--- Makefile.old	2010-12-02 15:43:29.000000000 +0100
+++ Makefile	2010-12-02 15:47:18.000000000 +0100
@@ -11,10 +11,10 @@
 depend: *.hpp $(SOURCES)
 	$(CXX) -MM $(SOURCES) > depend
 
-include depend
+-include depend
 
 $(PROGNAME): $(SOURCES:.cpp=.o)
-	$(CXX) -ggdb -o $(PROGNAME) $(SOURCES:.cpp=.o) $(LDFLAGS) -lboost_program_options
+	$(CXX) ${CXXFLAGS} -o $(PROGNAME) $(SOURCES:.cpp=.o) $(LDFLAGS) -lboost_program_options
 
 clean:
 	rm -f $(SOURCES:.cpp=.o) $(PROGNAME)