEADER_COMPONENT 0 31 #endif 32 33 #if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT) 34 # undef LOCAL_INCLUDE_DIR 35 # undef NATIVE_SYSTEM_HEADER_DIR 36 #else 37 # undef CROSS_INCLUDE_DIR 38 #endif 39 40 const struct default_include cpp_include_defaults[] 41 #ifdef INCLUDE_DEFAULTS 42 = INCLUDE_DEFAULTS; 43 #else 44 = { 45 #ifdef GPLUSPLUS_INCLUDE_DIR 46 /* Pick up GNU C++ generic include files. */ 47 { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, 48 GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, 49 #endif 50 #ifdef GPLUSPLUS_TOOL_INCLUDE_DIR 51 /* Pick up GNU C++ target-dependent include files. */ 52 { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, 53 GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, 54 #endif 55 #ifdef GPLUSPLUS_BACKWARD_INCLUDE_DIR 56 /* Pick up GNU C++ backward and deprecated include files. */ 57 { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, 58 GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, 59 #endif 60 #ifdef GCC_INCLUDE_DIR 61 /* This is the dir for gcc's private headers. */ 62 { GCC_INCLUDE_DIR, "GCC", 0, 0, 0, 0 }, 63 #endif 64 #ifdef LOCAL_INCLUDE_DIR 65 /* /usr/local/include comes before the fixincluded header files. */ 66 { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, 67 { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 }, 68 #endif 69 #ifdef PREFIX_INCLUDE_DIR 70 { PREFIX_INCLUDE_DIR, 0, 0, 1, 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 NATIVE_SYSTEM_HEADER_DIR 93 /* /usr/include comes dead last. */ 94 { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 }, 95 { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 }, 96 #endif 97 { 0, 0, 0, 0, 0, 0 } 98 }; 99 #endif /* no INCLUDE_DEFAULTS */ 100 101 #ifdef GCC_INCLUDE_DIR 102 const char cpp_GCC_INCLUDE_DIR[] = GCC_INCLUDE_DIR; 103 const size_t cpp_GCC_INCLUDE_DIR_len = sizeof GCC_INCLUDE_DIR - 8; 104 #else 105 const char cpp_GCC_INCLUDE_DIR[] = ""; 106 const size_t cpp_GCC_INCLUDE_DIR_len = 0; 107 #endif 108 109 /* The configured prefix. */ 110 const char cpp_PREFIX[] = PREFIX; 111 const size_t cpp_PREFIX_len = sizeof PREFIX - 1; 112 const char cpp_EXEC_PREFIX[] = STANDARD_EXEC_PREFIX; 113 114 /* This value is set by cpp_relocated at runtime */ 115 const char *gcc_exec_prefix; 116 117 /* Return true if the toolchain is relocated. */ 118 bool 119 cpp_relocated (void) 120 { 121 static int relocated = -1; 122 123 /* A relocated toolchain ignores standard include directories. */ 124 if (relocated == -1) 125 { 126 /* Check if the toolchain was relocated? */ 127 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX"); 128 if (gcc_exec_prefix) 129 relocated = 1; 130 else 131 relocated = 0; 132 } 133 134 return relocated; 135 } 136