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#
# Project Home:
# ============
# https://www.zlib.net/
#
# Downloads:
# =========
# https://zlib.net/
#

url         = https://zlib.net

versions    = 1.2.13
current     = 1.3.1

pkgname     = zlib
suffix      = tar.xz

tarballs    = $(addsuffix .$(suffix), $(addprefix $(pkgname)-, $(versions) $(current)))
sha1s       = $(addsuffix .sha1sum, $(tarballs))


all: $(tarballs) $(sha1s)

.PHONY: downloads_clean

$(tarballs):
	@echo -e "\n======= Downloading source tarballs =======\n"
	@for tarball in $(tarballs) ; do \
	  version=`echo $${tarball} | sed 's/\([a-zA-Z-]*\)\(.*\)\(.tar.xz\)/\2/'` ; \
	  if [ "$${version}" = "$(current)" ] ; then \
	    wget -N $(url)/$${tarball} ; \
	  else \
	    if [ ! -f "$${tarball}" -a ! -f "$${tarball%.${suffix}}.tar.gz" ] ; then \
	      wget $(url)/fossils/$${tarball%.${suffix}}.tar.gz ; \
	      tar -xzf $${tarball%.${suffix}}.tar.gz ; \
	      tar -cJf $(pkgname)-$${version}.$(suffix) $(pkgname)-$${version} ; \
	      rm -rf $(pkgname)-$${version} $${tarball%.${suffix}}.tar.gz ; \
	    fi ; \
	  fi ; \
	done

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

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