1 /* CPP Library. 2 Copyright (C) 1986-2018 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 GCC_INCLUDE_DIR 59 /* This is the dir for gcc's private headers. */ 60 { GCC_INCLUDE_DIR, "GCC", 0, 0, 0, 0 }, 61 #endif 62 #ifdef LOCAL_INCLUDE_DIR 63 /* /usr/local/include comes before the fixincluded header files. */ 64 { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, 65 { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 }, 66 #endif 67 #ifdef PREFIX_INCLUDE_DIR 68 { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0 }, 69 #endif 70 #ifdef FIXED_INCLUDE_DIR 71 /* This is the dir for fixincludes. */ 72 { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0, 73 /* A multilib suffix needs adding if different multilibs use 74 different headers. */ 75 #ifdef SYSROOT_HEADERS_SUFFIX_SPEC 76 1 77 #else 78 0 79 #endif 80 }, 81 #endif 82 #ifdef CROSS_INCLUDE_DIR 83 /* One place the target system's headers might be. */ 84 { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0 }, 85 #endif 86 #ifdef TOOL_INCLUDE_DIR 87 /* Another place the target system's headers might be. */ 88 { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0 }, 89 #endif 90 #ifdef NATIVE_SYSTEM_HEADER_DIR 91 /* /usr/include comes dead last. */ 92 { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 }, 93 { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 }, 94 #endif 95 { 0, 0, 0, 0, 0, 0 } 96 }; 97 #endif /* no INCLUDE_DEFAULTS */ 98 99 #ifdef GCC_INCLUDE_DIR 100 const char cpp_GCC_INCLUDE_DIR[] = GCC_INCLUDE_DIR; 101 const size_t cpp_GCC_INCLUDE_DIR_len = sizeof GCC_INCLUDE_DIR - 8; 102 #else 103 const char cpp_GCC_INCLUDE_DIR[] = ""; 104 const size_t cpp_GCC_INCLUDE_DIR_len = 0; 105 #endif 106 107 /* The configured prefix. */ 108 const char cpp_PREFIX[] = PREFIX; 109 const size_t cpp_PREFIX_len = sizeof PREFIX - 1; 110 const char cpp_EXEC_PREFIX[] = STANDARD_EXEC_PREFIX; 111 112 /* This value is set by cpp_relocated at runtime */ 113 const char *gcc_exec_prefix; 114 115 /* Return true if the toolchain is relocated. */ 116 bool 117 cpp_relocated (void) 118 { 119 static int relocated = -1; 120 121 /* A relocated toolchain ignores standard include directories. */ 122 if (relocated == -1) 123 { 124 /* Check if the toolchain was relocated? */ 125 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX"); 126 if (gcc_exec_prefix) 127 relocated = 1; 128 else 129 relocated = 0; 130 } 131 132 return relocated; 133 } 134