Split out libc-symbols.h from libc-internal.h, use it directly in CFLAGS. Moved weak[_const]_function into proper place (if we have weak support), else noop. Modified comment about changes to glibc. Moved -D_LIBC from CFLAGS to libc-symbols.h. I am not sure about unlikely/likely/__cast

1 files changed, 658 insertions, 0 deletions

diff --git a/include/libc-symbols.h b/include/libc-symbols.h
new file mode 100644
index 000000000..45b7a084b
--- /dev/null
+++ b/include/libc-symbols.h
@@ -0,0 +1,658 @@
+/* Copyright (C) 1991,92,93,95,96,97,98,99,2000,2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library 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.
+
+   The GNU C Library 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 the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _LIBC_SYMBOLS_H
+#define _LIBC_SYMBOLS_H 1
+
+#include <bits/uClibc_arch_features.h>
+
+#define _LIBC 1
+
+/* Enable declarations of GNU extensions, since we are compiling them.  */
+/* #define _GNU_SOURCE 1 */
+
+/* Prepare for the case that `__builtin_expect' is not available.  */
+#if __GNUC__ == 2 && __GNUC_MINOR__ < 96
+# define __builtin_expect(x, expected_value) (x)
+#endif
+#ifndef likely
+# define likely(x)	__builtin_expect((!!(x)),1)
+#endif
+#ifndef unlikely
+# define unlikely(x)	__builtin_expect((!!(x)),0)
+#endif
+#ifndef __LINUX_COMPILER_H
+# define __LINUX_COMPILER_H
+#endif
+#ifndef __cast__
+# define __cast__(_to)
+#endif
+
+#define attribute_unused __attribute__ ((unused))
+
+#ifdef __GNUC__
+# define attribute_noreturn __attribute__ ((__noreturn__))
+#else
+# define attribute_noreturn
+#endif
+
+#ifndef NOT_IN_libc
+# define IS_IN_libc 1
+#endif
+
+/* need this to unset defaults in libpthread for files that get added to libc */
+#ifdef IS_IN_libc
+# undef NOT_IN_libc
+#endif
+
+#ifdef __UCLIBC_NO_UNDERSCORES__
+# define NO_UNDERSCORES
+#else
+# undef NO_UNDERSCORES
+#endif
+
+#ifdef __UCLIBC_HAVE_ASM_SET_DIRECTIVE__
+# define HAVE_ASM_SET_DIRECTIVE
+#else
+# undef HAVE_ASM_SET_DIRECTIVE
+#endif
+
+#ifdef __UCLIBC_ASM_GLOBAL_DIRECTIVE__
+# define ASM_GLOBAL_DIRECTIVE __UCLIBC_ASM_GLOBAL_DIRECTIVE__
+#else
+# define ASM_GLOBAL_DIRECTIVE .global
+#endif
+
+#ifdef __UCLIBC_HAVE_ASM_WEAK_DIRECTIVE__
+# define HAVE_ASM_WEAK_DIRECTIVE
+#else
+# undef HAVE_ASM_WEAK_DIRECTIVE
+#endif
+
+#ifdef __UCLIBC_HAVE_ASM_WEAKEXT_DIRECTIVE__
+# define HAVE_ASM_WEAKEXT_DIRECTIVE
+#else
+# undef HAVE_ASM_WEAKEXT_DIRECTIVE
+#endif
+
+#ifdef __UCLIBC_HAVE_ASM_GLOBAL_DOT_NAME__
+# define HAVE_ASM_GLOBAL_DOT_NAME
+#else
+# undef HAVE_ASM_GLOBAL_DOT_NAME
+#endif
+
+#if defined HAVE_ASM_WEAK_DIRECTIVE || defined HAVE_ASM_WEAKEXT_DIRECTIVE
+# define HAVE_WEAK_SYMBOLS
+#endif
+
+#undef C_SYMBOL_NAME
+#ifndef C_SYMBOL_NAME
+# ifdef NO_UNDERSCORES
+#  define C_SYMBOL_NAME(name) name
+# else
+#  define C_SYMBOL_NAME(name) _##name
+# endif
+#endif
+
+#ifndef ASM_LINE_SEP
+# define ASM_LINE_SEP ;
+#endif
+
+#ifdef HAVE_ASM_GLOBAL_DOT_NAME
+# ifndef C_SYMBOL_DOT_NAME
+#  if defined __GNUC__ && defined __GNUC_MINOR__ \
+      && (__GNUC__ << 16) + __GNUC_MINOR__ >= (3 << 16) + 1
+#   define C_SYMBOL_DOT_NAME(name) .name
+#  else
+#   define C_SYMBOL_DOT_NAME(name) .##name
+#  endif
+# endif
+#endif
+
+#ifndef __ASSEMBLER__
+/* GCC understands weak symbols and aliases; use its interface where
+   possible, instead of embedded assembly language.  */
+
+/* Define ALIASNAME as a strong alias for NAME.  */
+# define strong_alias(name, aliasname) _strong_alias(name, aliasname)
