1 /* CPP Library.
2 Copyright (C) 1986-2020 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 #ifndef GCC_INCLUDE_DIR_ADD_SYSROOT
60 #define GCC_INCLUDE_DIR_ADD_SYSROOT 0
61 #endif
62 /* This is the dir for gcc's private headers. */
63 { GCC_INCLUDE_DIR, "GCC", 0, 0,
64 GCC_INCLUDE_DIR_ADD_SYSROOT, 0 },
65 #endif
66 #ifdef LOCAL_INCLUDE_DIR
67 /* /usr/local/include comes before the fixincluded header files. */
68 { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },
69 { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
70 #endif
71 #ifdef PREFIX_INCLUDE_DIR
72 { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0 },
73 #endif
74 #ifdef FIXED_INCLUDE_DIR
75 /* This is the dir for fixincludes. */
76 { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0,
77 /* A multilib suffix needs adding if different multilibs use
78 different headers. */
79 #ifdef SYSROOT_HEADERS_SUFFIX_SPEC
80 1
81 #else
82 0
83 #endif
84 },
85 #endif
86 #ifdef CROSS_INCLUDE_DIR
87 /* One place the target system's headers might be. */
88 { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
89 #endif
90 #ifdef TOOL_INCLUDE_DIR
91 /* Another place the target system's headers might be. */
92 { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0 },
93 #endif
94 #ifdef NATIVE_SYSTEM_HEADER_DIR
95 /* /usr/include comes dead last. */
96 { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 },
97 { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 },
98 #endif
99 { 0, 0, 0, 0, 0, 0 }
100 };
101 #endif /* no INCLUDE_DEFAULTS */
102
103 #ifdef GCC_INCLUDE_DIR
104 const char cpp_GCC_INCLUDE_DIR[] = GCC_INCLUDE_DIR;
105 const size_t cpp_GCC_INCLUDE_DIR_len = sizeof GCC_INCLUDE_DIR - 8;
106 #else
107 const char cpp_GCC_INCLUDE_DIR[] = "";
108 const size_t cpp_GCC_INCLUDE_DIR_len = 0;
109 #endif
110
111 /* The configured prefix. */
112 const char cpp_PREFIX[] = PREFIX;
113 const size_t cpp_PREFIX_len = sizeof PREFIX - 1;
114 const char cpp_EXEC_PREFIX[] = STANDARD_EXEC_PREFIX;
115
116 /* This value is set by cpp_relocated at runtime */
117 const char *gcc_exec_prefix;
118
119 /* Return true if the toolchain is relocated. */
120 bool
cpp_relocated(void)121 cpp_relocated (void)
122 {
123 static int relocated = -1;
124
125 /* A relocated toolchain ignores standard include directories. */
126 if (relocated == -1)
127 {
128 /* Check if the toolchain was relocated? */
129 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
130 if (gcc_exec_prefix)
131 relocated = 1;
132 else
133 relocated = 0;
134 }
135
136 return relocated;
137 }
138