gsasl  1.10.0
About: GNU SASL is an implementation of the Simple Authentication and Security Layer (SASL). Development version.
  Fossies Dox: gsasl-1.10.0.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

libc-config.h
Go to the documentation of this file.
1 /* System definitions for code taken from the GNU C Library
2 
3  Copyright 2017-2021 Free Software Foundation, Inc.
4 
5  This program is free software; you can redistribute it and/or
6  modify it under the terms of the GNU Lesser General Public
7  License as published by the Free Software Foundation; either
8  version 2.1 of the License, or (at your option) any later version.
9 
10  This program is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  Lesser General Public License for more details.
14 
15  You should have received a copy of the GNU Lesser General Public
16  License along with this program; if not, see
17  <https://www.gnu.org/licenses/>. */
18 
19 /* Written by Paul Eggert. */
20 
21 /* This is intended to be a good-enough substitute for glibc system
22  macros like those defined in <sys/cdefs.h>, so that Gnulib code
23  shared with glibc can do this as the first #include:
24 
25  #ifndef _LIBC
26  # include <libc-config.h>
27  #endif
28 
29  When compiled as part of glibc this is a no-op; when compiled as
30  part of Gnulib this includes Gnulib's <config.h> and defines macros
31  that glibc library code would normally assume. */
32 
33 #include <config.h>
34 
35 /* On glibc this includes <features.h> and <sys/cdefs.h> and #defines
36  _FEATURES_H, __WORDSIZE, and __set_errno. On FreeBSD 11 it
37  includes <sys/cdefs.h> which defines __nonnull. Elsewhere it
38  is harmless. */
39 #include <errno.h>
40 
41 /* From glibc <errno.h>. */
42 #ifndef __set_errno
43 # define __set_errno(val) (errno = (val))
44 #endif
45 
46 /* From glibc <features.h>. */
47 
48 #ifndef __GNUC_PREREQ
49 # if defined __GNUC__ && defined __GNUC_MINOR__
50 # define __GNUC_PREREQ(maj, min) ((maj) < __GNUC__ + ((min) <= __GNUC_MINOR__))
51 # else
52 # define __GNUC_PREREQ(maj, min) 0
53 # endif
54 #endif
55 
56 #ifndef __glibc_clang_prereq
57 # if defined __clang_major__ && defined __clang_minor__
58 # ifdef __apple_build_version__
59 /* Apple for some reason renumbers __clang_major__ and __clang_minor__.
60  Gnulib code uses only __glibc_clang_prereq (3, 5); map it to
61  6000000 <= __apple_build_version__. Support for other calls to
62  __glibc_clang_prereq can be added here as needed. */
63 # define __glibc_clang_prereq(maj, min) \
64  ((maj) == 3 && (min) == 5 ? 6000000 <= __apple_build_version__ : 0)
65 # else
66 # define __glibc_clang_prereq(maj, min) \
67  ((maj) < __clang_major__ + ((min) <= __clang_minor__))
68 # endif
69 # else
70 # define __glibc_clang_prereq(maj, min) 0
71 # endif
72 #endif
73 
74 
75 /* Prepare to include <cdefs.h>, which is our copy of glibc
76  <sys/cdefs.h>. */
77 
78 /* Define _FEATURES_H so that <cdefs.h> does not include <features.h>. */
79 #ifndef _FEATURES_H
80 # define _FEATURES_H 1
81 #endif
82 /* Define __WORDSIZE so that <cdefs.h> does not attempt to include
83  nonexistent files. Make it a syntax error, since Gnulib does not
84  use __WORDSIZE now, and if Gnulib uses it later the syntax error
85  will let us know that __WORDSIZE needs configuring. */
86 #ifndef __WORDSIZE
87 # define __WORDSIZE %%%
88 #endif
89 /* Undef the macros unconditionally defined by our copy of glibc
90  <sys/cdefs.h>, so that they do not clash with any system-defined
91  versions. */
92 #undef _SYS_CDEFS_H
93 #undef __ASMNAME
94 #undef __ASMNAME2
95 #undef __BEGIN_DECLS
96 #undef __CONCAT
97 #undef __END_DECLS
98 #undef __HAVE_GENERIC_SELECTION
99 #undef __LDBL_COMPAT
100 #undef __LDBL_REDIR
101 #undef __LDBL_REDIR1
102 #undef __LDBL_REDIR1_DECL
103 #undef __LDBL_REDIR1_NTH
104 #undef __LDBL_REDIR_DECL
105 #undef __LDBL_REDIR_NTH
106 #undef __LEAF
107 #undef __LEAF_ATTR
108 #undef __NTH
109 #undef __NTHNL
110 #undef __P
111 #undef __PMT
112 #undef __REDIRECT
113 #undef __REDIRECT_LDBL
114 #undef __REDIRECT_NTH
115 #undef __REDIRECT_NTHNL
116 #undef __REDIRECT_NTH_LDBL
117 #undef __STRING
118 #undef __THROW
119 #undef __THROWNL
120 #undef __always_inline
121 #undef __attribute__
122 #undef __attribute_alloc_size__
123 #undef __attribute_artificial__
124 #undef __attribute_const__
125 #undef __attribute_deprecated__
126 #undef __attribute_deprecated_msg__
127 #undef __attribute_format_arg__
128 #undef __attribute_format_strfmon__
129 #undef __attribute_malloc__
130 #undef __attribute_noinline__
131 #undef __attribute_nonstring__
132 #undef __attribute_pure__
133 #undef __attribute_used__
134 #undef __attribute_warn_unused_result__
135 #undef __bos
136 #undef __bos0
137 #undef __errordecl
138 #undef __extension__
139 #undef __extern_always_inline
140 #undef __extern_inline
141 #undef __flexarr
142 #undef __fortify_function
143 #undef __glibc_c99_flexarr_available
144 #undef __glibc_clang_has_extension
145 #undef __glibc_likely
146 #undef __glibc_macro_warning
147 #undef __glibc_macro_warning1
148 #undef __glibc_unlikely
149 #undef __inline
150 #undef __ptr_t
151 #undef __restrict
152 #undef __restrict_arr
153 #undef __va_arg_pack
154 #undef __va_arg_pack_len
155 #undef __warnattr
156 #undef __warndecl
157 
158 /* Include our copy of glibc <sys/cdefs.h>. */
159 #include <cdefs.h>
160 
161 /* <cdefs.h> __inline is too pessimistic for non-GCC. */
162 #undef __inline
163 #ifndef HAVE___INLINE
164 # if 199901 <= __STDC_VERSION__ || defined inline
165 # define __inline inline
166 # else
167 # define __inline
168 # endif
169 #endif
170 
171 
172 /* A substitute for glibc <libc-symbols.h>, good enough for Gnulib. */
173 #define attribute_hidden
174 #define libc_hidden_proto(name, ...)
175 #define libc_hidden_def(name)
176 #define libc_hidden_weak(name)
177 #define libc_hidden_ver(local, name)
178 #define strong_alias(name, aliasname)
179 #define weak_alias(name, aliasname)
180 
181 /* A substitute for glibc <shlib-compat.h>, good enough for Gnulib. */
182 #define SHLIB_COMPAT(lib, introduced, obsoleted) 0
183 #define compat_symbol(lib, local, symbol, version) extern int dummy
184 #define versioned_symbol(lib, local, symbol, version) extern int dummy