plugin.c (try_init_one_plugin): passes RTLD_GLOBAL to dlopen.

2009-07-09  Basile Starynkevitch  <basile@starynkevitch.net>

	* gcc/plugin.c (try_init_one_plugin): passes RTLD_GLOBAL to dlopen.

From-SVN: r149424

gcc/ChangeLog

+
+2009-07-09  Basile Starynkevitch  <basile@starynkevitch.net>
+
+	* plugin.c (try_init_one_plugin): passes RTLD_GLOBAL to dlopen. 
+
 2009-07-09  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/40692

gcc/plugin.c

@@ -592,7 +592,11 @@ try_init_one_plugin (struct plugin_name_args *plugin)
   char *err;
   PTR_UNION_TYPE (plugin_init_func) plugin_init_union;
 
-  dl_handle = dlopen (plugin->full_name, RTLD_NOW);
+  /* We use RTLD_NOW to accelerate binding and detect any mismatch
+     between the API expected by the plugin and the GCC API; we use
+     RTLD_GLOBAL which is useful to plugins which themselves call
+     dlopen.  */
+  dl_handle = dlopen (plugin->full_name, RTLD_NOW | RTLD_GLOBAL);
   if (!dl_handle)
     {
       error ("Cannot load plugin %s\n%s", plugin->full_name, dlerror ());