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Diffstat (limited to '')
| -rw-r--r-- | lib/libc-config.h | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/lib/libc-config.h b/lib/libc-config.h new file mode 100644 index 0000000..5f5ad01 --- /dev/null +++ b/lib/libc-config.h @@ -0,0 +1,204 @@ +/* System definitions for code taken from the GNU C Library + + Copyright 2017-2023 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser 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. + + Note: This header file MUST NOT be included by public header files + of Gnulib. */ + +#include <config.h> + +/* On glibc this includes <features.h> and <sys/cdefs.h> and #defines + _FEATURES_H, __WORDSIZE, and __set_errno. On FreeBSD 11 and + DragonFlyBSD 5.9 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 + +#ifndef __attribute_nonnull__ +/* <sys/cdefs.h> either does not exist, or is too old for Gnulib. + Prepare to include <cdefs.h>, which is Gnulib's version of a + more-recent 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 __GNULIB_CDEFS so that <cdefs.h> does not attempt to include + nonexistent files. */ +# define __GNULIB_CDEFS +/* 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_REDIR2_DECL +# undef __LDBL_REDIR_DECL +# undef __LDBL_REDIR_NTH +# undef __LEAF +# undef __LEAF_ATTR +# undef __NTH +# undef __NTHNL +# undef __REDIRECT +# undef __REDIRECT_LDBL +# undef __REDIRECT_NTH +# undef __REDIRECT_NTHNL +# undef __REDIRECT_NTH_LDBL +# undef __STRING +# undef __THROW +# undef __THROWNL +# undef __attr_access +# undef __attr_access_none +# undef __attr_dealloc +# undef __attr_dealloc_free +# undef __attribute__ +# undef __attribute_alloc_align__ +# 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_maybe_unused__ +# undef __attribute_noinline__ +# undef __attribute_nonstring__ +# undef __attribute_pure__ +# undef __attribute_returns_twice__ +# undef __attribute_used__ +# undef __attribute_warn_unused_result__ +# undef __errordecl +# undef __extension__ +# undef __extern_always_inline +# undef __extern_inline +# undef __flexarr +# undef __fortified_attr_access +# undef __fortify_function +# undef __glibc_c99_flexarr_available +# undef __glibc_has_attribute +# undef __glibc_has_builtin +# undef __glibc_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 __wur +# ifndef __GNULIB_CDEFS +# undef __bos +# undef __bos0 +# undef __glibc_fortify +# undef __glibc_fortify_n +# undef __glibc_objsize +# undef __glibc_objsize0 +# undef __glibc_safe_len_cond +# undef __glibc_safe_or_unknown_len +# undef __glibc_unsafe_len +# undef __glibc_unsigned_or_positive +# endif + +/* 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 + +#endif /* defined __glibc_likely */ + + +/* 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 |