1/* CPP Library.
2 Copyright (C) 1986-2017 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
38const 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
100const char cpp_GCC_INCLUDE_DIR[] = GCC_INCLUDE_DIR;
101const size_t cpp_GCC_INCLUDE_DIR_len = sizeof GCC_INCLUDE_DIR - 8;
102#else
103const char cpp_GCC_INCLUDE_DIR[] = "";
104const size_t cpp_GCC_INCLUDE_DIR_len = 0;
105#endif
106
107/* The configured prefix. */
108const char cpp_PREFIX[] = PREFIX;
109const size_t cpp_PREFIX_len = sizeof PREFIX - 1;
110const char cpp_EXEC_PREFIX[] = STANDARD_EXEC_PREFIX;
111
112/* This value is set by cpp_relocated at runtime */
113const char *gcc_exec_prefix;
114
115/* Return true if the toolchain is relocated. */
116bool
117cpp_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