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#
# Project Home:
# ============
# https://www.gnu.org/software/m4
#
# Downloads:
# =========
# https://ftp.gnu.org/gnu/m4
#

url         = https://ftp.gnu.org/gnu/m4

versions    = 1.4.17 1.4.18 1.4.19 1.4.20 1.4.21

pkgname     = m4
suffix      = tar.xz

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

all: $(tarballs) $(sha1s)

.PHONY: downloads_clean

$(tarballs):
	@echo -e "\n======= Downloading source tarballs =======\n"
	@for tarball in $(tarballs) ; do \
	  wget -N $(url)/$$tarball ; \
	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)