crl         = crl.pem
linkname    = $(shell openssl crl -hash -noout -in $(crl)).r0
tstamp      = tstamp.t0

$(tstamp): $(crl)
	find . -type l -name *.r0 -exec rm -f '{}' ';'
	ln -s $(crl) $(linkname)
	/sbin/service httpd graceful
	-@touch $(tstamp)