Consistent use of 'override' for virtual methods in derived classes.

o Not all derived methods were marked 'override', but it is a great
  feature of C++11 that we should make use of.
o While at it: touched header files got a -*- c++ -*- for emacs to
  provide support for that language.
o use YS_OVERRIDE for all override keywords (though we should probably
  use the plain keyword going forward now that C++11 is established)

1 files changed, 2 insertions, 2 deletions

diff --git a/backends/spice/spice.cc b/backends/spice/spice.cc
index 4101cbf98..b6a3f1e77 100644
--- a/backends/spice/spice.cc
+++ b/backends/spice/spice.cc
@@ -132,7 +132,7 @@ static void print_spice_module(std::ostream &f, RTLIL::Module *module, RTLIL::De
 
 struct SpiceBackend : public Backend {
 	SpiceBackend() : Backend("spice", "write design to SPICE netlist file") { }
-	virtual void help()
+	void help() YS_OVERRIDE
 	{
 		//   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
 		log("\n");
@@ -161,7 +161,7 @@ struct SpiceBackend : public Backend {
 		log("        set the specified module as design top module\n");
 		log("\n");
 	}
-	virtual void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design)
+	void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
 	{
 		std::string top_module_name;
 		RTLIL::Module *top_module = NULL;