Radix cross Linux 3pp sources

#
# Project Home:
# ============
#   https://github.com/linux-ras/sysfsutils
#
# GitHub:
# ======
#   https://github.com/linux-ras/sysfsutils.git
#

url        = https://github.com/linux-ras

repo_name  = sysfsutils
pkg_name   = sysfsutils

#
# NOTE:
# ====
#   version 2.1.0 is deprecated (released at 23 Aug 2006)
#
versions   = 2.1.0
versions  += 2.1.1

suffix     = tar.xz

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 $(versions) ; do \
	  if [ "x$$version" = "x2.1.0" ] ; then \
	    tag=sysfsutils-`echo $$version | sed 's,\.,\_,g'` ; \
	  else \
	    tag=v`echo $$version` ; \
	  fi ; \
	  if [ ! -f $(pkg_name)-$$version.$(suffix) ]; then \
	    echo -e "\n======= Creating '$(repo_name)-$$version.$(suffix)' snapshot =======" ; \
	    ( cd $(repo_name) && \
	      git archive --format=tar --prefix=$(pkg_name)-$$version/ $$tag | \
	      xz >../$(pkg_name)-$$version.$(suffix) ) ; \
	    tar xJf $(pkg_name)-$$version.$(suffix) ; \
	    ( cd $(pkg_name)-$$version ; \
	      if [ "x$$version" = "x2.1.0" ] ; then \
	        chmod a-x INSTALL ; chmod a+x config.{guess,sub} ; \
	      else \
	        sed -i '/^AC_HEADER_STDC/d' configure.ac ; \
	        ./autogen ; \
	        rm -rf autom4te.cache .git* .travis.yml *~ ; \
	      fi ; \
	    ) ; \
	    tar cJf $(pkg_name)-$$version.$(suffix) $(pkg_name)-$$version ; \
	    rm -rf $(pkg_name)-$$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)