Index: ChangeLog
===================================================================
--- ChangeLog	(revision 37039)
+++ ChangeLog	(working copy)
@@ -1,3 +1,9 @@
+Thu Sep 27 19:20:29 2012  Akinori MUSHA  <knu@iDaemons.org>
+
+	* configure.in (--with-opt-dir): Make this also work on DLDFLAGS
+	  so LIBRUBY_SO links fine with libexecinfo installed in a
+	  non-system directory.
+
 Thu Sep 27 18:12:20 2012  Aaron Patterson <aaron@tenderlovemaking.com>
 
 	* ext/syslog/lib/syslog/logger.rb: add a formatter to the
Index: configure.in
===================================================================
--- configure.in	(revision 37039)
+++ configure.in	(working copy)
@@ -2353,7 +2353,9 @@ AC_ARG_WITH(opt-dir,
 	[
 		CPPFLAGS="$CPPFLAGS -I$withval/include"
 		val=`echo $withval|sed 's/\\//\\\\\\//g'`
-		LDFLAGS="$LDFLAGS "`echo ${LIBPATHFLAG} ${RPATHFLAG}|sed -E 's/%1\\$-s|%s/'${val}'\/lib/g'`
+		val=`echo ${LIBPATHFLAG} ${RPATHFLAG}|sed -E 's/%1\\$-s|%s/'${val}'\/lib/g'`
+		LDFLAGS="$LDFLAGS $val"
+		DLDFLAGS="$DLDFLAGS $val"
 	])
 
 AS_CASE(["$target_cpu-$target_os"],