Use -Wl,-undefined,dynamic_lookup on darwin

	* testsuite/libgomp.c++/pr24455.C: Use
	-Wl,-undefined,dynamic_lookup on darwin.

From-SVN: r193318

libgomp/ChangeLog

+2012-11-07  Jack Howarth <howarth@bromo.med.uc.edu>
+
+	* testsuite/libgomp.c++/pr24455.C: Use
+	-Wl,-undefined,dynamic_lookup on darwin.
+
 2012-11-07  David Edelsohn  <dje.gcc@gmail.com>
 
 	* testsuite/libgomp.c++/pr24455.C: Use -Wl,-G on AIX.

libgomp/testsuite/libgomp.c++/pr24455.C

@@ -2,6 +2,7 @@
 // { dg-additional-sources pr24455-1.C }
 // { dg-require-effective-target tls_runtime }
 // { dg-options "-Wl,-G" { target powerpc-ibm-aix* } }
+// { dg-options "-Wl,-undefined,dynamic_lookup" { target *-*-darwin* } }
 
 extern "C" void abort (void);