Re: How to adding pathes to dependencies in rules of `.d` files

Updated. Accept a path parameter on command line from the user.

# Makefile for top dir

# $(call version_number,1.2.3)
# major.minor.patch
# libtool manual 4.2: -version-number
define version_number
	$(MAKE) -C $@ [email protected].$(word 1,$(subst ., ,$(1)))
	@ cp $(OBJDIR)/$@/$@ $(OBJDIR)/$@/[email protected].$(1)
	@ cd $(OBJDIR)/$@; ln -f -s $(OBJDIR)/$@/[email protected].$(1) $(OBJDIR)/$@/[email protected].$(word 1,$(subst ., ,$(1))); cd ..
	@ cd $(OBJDIR)/$@; ln -f -s $(OBJDIR)/$@/[email protected].$(1) $(OBJDIR)/$@/[email protected]; cd ..
endef

# make BUILD_DIR=build
ifndef BUILD_DIR
export OBJDIR = $(dir $(abspath $(lastword $(MAKEFILE_LIST))))/build
else
export OBJDIR = $(abspath $(BUILD_DIR))
endif

SUBDIRS = main foo

all : $(SUBDIRS)
install : $(SUBDIRS)

main : foo
main : ; $(MAKE) -C $@
foo : ; $(call version_number,1.2.3)

# make DESTDIR=~/foo install
install :
	install -d "$(DESTDIR)/usr/local/bin"
	install -d "$(DESTDIR)/usr/local/lib"
	install -m 0755 $(OBJDIR)/main/main "$(DESTDIR)/usr/local/bin"
	install -m 0755 $(OBJDIR)/foo/*.so* "$(DESTDIR)/usr/local/lib"

clean : ; -rm -fr $(OBJDIR)

.PHONY : $(SUBDIRS) all install clean