c++: Module lang hook overriding

This installs stub lang hooks for modules and creates the module dump file.

	gcc/cp/
	* cp-lang.c (LANG_HOOKS_PREPROCESS_MAIN_FILE): Override.
	(LANG_HOOKS_PREPROCESS_OPTIONS): Override.
	(LANG_HOOKS_PREPROCESS_TOKEN): Override.
	* cp-objcp-common.c (cp_register_dumps): Add module dump.
	(cp_handle_option): New.
	* cp-objcp-common.h (cp_handle_option): Declare.
	(LANG_HOOKS_HANDLE_OPTION): Override.
	* cp-tree.h (module_dump_id): Declare.
	* module.cc (module_dump_id): Define.
	(module_begin_main_file, handle_module_option)
	(module_preproces_options): Stubs.

1 files changed, 19 insertions, 0 deletions

diff --git a/gcc/cp/module.cc b/gcc/cp/module.cc
index 11eb6da..02b5af8 100644
--- a/gcc/cp/module.cc
+++ b/gcc/cp/module.cc
@@ -65,6 +65,9 @@ along with GCC; see the file COPYING3.  If not see
 #include "intl.h"
 #include "langhooks.h"
 
+/* Id for dumping module information.  */
+int module_dump_id;
+
 /* What the current TU is.  */
 unsigned module_kind;
 
@@ -190,6 +193,11 @@ preprocessed_module (cpp_reader *)
 }
 
 void
+module_begin_main_file (cpp_reader *, line_maps *, const line_map_ordinary *)
+{
+}
+
+void
 init_modules (cpp_reader *)
 {
   /* Do not turn on yet.  */
@@ -207,3 +215,14 @@ void
 fini_modules ()
 {
 }
+
+bool
+handle_module_option (unsigned, const char *, int)
+{
+  return false;
+}
+
+void
+module_preprocess_options (cpp_reader *)
+{
+}