1 /* CPP Library. 2 Copyright (C) 1986-2022 Free Software Foundation, Inc. 3 Contributed by Per Bothner, 1994-95. 4 Based on CCCP program by Paul Rubin, June 1986 5 Adapted to ANSI C, Richard Stallman, Jan 1987 6 7 This program is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published by the 9 Free Software Foundation; either version 3, or (at your option) any 10 later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #include "config.h" 22 #include "system.h" 23 #include "coretypes.h" 24 #include "tm.h" 25 #include "cppdefault.h" 26 27 #ifndef NATIVE_SYSTEM_HEADER_COMPONENT 28 #define NATIVE_SYSTEM_HEADER_COMPONENT 0 29 #endif 30 31 #if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT) 32 # undef LOCAL_INCLUDE_DIR 33 # undef NATIVE_SYSTEM_HEADER_DIR 34 #else 35 # undef CROSS_INCLUDE_DIR 36 #endif 37 38 const struct default_include cpp_include_defaults[] 39 #ifdef INCLUDE_DEFAULTS 40 = INCLUDE_DEFAULTS; 41 #else 42 = { 43 #ifdef GPLUSPLUS_INCLUDE_DIR 44 /* Pick up GNU C++ generic include files. */ 45 { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, 46 GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, 47 #endif 48 #ifdef GPLUSPLUS_TOOL_INCLUDE_DIR 49 /* Pick up GNU C++ target-dependent include files. */ 50 { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, 51 GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, 52 #endif 53 #ifdef GPLUSPLUS_BACKWARD_INCLUDE_DIR 54 /* Pick up GNU C++ backward and deprecated include files. */ 55 { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, 56 GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, 57 #endif 58 #ifdef GPLUSPLUS_LIBCXX_INCLUDE_DIR 59 /* Pick up libc++ include files, if we have -stdlib=libc++. */ 60 { GPLUSPLUS_LIBCXX_INCLUDE_DIR, "G++", 2, 1, 61 GPLUSPLUS_LIBCXX_INCLUDE_DIR_ADD_SYSROOT, 0 }, 62 #endif 63 #ifdef GCC_INCLUDE_DIR 64 #ifndef GCC_INCLUDE_DIR_ADD_SYSROOT 65 #define GCC_INCLUDE_DIR_ADD_SYSROOT 0 66 #endif 67 /* This is the dir for gcc's private headers. */ 68 { GCC_INCLUDE_DIR, "GCC", 0, 0, 69 GCC_INCLUDE_DIR_ADD_SYSROOT, 0 }, 70 #endif 71 #ifdef LOCAL_INCLUDE_DIR 72 /* /usr/local/include comes before the fixincluded header files. */ 73 { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, 74 { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 }, 75 #endif 76 #ifdef PREFIX_INCLUDE_DIR 77 { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0 }, 78 #endif 79 #ifdef FIXED_INCLUDE_DIR 80 /* This is the dir for fixincludes. */ 81 { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0, 82 /* A multilib suffix needs adding if different multilibs use 83 different headers. */ 84 #ifdef SYSROOT_HEADERS_SUFFIX_SPEC 85 1 86 #else 87 0 88 #endif 89 }, 90 #endif 91 #ifdef CROSS_INCLUDE_DIR 92 /* One place the target system's headers might be. */ 93 { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0 }, 94 #endif 95 #ifdef TOOL_INCLUDE_DIR 96 /* Another place the target system's headers might be. */ 97 { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0 }, 98 #endif 99 #ifdef NATIVE_SYSTEM_HEADER_DIR 100 /* /usr/include comes dead last. */ 101 { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 }, 102 { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 }, 103 #endif 104 { 0, 0, 0, 0, 0, 0 } 105 }; 106 #endif /* no INCLUDE_DEFAULTS */ 107 108 #ifdef GCC_INCLUDE_DIR 109 const char cpp_GCC_INCLUDE_DIR[] = GCC_INCLUDE_DIR; 110 const size_t cpp_GCC_INCLUDE_DIR_len = sizeof GCC_INCLUDE_DIR - 8; 111 #else 112 const char cpp_GCC_INCLUDE_DIR[] = ""; 113 const size_t cpp_GCC_INCLUDE_DIR_len = 0; 114 #endif 115 116 /* The configured prefix. */ 117 const char cpp_PREFIX[] = PREFIX; 118 const size_t cpp_PREFIX_len = sizeof PREFIX - 1; 119 const char cpp_EXEC_PREFIX[] = STANDARD_EXEC_PREFIX; 120 121 /* This value is set by cpp_relocated at runtime */ 122 const char *gcc_exec_prefix; 123 124 /* Return true if the toolchain is relocated. */ 125 bool 126 cpp_relocated (void) 127 { 128 static int relocated = -1; 129 130 /* A relocated toolchain ignores standard include directories. */ 131 if (relocated == -1) 132 { 133 /* Check if the toolchain was relocated? */ 134 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX"); 135 if (gcc_exec_prefix) 136 relocated = 1; 137 else 138 relocated = 0; 139 } 140 141 return relocated; 142 } 143