+# define _strong_alias(name, aliasname) \
+  extern __typeof (name) aliasname __attribute__ ((alias (#name)));
+
+# ifdef HAVE_WEAK_SYMBOLS
+
+/* This comes between the return type and function name in
+   a function definition to make that definition weak.  */
+# define weak_function __attribute__ ((weak))
+# define weak_const_function __attribute__ ((weak, __const__))
+
+/* Define ALIASNAME as a weak alias for NAME.
+   If weak aliases are not available, this defines a strong alias.  */
+#  define weak_alias(name, aliasname) _weak_alias (name, aliasname)
+#  define _weak_alias(name, aliasname) \
+  extern __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
+
+/* Declare SYMBOL as weak undefined symbol (resolved to 0 if not defined).  */
+#  define weak_extern(symbol) _weak_extern (weak symbol)
+#  define _weak_extern(expr) _Pragma (#expr)
+
+# else
+
+# define weak_function /* empty */
+# define weak_const_function /* empty */
+
+#  define weak_alias(name, aliasname) strong_alias(name, aliasname)
+#  define weak_extern(symbol) /* Nothing. */
+
+# endif
+
+#else /* __ASSEMBLER__ */
+
+# ifdef HAVE_ASM_SET_DIRECTIVE
+#  ifdef HAVE_ASM_GLOBAL_DOT_NAME
+#   define strong_alias(original, alias)				\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
+  .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original) ASM_LINE_SEP	\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP		\
+  .set C_SYMBOL_DOT_NAME (alias),C_SYMBOL_DOT_NAME (original)
+#   define strong_data_alias(original, alias)				\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
+  .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original)
+#  else
+#   define strong_alias(original, alias)				\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
+  .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original)
+#   define strong_data_alias(original, alias) strong_alias(original, alias)
+#  endif
+# else
+#  ifdef HAVE_ASM_GLOBAL_DOT_NAME
+#   define strong_alias(original, alias)				\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
+  C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP		\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP		\
+  C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original)
+#   define strong_data_alias(original, alias)				\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
+  C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
+#  else
+#   define strong_alias(original, alias)				\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
+  C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
+#   define strong_data_alias(original, alias) strong_alias(original, alias)
+#  endif
+# endif
+
+# ifdef HAVE_WEAK_SYMBOLS
+#  ifdef HAVE_ASM_WEAKEXT_DIRECTIVE
+#   ifdef HAVE_ASM_GLOBAL_DOT_NAME
+#    define weak_alias(original, alias)					\
+  .weakext C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original) ASM_LINE_SEP \
+  .weakext C_SYMBOL_DOT_NAME (alias), C_SYMBOL_DOT_NAME (original)
+#   else
+#    define weak_alias(original, alias)					\
+  .weakext C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original)
+#   endif
+#   define weak_extern(symbol)						\
+  .weakext C_SYMBOL_NAME (symbol)
+
+#  else /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */
+
+#   ifdef HAVE_ASM_GLOBAL_DOT_NAME
+#    define weak_alias(original, alias)					\
+  .weak C_SYMBOL_NAME (alias) ASM_LINE_SEP				\
+  C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP		\
+  .weak C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP				\
