Add that to your CFLAGS and include the generated dependency files by adding something like
-include $(OBJECTS:%.o=%.d)
[1] http://gcc.gnu.org/onlinedocs/gcc/Preprocessor-Options.html
Add that to your CFLAGS and include the generated dependency files by adding something like
to the Makefile.[1] http://gcc.gnu.org/onlinedocs/gcc/Preprocessor-Options.html