Attachment 5736 Details for Bug 7209 – configure.in patch

[patch] configure.in patch

0001-add-configure-test-for-ld-flag-as-needed.-A-linker.patch (text/plain), 1.62 KB, created by Olaf Flebbe on 2010-05-24 17:11:18 UTC

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Creator: Olaf Flebbe

Created: 2010-05-24 17:11:18 UTC

Size: 1.62 KB

patch

obsolete

>From 1cd472b63ba333245e3b97a2f585940bda7f47c2 Mon Sep 17 00:00:00 2001
>From: Olaf Flebbe <o.flebbe@science-computing.de>
>Date: Mon, 24 May 2010 22:32:47 +0200
>Subject: [PATCH] add configure test for ld flag --as-needed. A linker bug may break underlinked readline libs.
>
>---
> source3/configure.in |   17 +++++++++++++++++
> 1 files changed, 17 insertions(+), 0 deletions(-)
>
>diff --git a/source3/configure.in b/source3/configure.in
>index 74a2479..fc141f3 100644
>--- a/source3/configure.in
>+++ b/source3/configure.in
>@@ -1697,6 +1697,7 @@ fi
> 
> AC_MSG_RESULT($BLDSHARED)
> 
>+saved_before_as_needed_ldflags="$LDFLAGS"
> for flags in "-Wl,--as-needed" "-Wl,-z,ignore" "-z ignore" ; do
> 	saved_ldflags="$LDFLAGS"
> 	AC_MSG_CHECKING([if $flags works])
>@@ -1710,6 +1711,22 @@ for flags in "-Wl,--as-needed" "-Wl,-z,ignore" "-z ignore" ; do
> 	test x"$ld_as_needed_flag_found" = xyes && break
> done
> 
>+# check wether a libreadline triggers a bug in ld with --as-needed
>+# i.e. RHEL5
>+
>+if test x$ac_cv_lib_readline_rl_callback_handler_install = xyes ; then
>+	if test x$ld_as_needed_flag_found = xyes ; then
>+		AC_MSG_CHECKING([if $LD_AS_NEEDED_FLAG works with readline])
>+		# try if check no fails
>+		save_LIBS=$LIBS
>+		LIBS="$LIBS $TERMLIBS"
>+		AC_TRY_LINK([], [rl_callback_handler_install();], [AC_MSG_RESULT([yes])],[ AC_MSG_RESULT([no]); LDFLAGS="$saved_before_as_needed_ldflags"])
>+		LIBS="$save_LIBS"
>+        fi
>+fi
>+
>+
>+
> # for historical reasons almost all linkers don't complain about unresolved
> # symbols in shared libs. Except for the internal samba modules we want to get
> # errors when we produce a shared lib with unresolved symbols. On some
>-- 
>1.6.0.2
>

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