diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5c375309f8c5..746e7705bbdd 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -14,6 +14,8 @@
 
 	* doc/tm.texi (TARGET_MIN_DIVISIONS_FOR_RECIP_MUL): Fix return type.
 
+	* gcc-plugin.h (plugin_init): Use "C" likage for c++.
+
 2010-01-21  Martin Jambor  <mjambor@suse.cz>
 
 	PR tree-optimization/42585
diff --git a/gcc/gcc-plugin.h b/gcc/gcc-plugin.h
index ec12265417de..cbcd554ec6cf 100644
--- a/gcc/gcc-plugin.h
+++ b/gcc/gcc-plugin.h
@@ -96,10 +96,16 @@ extern bool plugin_default_version_check (struct plugin_gcc_version *,
 typedef int (*plugin_init_func) (struct plugin_name_args *plugin_info,
                                  struct plugin_gcc_version *version);
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 /* Declaration for "plugin_init" function so that it doesn't need to be
    duplicated in every plugin.  */
 extern int plugin_init (struct plugin_name_args *plugin_info,
                         struct plugin_gcc_version *version);
+#ifdef __cplusplus
+}
+#endif
 
 /* Function type for a plugin callback routine.