XERCES_SERIES = 3
VERSION=3.1.1
TARFILE=xerces-c-$(VERSION).tar.gz
PWD := $(shell pwd)
export XERCESCROOT=$(PWD)/xerces-c-$(VERSION)

all: prod_link

prod_link: $(XERCESCROOT)/.make_install_done
	   test -L prod || ln -s xerces-c-$(VERSION) prod # will not overwrite existing link

$(XERCESCROOT)/.make_install_done: $(XERCESCROOT)/.make_done 
	$(MAKE) -C$(XERCESCROOT) install
	date > $@

$(XERCESCROOT)/.make_done: $(XERCESCROOT)/.configure_done 
	$(MAKE) -C$(XERCESCROOT)
	date > $@

$(XERCESCROOT)/.untar_done: $(TARFILE)
	tar zxf $(TARFILE)
	date > $@

$(XERCESCROOT)/.configure_done: $(XERCESCROOT)/.untar_done
	cd $(XERCESCROOT); ./configure --prefix=$(XERCESCROOT)
	date > $@

$(TARFILE):
	wget http://www.apache.org/dist/xerces/c/$(XERCES_SERIES)/sources/$(TARFILE)