Ticket #40044: patch-m4-lg_replace_flags.m4.diff

m4/lg_replace_flag.m4

@@ -5 +5 @@
 for flag in [$]$1 ; do
   if test x"$flag" = x"$2" ; then
     echo "replacing $flag with $3 in $1"
-    out+=" $3"
+    out="$out $3"
   else
-    out+=" $flag"
+    out="$out $flag"
   fi
 done
 $1=$out