+  C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original)
+#   else
+#    define weak_alias(original, alias)					\
+  .weak C_SYMBOL_NAME (alias) ASM_LINE_SEP				\
+  C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
+#   endif
+
+#   define weak_extern(symbol)						\
+  .weak C_SYMBOL_NAME (symbol)
+
+#  endif /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */
+
+# else /* ! HAVE_WEAK_SYMBOLS */
+
+#  define weak_alias(original, alias) strong_alias(original, alias)
+#  define weak_extern(symbol) /* Nothing */
+# endif /* ! HAVE_WEAK_SYMBOLS */
+
+#endif /* __ASSEMBLER__ */
+
+/* On some platforms we can make internal function calls (i.e., calls of
+   functions not exported) a bit faster by using a different calling
+   convention.  */
+#ifndef internal_function
+# define internal_function      /* empty */
+#endif
+
+/* We want the .gnu.warning.SYMBOL section to be unallocated.  */
+#define __make_section_unallocated(section_string)	\
+  asm (".section " section_string "\n\t.previous");
+
+/* Tacking on "\n\t#" to the section name makes gcc put it's bogus
+   section attributes on what looks like a comment to the assembler.  */
+#ifdef __sparc__ //HAVE_SECTION_QUOTES
+# define __sec_comment "\"\n\t#\""
+#else
+# define __sec_comment "\n\t#"
+#endif
+
+/* When a reference to SYMBOL is encountered, the linker will emit a
+   warning message MSG.  */
+#ifdef __cris__
+# define link_warning(symbol, msg)
+#else
+# define link_warning(symbol, msg) \
+  __make_section_unallocated (".gnu.warning." #symbol) \
+  static const char __evoke_link_warning_##symbol[]	\
+    __attribute__ ((used, section (".gnu.warning." #symbol __sec_comment))) \
+    = msg;
+#endif
+
+/* A canned warning for sysdeps/stub functions.  */
+#define	stub_warning(name) \
+  __make_section_unallocated (".gnu.uClibc-stub." #name) \
+  link_warning (name, \
+		"warning: " #name " is not implemented and will always fail")
+
+/* The following macros are used for PLT bypassing within libc.so
+   (and if needed other libraries similarly).
+   First of all, you need to have the function prototyped somewhere,
+   say in foo/foo.h:
+
+   int foo (int __bar);
+
+   If calls to foo within libc.so should always go to foo defined in libc.so,
+   then in include/foo.h you add:
+
+   libc_hidden_proto (foo)
+
+   line and after the foo function definition:
+
+   int foo (int __bar)
+   {
+     return __bar;
+   }
+   libc_hidden_def (foo)
+
+   or
+
+   int foo (int __bar)
+   {
+     return __bar;
+   }
+   libc_hidden_weak (foo)
+
+   Simularly for global data. If references to foo within libc.so should
+   always go to foo defined in libc.so, then in include/foo.h you add:
+
+   libc_hidden_proto (foo)
+
+   line and after foo's definition:
+
+   int foo = INITIAL_FOO_VALUE;
+   libc_hidden_data_def (foo)
+
+   or
+
+   int foo = INITIAL_FOO_VALUE;
+   libc_hidden_data_weak (foo)
+
+   If foo is normally just an alias (strong or weak) of some other function,
+   you should use the normal strong_alias first, then add libc_hidden_def
+   or libc_hidden_weak:
+
+   int baz (int __bar)
+   {
+     return __bar;
+   }
+   strong_alias (baz, foo)
+   libc_hidden_weak (foo)
+
+   If the function should be internal to multiple objects, say ld.so and
+   libc.so, the best way is to use:
+
+   #if !defined NOT_IN_libc || defined IS_IN_rtld
+   hidden_proto (foo)
+   #endif
+
+   in include/foo.h and the normal macros at all function definitions
+   depending on what DSO they belong to.
