Automatic header dependencies with gmake

Question

EDITED

I\'m trying to have source files recompiled without having to specify header files for each CPP in the makefile.

I\'m down to :

Answer 1

You don't have dependency file as a prerequisite for compilation rule. Should be something like this:

#This is the rule for creating the dependency files
src/%.d: src/%.cpp
    $(CXX) $(CXX_CFLAGS) -MM -MF $(patsubst obj/%.o,obj/%.d,$@) -o $@ $<

obj/%.o: %.cpp %.d
    $(CXX) $(CXXFLAGS) -o $@ -c $<

-include $(SRC:%.cpp=%.d)

The last string adds dependency on headers.

EDIT

I see you have

-include $(DEPS)

but check with $(warning DEPS = $(DEPS)) whether you really include existing files, otherwise make just silently ignore these.