1 files changed, 174 insertions, 0 deletions

diff --git a/lib/libc-config.h b/lib/libc-config.h
new file mode 100644
index 00000000000..d7b40935cd4
--- /dev/null
+++ b/lib/libc-config.h
@@ -0,0 +1,174 @@
+/* System definitions for code taken from the GNU C Library
+
+   Copyright 2017-2018 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__
+#  define __glibc_clang_prereq(maj, min) \
+     ((maj) < __clang_major__ + ((min) <= __clang_minor__))
+# 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 versioned_symbol(lib, local, symbol, version)