+
+   If versioned_symbol macro is used to define foo,
+   libc_hidden_ver macro should be used, as in:
+
+   int __real_foo (int __bar)
+   {
+     return __bar;
+   }
+   versioned_symbol (libc, __real_foo, foo, GLIBC_2_1);
+   libc_hidden_ver (__real_foo, foo)  */
+
+/* uClibc specific (the above comment was copied from glibc):
+ * a. when ppc64 will be supported, we need changes to support:
+ * strong_data_alias (used by asm hidden_data_def)
+ * b. libc_hidden_proto(foo) should be added after the header having foo's prototype
+ * or after extern foo... to all source files that should use the internal version
+ * of foo within libc, even to the file defining foo itself, libc_hidden_def does
+ * not hide __GI_foo itself, although the name suggests it (hiding is done exclusively
+ * by libc_hidden_proto). The reasoning to have it after the header w/ foo's prototype is
+ * to get first the __REDIRECT from original header and then create the __GI_foo alias
+ * c. no versioning support, hidden[_data]_ver are noop
+ * d. hidden_strong_alias() added, and hidden_def() in asm is hidden_strong_alias (not strong_alias)
+
+/* Arrange to hide uClibc internals */
+#if defined __GNUC__ && defined __GNUC_MINOR__ && \
+  ( __GNUC__ >= 3 && __GNUC_MINOR__ >= 3 ) || __GNUC__ >= 4
+# define attribute_hidden __attribute__ ((visibility ("hidden")))
+# define __hidden_proto_hiddenattr(attrs...) __attribute__ ((visibility ("hidden"), ##attrs))
+#else
+# define attribute_hidden
+# define __hidden_proto_hiddenattr(attrs...)
+#endif
+
+#if 1 /* SHARED */
+# ifndef __ASSEMBLER__
+#  define hidden_strong_alias(name, aliasname) _hidden_strong_alias(name, aliasname)
+#  define _hidden_strong_alias(name, aliasname) \
+   extern __typeof (name) aliasname __attribute__ ((alias (#name))) attribute_hidden;
+
+#  define hidden_proto(name, attrs...) __hidden_proto (name, __GI_##name, ##attrs)
+#  define __hidden_proto(name, internal, attrs...) \
+   extern __typeof (name) name __asm__ (__hidden_asmname (#internal)) \
+   __hidden_proto_hiddenattr (attrs);
+#  define __hidden_asmname(name) __hidden_asmname1 (__USER_LABEL_PREFIX__, name)
+#  define __hidden_asmname1(prefix, name) __hidden_asmname2(prefix, name)
+#  define __hidden_asmname2(prefix, name) #prefix name
+#  define __hidden_ver1(local, internal, name) \
+   extern __typeof (name) __EI_##name __asm__(__hidden_asmname (#internal)); \
+   extern __typeof (name) __EI_##name __attribute__((alias (__hidden_asmname1 (,#local))))
+#  define hidden_def(name)		__hidden_ver1(__GI_##name, name, name);
+#  define hidden_data_def(name)		hidden_def(name)
+#  define hidden_weak(name)		__hidden_ver1(__GI_##name, name, name) __attribute__((weak));
+#  define hidden_data_weak(name)	hidden_weak(name)
+
+# else /* __ASSEMBLER__ */
+# ifdef HAVE_ASM_SET_DIRECTIVE
+#  ifdef HAVE_ASM_GLOBAL_DOT_NAME
+#   define hidden_strong_alias(original, alias)				\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
+  .hidden C_SYMBOL_NAME (alias) ASM_LINE_SEP				\
+  .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original) ASM_LINE_SEP	\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP		\
+  .hidden C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP			\
+  .set C_SYMBOL_DOT_NAME (alias),C_SYMBOL_DOT_NAME (original)
+#  else
+#   define hidden_strong_alias(original, alias)				\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
+  .hidden C_SYMBOL_NAME (alias) ASM_LINE_SEP				\
+  .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original)
