#
# Project Home:
# ============
#   https://tukaani.org/xz/
#
# Downloads:
# =========
#   https://tukaani.org/xz/xz-5.4.2.tar.xz
#
# Git:
# ======
#   https://git.tukaani.org/?p=xz.git;a=summary
#   git clone https://git.tukaani.org/xz.git
#

url         = https://git.tukaani.org

repo_name   = xz

versions    = 5.2.3 5.2.4 5.2.5 5.2.7 5.2.11 5.4.2 5.6.3
suffix      = tar.xz

TAGS        = $(versions)

git_repo    = .git_clone
tarballs    = $(addsuffix .$(suffix), $(addprefix $(repo_name)-, $(versions)))
sha1s       = $(addsuffix .sha1sum, $(tarballs))

TARGETS = repository_clean

all: $(TARGETS)

.PHONY: downloads_clean repository_clean

$(git_repo):
	@echo -e "\n======= Clone $(repo_name).git repository =======\n"
	@rm -rf $(repo_name)
	@git clone $(url)/$(repo_name).git $(repo_name)
	@touch $@


$(tarballs): $(git_repo)
	@for version in $(TAGS) ; do \
	  tag=`echo $$version`; \
	  if [ ! -f $(repo_name)-$$version.$(suffix) ]; then \
	    echo -e "\n======= Creating '$(repo_name)-$$version.$(suffix)' snapshot =======" ; \
	    ( cd $(repo_name) && \
	      git archive --format=tar --prefix=$(repo_name)-$$version/ v$$tag | \
	      xz >../$(repo_name)-$$version.$(suffix) ) ; \
	    tar xJf $(repo_name)-$$version.$(suffix) ; \
	    ( cd $(repo_name)-$$version ; ./autogen.sh ; rm -rf autom4te.cache .gitignore ) ; \
	    tar cJf $(repo_name)-$$version.$(suffix) $(repo_name)-$$version ; \
	    rm -rf $(repo_name)-$$version ; \
	  fi ; \
	done

$(sha1s): %.$(suffix).sha1sum : %.$(suffix)
	@for tarball in $< ; do \
	  echo -e "\n======= Calculation the '$$tarball' sha1sum =======" ; \
	  sha1sum --binary $$tarball > $$tarball.sha1sum ; \
	done

repository_clean: $(sha1s)
	@echo -e "\n======= Remove cloned $(repo_name).git repository =======\n"
	@rm -rf $(git_repo) $(repo_name)

downloads_clean:
	@rm -rf $(tarballs) $(sha1s)
	@rm -rf $(git_repo) $(repo_name)