Line data Source code
1 : /* CPP Library.
2 : Copyright (C) 1986-2026 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 : /* This is the dir for gcc's private headers. */
65 : { GCC_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
66 : #endif
67 : #ifdef LOCAL_INCLUDE_DIR
68 : /* /usr/local/include comes before the fixincluded header files. */
69 : { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },
70 : { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
71 : #endif
72 : #ifdef PREFIX_INCLUDE_DIR
73 : { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0 },
74 : #endif
75 : #ifdef FIXED_INCLUDE_DIR
76 : /* This is the dir for fixincludes. */
77 : #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
78 : { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0, 2 },
79 : #endif
80 : { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0,
81 : /* A multilib suffix needs adding if different multilibs use
82 : different headers. */
83 : #ifdef SYSROOT_HEADERS_SUFFIX_SPEC
84 : 1
85 : #else
86 : 0
87 : #endif
88 : },
89 : #endif
90 : #ifdef CROSS_INCLUDE_DIR
91 : /* One place the target system's headers might be. */
92 : { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
93 : #endif
94 : #ifdef TOOL_INCLUDE_DIR
95 : /* Another place the target system's headers might be. */
96 : { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0 },
97 : #endif
98 : #ifdef NATIVE_SYSTEM_HEADER_DIR
99 : /* /usr/include comes dead last. */
100 : { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 },
101 : { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 },
102 : #endif
103 : { 0, 0, 0, 0, 0, 0 }
104 : };
105 : #endif /* no INCLUDE_DEFAULTS */
106 :
107 : #ifdef GCC_INCLUDE_DIR
108 : const char cpp_GCC_INCLUDE_DIR[] = GCC_INCLUDE_DIR;
109 : const size_t cpp_GCC_INCLUDE_DIR_len = sizeof GCC_INCLUDE_DIR - 8;
110 : #else
111 : const char cpp_GCC_INCLUDE_DIR[] = "";
112 : const size_t cpp_GCC_INCLUDE_DIR_len = 0;
113 : #endif
114 :
115 : /* The configured prefix. */
116 : const char cpp_PREFIX[] = PREFIX;
117 : const size_t cpp_PREFIX_len = sizeof PREFIX - 1;
118 : const char cpp_EXEC_PREFIX[] = STANDARD_EXEC_PREFIX;
119 :
120 : /* This value is set by cpp_relocated at runtime */
121 : const char *gcc_exec_prefix;
122 :
123 : /* Return true if the toolchain is relocated. */
124 : bool
125 208948 : cpp_relocated (void)
126 : {
127 208948 : static int relocated = -1;
128 :
129 : /* A relocated toolchain ignores standard include directories. */
130 208948 : if (relocated == -1)
131 : {
132 : /* Check if the toolchain was relocated? */
133 208948 : gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
134 208948 : if (gcc_exec_prefix)
135 208948 : relocated = 1;
136 : else
137 0 : relocated = 0;
138 : }
139 :
140 208948 : return relocated;
141 : }
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