1 /* CPP Library.
2 Copyright (C) 1986-2021 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 { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0,
78 /* A multilib suffix needs adding if different multilibs use
79 different headers. */
80 #ifdef SYSROOT_HEADERS_SUFFIX_SPEC
81 1
82 #else
83 0
84 #endif
85 },
86 #endif
87 #ifdef CROSS_INCLUDE_DIR
88 /* One place the target system's headers might be. */
89 { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
90 #endif
91 #ifdef TOOL_INCLUDE_DIR
92 /* Another place the target system's headers might be. */
93 { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0 },
94 #endif
95 #ifdef NATIVE_SYSTEM_HEADER_DIR
96 /* /usr/include comes dead last. */
97 { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 },
98 { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_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
105 const char cpp_GCC_INCLUDE_DIR[] = GCC_INCLUDE_DIR;
106 const size_t cpp_GCC_INCLUDE_DIR_len = sizeof GCC_INCLUDE_DIR - 8;
107 #else
108 const char cpp_GCC_INCLUDE_DIR[] = "";
109 const size_t cpp_GCC_INCLUDE_DIR_len = 0;
110 #endif
111
112 /* The configured prefix. */
113 const char cpp_PREFIX[] = PREFIX;
114 const size_t cpp_PREFIX_len = sizeof PREFIX - 1;
115 const char cpp_EXEC_PREFIX[] = STANDARD_EXEC_PREFIX;
116
117 /* This value is set by cpp_relocated at runtime */
118 const char *gcc_exec_prefix;
119
120 /* Return true if the toolchain is relocated. */
121 bool
cpp_relocated(void)122 cpp_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 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
131 if (gcc_exec_prefix)
132 relocated = 1;
133 else
134 relocated = 0;
135 }
136
137 return relocated;
138 }
139