jw-pkg/make/depend.mk

# variables
DEPEND_CFLAGS   += -D__MAKEDEPEND__
DEPEND_CPPFLAGS += -D__MAKEDEPEND__
DEPEND_MK       += $(addprefix .,$(addsuffix .dep.mk, $(OBJ)))

ifeq ($(DEPEND_MK_INCLUDED),)

all:
clean: depclean

# convenience targets
dep: $(DEPEND_MK)
depclean:
	$(RM) -f .*.dep.mk

$(DEPEND_MK): $(PREREQ_DONE)

ifneq ($(DEPEND_MK),)
  ifeq ($(MAKECMDGOALS),)
  -include $(DEPEND_MK)
  endif
  ifneq ($(filter all,$(MAKECMDGOALS)),)
  -include $(DEPEND_MK)
  endif
endif

%.o: .%.o.dep.mk

.%.o.dep.mk: %.cpp $(BUILD_HDR)
	$(CC) -M $(BUILD_CPPFLAGS) $(DEPEND_CPPFLAGS) $< -o $@

.%.o.dep.mk: %.cc $(BUILD_HDR)
	$(CC) -M $(BUILD_CPPFLAGS) $(DEPEND_CPPFLAGS) $< -o $@

.%.o.dep.mk: %.c $(BUILD_HDR)
	$(CC) -M $(BUILD_CFLAGS) $(DEPEND_CPPFLAGS) $< -o $@

show-vars: show-vars-depend-mk
show-vars-depend-mk:
	@echo DEPEND_MK = $(DEPEND_MK)
	@echo BUILD_HDR = $(BUILD_HDR)

endif # DEPEND_MK_INCLUDED
DEPEND_MK_INCLUDED := true