PKG_NAME=		# name of the package
PKG_URL=		# source url of the package e.g. a git repository
PKG_VERSION=	# version of the package to use e.g. a git commit/ref
PKG_EXT=		# extenison of this package

FETCH=$(shell which wget &> /dev/null && echo "wget" || echo "curl")
UNPACK=tar -xvf

ifneq ($(RIOTBOARD),)
include $(RIOTBOARD)/Makefile.base
include $(RIOTBOARD)/$(BOARD)/Makefile.include
endif

.PHONY: all clean patch reset

all: patch
	make -C $(CURDIR)/$(PKG_NAME)-$(PKG_VERSION)

patch: $(CURDIR)/$(PKG_NAME)-$(PKG_VERSION)/Makefile
	# Dependancy might be changed accordingly though we think the Makefile
	# will be the first thing you want to change
	#
	# Here might not happen anything besides dependancy checks

$(CURDIR)/$(PKG_NAME)-$(PKG_VERSION)/Makefile: $(CURDIR)/$(PKG_NAME)-$(PKG_VERSION)/
	# Here you apply your patch.
	cd $< && patch ../patch.txt

$(CURDIR)/$(PKG_NAME)-$(PKG_VERSION)/: $(CURDIR)/$(PKG_NAME)-$(PKG_VERSION).$(PKG_EXT)
	$(UNPACK) $<

$(CURDIR)/$(PKG_NAME)-$(PKG_VERSION).$(PKG_EXT):
	# Get PKG_VERSION of package from PKG_URL
	@$(FETCH) -O $@ $(PKG_URL)/$(PKG_NAME)-$(PKG_VERSION).$(PKG_EXT) || true

clean::
	# Reset package to checkout state.
	rm -rf $(CURDIR)/$(PKG_NAME)-$(PKG_VERSION) && \
		make $(CURDIR)/$(PKG_NAME)-$(PKG_VERSION)/Makefile

clean::
	rm -rf $(CURDIR)/$(PKG_NAME)-$(PKG_VERSION) $(CURDIR)/$(PKG_NAME)-$(PKG_VERSION).$(PKG_EXT)