[PATCH] fix appending of -no_fixup_chains to _lt_dar_allow_undefined

With current development branch, 'allow_undefined_flag' in the libtool
script generated after running configure looked like this:
 allow_undefined_flag="\$_lt_dar_allow_undefined \$wl-no_fixup_chains"

The solution I ended up with and applied in SDL is the following:
(also attached as I'm sure gmail will mangle the patch)

Any better solution is welcome, of course.

diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 31f1be0..5357a3d 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -1089,9 +1089,10 @@ _LT_EOF
         10.[[012]],*|,*powerpc*-darwin[[5-8]]*)
           _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined
${wl}suppress' ;;
         *)
-          _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup'
           if test yes = "$lt_cv_support_no_fixup_chains"; then
-            _lt_dar_allow_undefined='$_lt_dar_allow_undefined
$wl-no_fixup_chains'
+            _lt_dar_allow_undefined='$wl-undefined
${wl}dynamic_lookup $wl-no_fixup_chains'
+          else
+            _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup'
           fi
         ;;
       esac

From 6bf0f2866144135dc52777d63ffbd74772a987f8 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[email protected]>
Date: Sat, 29 Jun 2024 17:51:56 +0300
Subject: [PATCH] libtool.m4: fix appending of -no_fixup_chains to _lt_dar_allow_undefined

---
 m4/libtool.m4 |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 31f1be0..5357a3d 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -1089,9 +1089,10 @@ _LT_EOF
         10.[[012]],*|,*powerpc*-darwin[[5-8]]*)
           _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
         *)
-          _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup'
           if test yes = "$lt_cv_support_no_fixup_chains"; then
-            _lt_dar_allow_undefined='$_lt_dar_allow_undefined $wl-no_fixup_chains'
+            _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup $wl-no_fixup_chains'
+          else
+            _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup'
           fi
         ;;
       esac
-- 
1.7.1