65500ce76343ec8cc677526e50588bd78801dfa7
[deliverable/binutils-gdb.git] / gdbsupport / common-defs.h
1 /* Common definitions.
2
3 Copyright (C) 1986-2020 Free Software Foundation, Inc.
4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any 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. If not, see <http://www.gnu.org/licenses/>. */
19
20 #ifndef COMMON_COMMON_DEFS_H
21 #define COMMON_COMMON_DEFS_H
22
23 #include <gdbsupport/config.h>
24
25 #undef PACKAGE_NAME
26 #undef PACKAGE
27 #undef PACKAGE_VERSION
28 #undef PACKAGE_STRING
29 #undef PACKAGE_TARNAME
30
31 #include "gnulib/config.h"
32
33 /* From:
34 https://www.gnu.org/software/gnulib/manual/html_node/stdint_002eh.html
35
36 "On some hosts that predate C++11, when using C++ one must define
37 __STDC_CONSTANT_MACROS to make visible the definitions of constant
38 macros such as INTMAX_C, and one must define __STDC_LIMIT_MACROS to
39 make visible the definitions of limit macros such as INTMAX_MAX.".
40
41 And:
42 https://www.gnu.org/software/gnulib/manual/html_node/inttypes_002eh.html
43
44 "On some hosts that predate C++11, when using C++ one must define
45 __STDC_FORMAT_MACROS to make visible the declarations of format
46 macros such as PRIdMAX."
47
48 Must do this before including any system header, since other system
49 headers may include stdint.h/inttypes.h. */
50 #define __STDC_CONSTANT_MACROS 1
51 #define __STDC_LIMIT_MACROS 1
52 #define __STDC_FORMAT_MACROS 1
53
54 /* Some distros enable _FORTIFY_SOURCE by default, which on occasion
55 has caused build failures with -Wunused-result when a patch is
56 developed on a distro that does not enable _FORTIFY_SOURCE. We
57 enable it here in order to try to catch these problems earlier;
58 plus this seems like a reasonable safety measure. The check for
59 optimization is required because _FORTIFY_SOURCE only works when
60 optimization is enabled. If _FORTIFY_SOURCE is already defined,
61 then we don't do anything. Also, on MinGW, fortify requires
62 linking to -lssp, and to avoid the hassle of checking for
63 that and linking to it statically, we just don't define
64 _FORTIFY_SOURCE there. */
65
66 #if (!defined _FORTIFY_SOURCE && defined __OPTIMIZE__ && __OPTIMIZE__ > 0 \
67 && !defined(__MINGW32__))
68 #define _FORTIFY_SOURCE 2
69 #endif
70
71 /* We don't support Windows versions before XP, so we define
72 _WIN32_WINNT correspondingly to ensure the Windows API headers
73 expose the required symbols. */
74 #if defined (__MINGW32__) || defined (__CYGWIN__)
75 # ifdef _WIN32_WINNT
76 # if _WIN32_WINNT < 0x0501
77 # undef _WIN32_WINNT
78 # define _WIN32_WINNT 0x0501
79 # endif
80 # else
81 # define _WIN32_WINNT 0x0501
82 # endif
83 #endif /* __MINGW32__ || __CYGWIN__ */
84
85 #include <stdarg.h>
86 #include <stdio.h>
87 #include <stdlib.h>
88 #include <stddef.h>
89 #include <stdint.h>
90 #include <string.h>
91 #ifdef HAVE_STRINGS_H
92 #include <strings.h> /* for strcasecmp and strncasecmp */
93 #endif
94 #include <errno.h>
95 #include <alloca.h>
96
97 #include "ansidecl.h"
98 /* This is defined by ansidecl.h, but we prefer gnulib's version. On
99 MinGW, gnulib might enable __USE_MINGW_ANSI_STDIO, which may or not
100 require use of attribute gnu_printf instead of printf. gnulib
101 checks that at configure time. Since _GL_ATTRIBUTE_FORMAT_PRINTF
102 is compatible with ATTRIBUTE_PRINTF, simply use it. */
103 #undef ATTRIBUTE_PRINTF
104 #define ATTRIBUTE_PRINTF _GL_ATTRIBUTE_FORMAT_PRINTF
105
106 #if GCC_VERSION >= 3004
107 #define ATTRIBUTE_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
108 #else
109 #define ATTRIBUTE_UNUSED_RESULT
110 #endif
111
112 #include "libiberty.h"
113 #include "pathmax.h"
114 #include "gdb/signals.h"
115 #include "gdb_locale.h"
116 #include "ptid.h"
117 #include "common-types.h"
118 #include "common-utils.h"
119 #include "gdb_assert.h"
120 #include "errors.h"
121 #include "print-utils.h"
122 #include "common-debug.h"
123 #include "cleanups.h"
124 #include "common-exceptions.h"
125 #include "gdbsupport/poison.h"
126
127 #define EXTERN_C extern "C"
128 #define EXTERN_C_PUSH extern "C" {
129 #define EXTERN_C_POP }
130
131 /* Pull in gdb::unique_xmalloc_ptr. */
132 #include "gdbsupport/gdb_unique_ptr.h"
133
134 /* String containing the current directory (what getwd would return). */
135 extern char *current_directory;
136
137 /* sbrk on macOS is not useful for our purposes, since sbrk(0) always
138 returns the same value. brk/sbrk on macOS is just an emulation
139 that always returns a pointer to a 4MB section reserved for
140 that. */
141
142 #if defined (HAVE_SBRK) && !__APPLE__
143 #define HAVE_USEFUL_SBRK 1
144 #endif
145
146 #endif /* COMMON_COMMON_DEFS_H */
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