re PR target/43715 (configure option --enable-plugin fails on darwin)

2010-04-21  Jack Howarth <howarth@bromo.med.uc.edu>

        PR 43715
	* testsuite/lib/plugin-support.exp: Use "-undefined
	dynamic_lookup" on darwin.

From-SVN: r158747

gcc/testsuite/ChangeLog

+2010-04-21  Jack Howarth <howarth@bromo.med.uc.edu>
+
+	PR 43715
+	* testsuite/lib/plugin-support.exp: Use "-undefined
+	dynamic_lookup" on darwin.
+
 2010-04-26  Richard Guenther  <rguenther@suse.de>
 
 	* gcc.dg/lto/20100426_0.c: New testcase.

gcc/testsuite/lib/plugin-support.exp

@@ -88,6 +88,10 @@ proc plugin-test-execute { plugin_src plugin_tests } {
 
     set optstr "$includes $extra_flags -DIN_GCC -fPIC -shared"
 
+    if { [ ishost *-*-darwin* ] } {
+        set optstr [concat $optstr "-undefined dynamic_lookup"]
+    }
+
     # Temporarily switch to the environment for the plugin compiler.
     restore_ld_library_path_env_vars
     set status [remote_exec build "$PLUGINCC $PLUGINCFLAGS $plugin_src $optstr -o $plugin_lib"]