+#  endif
+# else
+#  ifdef HAVE_ASM_GLOBAL_DOT_NAME
+#   define hidden_strong_alias(original, alias)				\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
+  .hidden C_SYMBOL_NAME (alias) ASM_LINE_SEP				\
+  C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP		\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP		\
+  .hidden C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP			\
+  C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original)
+#  else
+#   define strong_alias(original, alias)				\
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
+  .hidden C_SYMBOL_NAME (alias) ASM_LINE_SEP				\
+  C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
+#  endif
+# endif
+
+/* For assembly, we need to do the opposite of what we do in C:
+   in assembly gcc __REDIRECT stuff is not in place, so functions
+   are defined by its normal name and we need to create the
+   __GI_* alias to it, in C __REDIRECT causes the function definition
+   to use __GI_* name and we need to add alias to the real name.
+   There is no reason to use hidden_weak over hidden_def in assembly,
+   but we provide it for consistency with the C usage.
+   hidden_proto doesn't make sense for assembly but the equivalent
+   is to call via the HIDDEN_JUMPTARGET macro instead of JUMPTARGET.  */
+#  define hidden_def(name)	hidden_strong_alias (name, __GI_##name)
+#  define hidden_data_def(name)	hidden_strong_alias (name, __GI_##name)
+#  define hidden_weak(name)	hidden_def (name)
+#  define hidden_data_weak(name)	hidden_data_def (name)
+#  define HIDDEN_JUMPTARGET(name) __GI_##name
+# endif /* __ASSEMBLER__ */
+#else /* SHARED */
+# define hidden_strong_alias(name, aliasname)
+
+# ifndef __ASSEMBLER__
+#  define hidden_proto(name, attrs...)
+# else
+#  define HIDDEN_JUMPTARGET(name) name
+# endif
+# define hidden_def(name)
+# define hidden_data_def(name)
+# define hidden_weak(name)
+# define hidden_data_weak(name)
+#endif /* SHARED */
+
+/* uClibc does not support versioning yet. */
+#define versioned_symbol(lib, local, symbol, version) /* weak_alias(local, symbol) */
+#define hidden_ver(local, name) /* strong_alias(local, __GI_##name) */
+#define hidden_data_ver(local, name) /* strong_alias(local,__GI_##name) */
+
+#if !defined NOT_IN_libc
+# define libc_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define libc_hidden_def(name) hidden_def (name)
+# define libc_hidden_weak(name) hidden_weak (name)
+# define libc_hidden_ver(local, name) hidden_ver (local, name)
+# define libc_hidden_data_def(name) hidden_data_def (name)
+# define libc_hidden_data_weak(name) hidden_data_weak (name)
+# define libc_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define libc_hidden_proto(name, attrs...)
+# define libc_hidden_def(name)
+# define libc_hidden_weak(name)
+# define libc_hidden_ver(local, name)
+# define libc_hidden_data_def(name)
+# define libc_hidden_data_weak(name)
+# define libc_hidden_data_ver(local, name)
+#endif
+
+#if defined NOT_IN_libc && defined IS_IN_rtld
+# define rtld_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define rtld_hidden_def(name) hidden_def (name)
+# define rtld_hidden_weak(name) hidden_weak (name)
+# define rtld_hidden_ver(local, name) hidden_ver (local, name)
+# define rtld_hidden_data_def(name) hidden_data_def (name)
+# define rtld_hidden_data_weak(name) hidden_data_weak (name)
+# define rtld_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define rtld_hidden_proto(name, attrs...)
