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Diffstat (limited to 'lib/libc-config.h')
| -rw-r--r-- | lib/libc-config.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/lib/libc-config.h b/lib/libc-config.h new file mode 100644 index 0000000..1300c3a --- /dev/null +++ b/lib/libc-config.h @@ -0,0 +1,184 @@ +/* System definitions for code taken from the GNU C Library + + Copyright 2017-2020 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public + License as published by the Free Software Foundation; either + version 3 of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public + License along with this program; if not, see + <https://www.gnu.org/licenses/>. */ + +/* Written by Paul Eggert. */ + +/* This is intended to be a good-enough substitute for glibc system + macros like those defined in <sys/cdefs.h>, so that Gnulib code + shared with glibc can do this as the first #include: + + #ifndef _LIBC + # include <libc-config.h> + #endif + + When compiled as part of glibc this is a no-op; when compiled as + part of Gnulib this includes Gnulib's <config.h> and defines macros + that glibc library code would normally assume. */ + +#include <config.h> + +/* On glibc this includes <features.h> and <sys/cdefs.h> and #defines + _FEATURES_H, __WORDSIZE, and __set_errno. On FreeBSD 11 it + includes <sys/cdefs.h> which defines __nonnull. Elsewhere it + is harmless. */ +#include <errno.h> + +/* From glibc <errno.h>. */ +#ifndef __set_errno +# define __set_errno(val) (errno = (val)) +#endif + +/* From glibc <features.h>. */ + +#ifndef __GNUC_PREREQ +# if defined __GNUC__ && defined __GNUC_MINOR__ +# define __GNUC_PREREQ(maj, min) ((maj) < __GNUC__ + ((min) <= __GNUC_MINOR__)) +# else +# define __GNUC_PREREQ(maj, min) 0 +# endif +#endif + +#ifndef __glibc_clang_prereq +# if defined __clang_major__ && defined __clang_minor__ +# ifdef __apple_build_version__ +/* Apple for some reason renumbers __clang_major__ and __clang_minor__. + Gnulib code uses only __glibc_clang_prereq (3, 5); map it to + 6000000 <= __apple_build_version__. Support for other calls to + __glibc_clang_prereq can be added here as needed. */ +# define __glibc_clang_prereq(maj, min) \ + ((maj) == 3 && (min) == 5 ? 6000000 <= __apple_build_version__ : 0) +# else +# define __glibc_clang_prereq(maj, min) \ + ((maj) < __clang_major__ + ((min) <= __clang_minor__)) +# endif +# else +# define __glibc_clang_prereq(maj, min) 0 +# endif +#endif + + +/* Prepare to include <cdefs.h>, which is our copy of glibc + <sys/cdefs.h>. */ + +/* Define _FEATURES_H so that <cdefs.h> does not include <features.h>. */ +#ifndef _FEATURES_H +# define _FEATURES_H 1 +#endif +/* Define __WORDSIZE so that <cdefs.h> does not attempt to include + nonexistent files. Make it a syntax error, since Gnulib does not + use __WORDSIZE now, and if Gnulib uses it later the syntax error + will let us know that __WORDSIZE needs configuring. */ +#ifndef __WORDSIZE +# define __WORDSIZE %%% +#endif +/* Undef the macros unconditionally defined by our copy of glibc + <sys/cdefs.h>, so that they do not clash with any system-defined + versions. */ +#undef _SYS_CDEFS_H +#undef __ASMNAME +#undef __ASMNAME2 +#undef __BEGIN_DECLS +#undef __CONCAT +#undef __END_DECLS +#undef __HAVE_GENERIC_SELECTION +#undef __LDBL_COMPAT +#undef __LDBL_REDIR +#undef __LDBL_REDIR1 +#undef __LDBL_REDIR1_DECL +#undef __LDBL_REDIR1_NTH +#undef __LDBL_REDIR_DECL +#undef __LDBL_REDIR_NTH +#undef __LEAF +#undef __LEAF_ATTR +#undef __NTH +#undef __NTHNL +#undef __P +#undef __PMT +#undef __REDIRECT +#undef __REDIRECT_LDBL +#undef __REDIRECT_NTH +#undef __REDIRECT_NTHNL +#undef __REDIRECT_NTH_LDBL +#undef __STRING +#undef __THROW +#undef __THROWNL +#undef __always_inline +#undef __attribute__ +#undef __attribute_alloc_size__ +#undef __attribute_artificial__ +#undef __attribute_const__ +#undef __attribute_deprecated__ +#undef __attribute_deprecated_msg__ +#undef __attribute_format_arg__ +#undef __attribute_format_strfmon__ +#undef __attribute_malloc__ +#undef __attribute_noinline__ +#undef __attribute_nonstring__ +#undef __attribute_pure__ +#undef __attribute_used__ +#undef __attribute_warn_unused_result__ +#undef __bos +#undef __bos0 +#undef __errordecl +#undef __extension__ +#undef __extern_always_inline +#undef __extern_inline +#undef __flexarr +#undef __fortify_function +#undef __glibc_c99_flexarr_available +#undef __glibc_clang_has_extension +#undef __glibc_likely +#undef __glibc_macro_warning +#undef __glibc_macro_warning1 +#undef __glibc_unlikely +#undef __inline +#undef __ptr_t +#undef __restrict +#undef __restrict_arr +#undef __va_arg_pack +#undef __va_arg_pack_len +#undef __warnattr +#undef __warndecl + +/* Include our copy of glibc <sys/cdefs.h>. */ +#include <cdefs.h> + +/* <cdefs.h> __inline is too pessimistic for non-GCC. */ +#undef __inline +#ifndef HAVE___INLINE +# if 199901 <= __STDC_VERSION__ || defined inline +# define __inline inline +# else +# define __inline +# endif +#endif + + +/* A substitute for glibc <libc-symbols.h>, good enough for Gnulib. */ +#define attribute_hidden +#define libc_hidden_proto(name, ...) +#define libc_hidden_def(name) +#define libc_hidden_weak(name) +#define libc_hidden_ver(local, name) +#define strong_alias(name, aliasname) +#define weak_alias(name, aliasname) + +/* A substitute for glibc <shlib-compat.h>, good enough for Gnulib. */ +#define SHLIB_COMPAT(lib, introduced, obsoleted) 0 +#define compat_symbol(lib, local, symbol, version) extern int dummy +#define versioned_symbol(lib, local, symbol, version) extern int dummy |