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gnu ld version check in libstdc++-v3/acinclude.m4
- From: Richard Guenther <rguenther at suse dot de>
- To: gcc-patches at gcc dot gnu dot org
- Cc: libstdc++ at gcc dot gnu dot org
- Date: Tue, 20 Feb 2007 13:33:09 +0100 (CET)
- Subject: gnu ld version check in libstdc++-v3/acinclude.m4
It looks like binutils recently changed the formatting of it's version
string with introducing --with-pkgversion. This causes the configure
check for symbol versioning to fail for libstdc++.
In particular we now have
> ld --version
GNU ld version (SUSE Linux) 2.17.50.20070219 20070219
instead of
ld --version
GNU ld version 2.17.50.0.5 20060927 (SUSE Linux)
The following happens to catch both new and old binutils version strings.
Ok for mainline and active branches? Or better suggestions?
Thanks,
Richard.
2007-02-20 Richard Guenther <rguenther@suse.de>
* acinclude.m4: Adjust regular expression for ld version extraction.
* configure: Regenerate.
Index: acinclude.m4
===================================================================
*** acinclude.m4 (revision 122127)
--- acinclude.m4 (working copy)
*************** AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES]
*** 235,241 ****
AC_MSG_CHECKING([for ld version])
changequote(,)
ldver=`$LD --version 2>/dev/null | head -1 | \
! sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
changequote([,])
glibcxx_gnu_ld_version=`echo $ldver | \
$AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
--- 235,241 ----
AC_MSG_CHECKING([for ld version])
changequote(,)
ldver=`$LD --version 2>/dev/null | head -1 | \
! sed -e 's/GNU ld version \(([^(]*)\)\? \?\([0-9.][0-9.]*\).*/\2/'`
changequote([,])
glibcxx_gnu_ld_version=`echo $ldver | \
$AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`