+# define rtld_hidden_def(name)
+# define rtld_hidden_weak(name)
+# define rtld_hidden_ver(local, name)
+# define rtld_hidden_data_def(name)
+# define rtld_hidden_data_weak(name)
+# define rtld_hidden_data_ver(local, name)
+#endif
+
+#if defined NOT_IN_libc && defined IS_IN_libm
+# define libm_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define libm_hidden_def(name) hidden_def (name)
+# define libm_hidden_weak(name) hidden_weak (name)
+# define libm_hidden_ver(local, name) hidden_ver (local, name)
+# define libm_hidden_data_def(name) hidden_data_def (name)
+# define libm_hidden_data_weak(name) hidden_data_weak (name)
+# define libm_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define libm_hidden_proto(name, attrs...)
+# define libm_hidden_def(name)
+# define libm_hidden_weak(name)
+# define libm_hidden_ver(local, name)
+# define libm_hidden_data_def(name)
+# define libm_hidden_data_weak(name)
+# define libm_hidden_data_ver(local, name)
+#endif
+
+#if defined NOT_IN_libc && defined IS_IN_libresolv
+# define libresolv_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define libresolv_hidden_def(name) hidden_def (name)
+# define libresolv_hidden_weak(name) hidden_weak (name)
+# define libresolv_hidden_ver(local, name) hidden_ver (local, name)
+# define libresolv_hidden_data_def(name) hidden_data_def (name)
+# define libresolv_hidden_data_weak(name) hidden_data_weak (name)
+# define libresolv_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define libresolv_hidden_proto(name, attrs...)
+# define libresolv_hidden_def(name)
+# define libresolv_hidden_weak(name)
+# define libresolv_hidden_ver(local, name)
+# define libresolv_hidden_data_def(name)
+# define libresolv_hidden_data_weak(name)
+# define libresolv_hidden_data_ver(local, name)
+#endif
+
+#if defined NOT_IN_libc && defined IS_IN_librt
+# define librt_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define librt_hidden_def(name) hidden_def (name)
+# define librt_hidden_weak(name) hidden_weak (name)
+# define librt_hidden_ver(local, name) hidden_ver (local, name)
+# define librt_hidden_data_def(name) hidden_data_def (name)
+# define librt_hidden_data_weak(name) hidden_data_weak (name)
+# define librt_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define librt_hidden_proto(name, attrs...)
+# define librt_hidden_def(name)
+# define librt_hidden_weak(name)
+# define librt_hidden_ver(local, name)
+# define librt_hidden_data_def(name)
+# define librt_hidden_data_weak(name)
+# define librt_hidden_data_ver(local, name)
+#endif
+
+#if defined NOT_IN_libc && defined IS_IN_libdl
+# define libdl_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define libdl_hidden_def(name) hidden_def (name)
+# define libdl_hidden_weak(name) hidden_weak (name)
+# define libdl_hidden_ver(local, name) hidden_ver (local, name)
+# define libdl_hidden_data_def(name) hidden_data_def (name)
+# define libdl_hidden_data_weak(name) hidden_data_weak (name)
+# define libdl_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define libdl_hidden_proto(name, attrs...)
+# define libdl_hidden_def(name)
+# define libdl_hidden_weak(name)
+# define libdl_hidden_ver(local, name)
+# define libdl_hidden_data_def(name)
+# define libdl_hidden_data_weak(name)
+# define libdl_hidden_data_ver(local, name)
+#endif
+
+#if defined NOT_IN_libc && defined IS_IN_libintl
+# define libintl_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define libintl_hidden_def(name) hidden_def (name)
+# define libintl_hidden_weak(name) hidden_weak (name)
+# define libintl_hidden_ver(local, name) hidden_ver (local, name)
+# define libintl_hidden_data_def(name) hidden_data_def (name)
+# define libintl_hidden_data_weak(name) hidden_data_weak (name)
+# define libintl_hidden_data_ver(local, name) hidden_data_ver(local, name)
+#else
+# define libintl_hidden_proto(name, attrs...)
