needed as old gcc releases output everything to stderr, even stdout output from
ld
Fixes #7825
Autobuild-User: Björn Jacke <bj@sernet.de>
Autobuild-Date: Fri Nov 26 20:15:24 CET 2010 on sn-devel-104
(cherry picked from commit
70a7da0e101910e3ceb08b86d4b840b219e24d7d)
dnl --allow-shlib-undefined flag defined. This causes a stackload of
dnl warnings when building modules.
if test "$ac_cv_prog_gnu_ld" = "yes"; then
- ac_cv_gnu_ld_version=`$CC -Wl,-v /dev/null 2>/dev/null | head -1`
+ ac_cv_gnu_ld_version=`$CC -Wl,-v /dev/null 2>&1 < /dev/null | grep "GNU ld"`
AC_MSG_CHECKING(GNU ld release date)
changequote(,)dnl
ac_cv_gnu_ld_date=`echo $ac_cv_gnu_ld_version | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`