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1 | /* System definitions for code taken from the GNU C Library |
2 | ||
3 | Copyright 2017-2019 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 General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 3 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 | General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU 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 | # define __glibc_clang_prereq(maj, min) \ | |
59 | ((maj) < __clang_major__ + ((min) <= __clang_minor__)) | |
60 | # else | |
61 | # define __glibc_clang_prereq(maj, min) 0 | |
62 | # endif | |
63 | #endif | |
64 | ||
65 | ||
66 | /* Prepare to include <cdefs.h>, which is our copy of glibc | |
67 | <sys/cdefs.h>. */ | |
68 | ||
69 | /* Define _FEATURES_H so that <cdefs.h> does not include <features.h>. */ | |
70 | #ifndef _FEATURES_H | |
71 | # define _FEATURES_H 1 | |
72 | #endif | |
73 | /* Define __WORDSIZE so that <cdefs.h> does not attempt to include | |
74 | nonexistent files. Make it a syntax error, since Gnulib does not | |
75 | use __WORDSIZE now, and if Gnulib uses it later the syntax error | |
76 | will let us know that __WORDSIZE needs configuring. */ | |
77 | #ifndef __WORDSIZE | |
78 | # define __WORDSIZE %%% | |
79 | #endif | |
80 | /* Undef the macros unconditionally defined by our copy of glibc | |
81 | <sys/cdefs.h>, so that they do not clash with any system-defined | |
82 | versions. */ | |
83 | #undef _SYS_CDEFS_H | |
84 | #undef __ASMNAME | |
85 | #undef __ASMNAME2 | |
86 | #undef __BEGIN_DECLS | |
87 | #undef __CONCAT | |
88 | #undef __END_DECLS | |
89 | #undef __HAVE_GENERIC_SELECTION | |
90 | #undef __LDBL_COMPAT | |
91 | #undef __LDBL_REDIR | |
92 | #undef __LDBL_REDIR1 | |
93 | #undef __LDBL_REDIR1_DECL | |
94 | #undef __LDBL_REDIR1_NTH | |
95 | #undef __LDBL_REDIR_DECL | |
96 | #undef __LDBL_REDIR_NTH | |
97 | #undef __LEAF | |
98 | #undef __LEAF_ATTR | |
99 | #undef __NTH | |
100 | #undef __NTHNL | |
101 | #undef __P | |
102 | #undef __PMT | |
103 | #undef __REDIRECT | |
104 | #undef __REDIRECT_LDBL | |
105 | #undef __REDIRECT_NTH | |
106 | #undef __REDIRECT_NTHNL | |
107 | #undef __REDIRECT_NTH_LDBL | |
108 | #undef __STRING | |
109 | #undef __THROW | |
110 | #undef __THROWNL | |
111 | #undef __always_inline | |
112 | #undef __attribute__ | |
113 | #undef __attribute_alloc_size__ | |
114 | #undef __attribute_artificial__ | |
115 | #undef __attribute_const__ | |
116 | #undef __attribute_deprecated__ | |
117 | #undef __attribute_deprecated_msg__ | |
118 | #undef __attribute_format_arg__ | |
119 | #undef __attribute_format_strfmon__ | |
120 | #undef __attribute_malloc__ | |
121 | #undef __attribute_noinline__ | |
122 | #undef __attribute_nonstring__ | |
123 | #undef __attribute_pure__ | |
124 | #undef __attribute_used__ | |
125 | #undef __attribute_warn_unused_result__ | |
126 | #undef __bos | |
127 | #undef __bos0 | |
128 | #undef __errordecl | |
129 | #undef __extension__ | |
130 | #undef __extern_always_inline | |
131 | #undef __extern_inline | |
132 | #undef __flexarr | |
133 | #undef __fortify_function | |
134 | #undef __glibc_c99_flexarr_available | |
135 | #undef __glibc_clang_has_extension | |
136 | #undef __glibc_likely | |
137 | #undef __glibc_macro_warning | |
138 | #undef __glibc_macro_warning1 | |
139 | #undef __glibc_unlikely | |
140 | #undef __inline | |
141 | #undef __ptr_t | |
142 | #undef __restrict | |
143 | #undef __restrict_arr | |
144 | #undef __va_arg_pack | |
145 | #undef __va_arg_pack_len | |
146 | #undef __warnattr | |
147 | #undef __warndecl | |
148 | ||
149 | /* Include our copy of glibc <sys/cdefs.h>. */ | |
150 | #include <cdefs.h> | |
151 | ||
152 | /* <cdefs.h> __inline is too pessimistic for non-GCC. */ | |
153 | #undef __inline | |
154 | #ifndef HAVE___INLINE | |
155 | # if 199901 <= __STDC_VERSION__ || defined inline | |
156 | # define __inline inline | |
157 | # else | |
158 | # define __inline | |
159 | # endif | |
160 | #endif | |
161 | ||
162 | ||
163 | /* A substitute for glibc <libc-symbols.h>, good enough for Gnulib. */ | |
164 | #define attribute_hidden | |
165 | #define libc_hidden_proto(name, ...) | |
166 | #define libc_hidden_def(name) | |
167 | #define libc_hidden_weak(name) | |
168 | #define libc_hidden_ver(local, name) | |
169 | #define strong_alias(name, aliasname) | |
170 | #define weak_alias(name, aliasname) | |
171 | ||
172 | /* A substitute for glibc <shlib-compat.h>, good enough for Gnulib. */ | |
173 | #define SHLIB_COMPAT(lib, introduced, obsoleted) 0 | |
174 | #define versioned_symbol(lib, local, symbol, version) |