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 44const 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 105const char cpp_GCC_INCLUDE_DIR[] = GCC_INCLUDE_DIR; 106const size_t cpp_GCC_INCLUDE_DIR_len = sizeof GCC_INCLUDE_DIR - 8; 107#else 108const char cpp_GCC_INCLUDE_DIR[] = ""; 109const size_t cpp_GCC_INCLUDE_DIR_len = 0; 110#endif 111 112/* The configured prefix. */ 113const char cpp_PREFIX[] = PREFIX; 114const size_t cpp_PREFIX_len = sizeof PREFIX - 1; 115const char cpp_EXEC_PREFIX[] = STANDARD_EXEC_PREFIX; 116 117/* This value is set by cpp_relocated at runtime */ 118const char *gcc_exec_prefix; 119 120/* Return true if the toolchain is relocated. */ 121bool 122cpp_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} 139 140