Index: ruby-1.8.7-p249/configure.in
===================================================================
--- ruby-1.8.7-p249.orig/configure.in
+++ ruby-1.8.7-p249/configure.in
@@ -1183,7 +1183,7 @@ if test "$with_dln_a_out" != yes; then
 	linux* | gnu* | k*bsd*-gnu | netbsd* | bsdi*)
 			: ${LDSHARED='${CC} -shared'}
 			if test "$rb_cv_binary_elf" = yes; then
-			    LDFLAGS="$LDFLAGS -Wl,-export-dynamic"
+			    LDFLAGS="$LDFLAGS -Wl,-export-dynamic -Wl,--no-undefined"
 			fi
 			rb_cv_dlopen=yes ;;
 	interix*) 	: ${LDSHARED="$CC -shared"}