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[HAVE_WEAK_SYMBOLS] (_weak_extern): Define using _Pragma(weak ...).

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This commit is contained in:
Ulrich Drepper 2003-01-03 23:43:53 +00:00
parent f02392ec3c
commit 40e94df30a
1 changed files with 3 additions and 19 deletions
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22
include/libc-symbols.h
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@ -1,6 +1,6 @@
/* Support macros for making weak and strong aliases for symbols,
and for using symbol sets and linker warnings with GNU ld.
Copyright (C) 1995-1998,2000,2001,2002 Free Software Foundation, Inc.
Copyright (C) 1995-1998,2000,2001,2002,2003 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
@ -116,24 +116,8 @@
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 (symbol)
# ifdef HAVE_ASM_WEAKEXT_DIRECTIVE
# ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define _weak_extern(symbol) \
asm (".weakext " __SYMBOL_PREFIX #symbol "\n\t" \
".weakext ." __SYMBOL_PREFIX #symbol);
# else
# define _weak_extern(symbol) asm (".weakext " __SYMBOL_PREFIX #symbol);
# endif
# else
# ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define _weak_extern(symbol) \
asm (".weak " __SYMBOL_PREFIX #symbol "\n\t" \
".weak ." __SYMBOL_PREFIX #symbol);
# else
# define _weak_extern(symbol) asm (".weak " __SYMBOL_PREFIX #symbol);
# endif
# endif
# define weak_extern(symbol) _weak_extern (weak symbol)
# define _weak_extern(expr) _Pragma (#expr)
# else