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Allow building with the changed weakref semantic in GCC 4.2 and clang.

This commit is contained in:
joerg 2011-02-18 23:37:36 +00:00
parent 56e0e00bb2
commit 86df96f692
1 changed files with 10 additions and 3 deletions
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13
lib/csu/common/crt0-common.c
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@ -1,4 +1,4 @@
/* $NetBSD: crt0-common.c,v 1.2 2011/02/08 02:03:13 matt Exp $ */
/* $NetBSD: crt0-common.c,v 1.3 2011/02/18 23:37:36 joerg Exp $ */
/*
* Copyright (c) 1998 Christos Zoulas
@ -36,7 +36,7 @@
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: crt0-common.c,v 1.2 2011/02/08 02:03:13 matt Exp $");
__RCSID("$NetBSD: crt0-common.c,v 1.3 2011/02/18 23:37:36 joerg Exp $");
#include <sys/types.h>
#include <sys/syscall.h>
@ -57,7 +57,14 @@ extern void _fini(void);
* if we happen to be compiling without -static but with without any
* shared libs present, things will still work.
*/
#if __GNUC_PREREQ__(4,2)
static int rtld_DYNAMIC __attribute__((__weakref__, __alias__("_DYNAMIC")));
#define DYNAMIC_SYM rtld_DYNAMIC
#else
extern int _DYNAMIC __weak_reference(_DYNAMIC);
#define DYNAMIC_SYM _DYNAMIC
#endif
#ifdef MCRT0
extern void monstartup(u_long, u_long);
@ -104,7 +111,7 @@ ___start(int argc, char **argv, char **envp,
if (ps_strings != NULL)
__ps_strings = ps_strings;
if (&_DYNAMIC != NULL) {
if (&DYNAMIC_SYM != NULL) {
if (obj == NULL)
_FATAL("NULL Obj_Entry pointer in GOT\n");
if (obj->magic != RTLD_MAGIC)