+# define libintl_hidden_def(name)
+# define libintl_hidden_weak(name)
+# define libintl_hidden_ver(local, name)
+# define libintl_hidden_data_def(name)
+# define libintl_hidden_data_weak(name)
+# define libintl_hidden_data_ver(local, name)
+#endif
+
+#if defined NOT_IN_libc && defined IS_IN_libnsl
+# define libnsl_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define libnsl_hidden_def(name) hidden_def (name)
+# define libnsl_hidden_weak(name) hidden_weak (name)
+# define libnsl_hidden_ver(local, name) hidden_ver (local, name)
+# define libnsl_hidden_data_def(name) hidden_data_def (name)
+# define libnsl_hidden_data_weak(name) hidden_data_weak (name)
+# define libnsl_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define libnsl_hidden_proto(name, attrs...)
+# define libnsl_hidden_def(name)
+# define libnsl_hidden_weak(name)
+# define libnsl_hidden_ver(local, name)
+# define libnsl_hidden_data_def(name)
+# define libnsl_hidden_data_weak(name)
+# define libnsl_hidden_data_ver(local, name)
+#endif
+
+#if defined NOT_IN_libc && defined IS_IN_libutil
+# define libutil_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define libutil_hidden_def(name) hidden_def (name)
+# define libutil_hidden_weak(name) hidden_weak (name)
+# define libutil_hidden_ver(local, name) hidden_ver (local, name)
+# define libutil_hidden_data_def(name) hidden_data_def (name)
+# define libutil_hidden_data_weak(name) hidden_data_weak (name)
+# define libutil_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define libutil_hidden_proto(name, attrs...)
+# define libutil_hidden_def(name)
+# define libutil_hidden_weak(name)
+# define libutil_hidden_ver(local, name)
+# define libutil_hidden_data_def(name)
+# define libutil_hidden_data_weak(name)
+# define libutil_hidden_data_ver(local, name)
+#endif
+
+#if defined NOT_IN_libc && defined IS_IN_libcrypt
+# define libcrypt_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define libcrypt_hidden_def(name) hidden_def (name)
+# define libcrypt_hidden_weak(name) hidden_weak (name)
+# define libcrypt_hidden_ver(local, name) hidden_ver (local, name)
+# define libcrypt_hidden_data_def(name) hidden_data_def (name)
+# define libcrypt_hidden_data_weak(name) hidden_data_weak (name)
+# define libcrypt_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define libcrypt_hidden_proto(name, attrs...)
+# define libcrypt_hidden_def(name)
+# define libcrypt_hidden_weak(name)
+# define libcrypt_hidden_ver(local, name)
+# define libcrypt_hidden_data_def(name)
+# define libcrypt_hidden_data_weak(name)
+# define libcrypt_hidden_data_ver(local, name)
+#endif
+
+#if defined NOT_IN_libc && defined IS_IN_libpthread
+# define libpthread_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define libpthread_hidden_def(name) hidden_def (name)
+# define libpthread_hidden_weak(name) hidden_weak (name)
+# define libpthread_hidden_ver(local, name) hidden_ver (local, name)
+# define libpthread_hidden_data_def(name) hidden_data_def (name)
+# define libpthread_hidden_data_weak(name) hidden_data_weak (name)
+# define libpthread_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define libpthread_hidden_proto(name, attrs...)
+# define libpthread_hidden_def(name)
+# define libpthread_hidden_weak(name)
+# define libpthread_hidden_ver(local, name)
+# define libpthread_hidden_data_def(name)
+# define libpthread_hidden_data_weak(name)
+# define libpthread_hidden_data_ver(local, name)
+#endif
+
+#endif /* _LIBC_SYMBOLS_H */