CURL ?= curl
TAR ?= tar

SYSTEMS += freebsd
SYSTEMS += linux
SYSTEMS += netbsd
SYSTEMS += openbsd
SYSTEMS += posix

all: ${SYSTEMS}

.SUFFIXES: .tar .url

.url.tar:
	${CURL} -f -o $@ "$$(cat $<)"

.tar:
	mkdir -p $@
	${TAR} -x -f $< -C $@ --strip-components ${STRIP.$@} ${FILES.$@}

FILES.freebsd = ./usr/share/man/
FILES.netbsd = ./usr/share/man/
FILES.openbsd = ./usr/share/man/

STRIP.freebsd = 4
STRIP.linux = 1
STRIP.netbsd = 4
STRIP.openbsd = 4
STRIP.posix = 1

clean:
	rm -fr ${SYSTEMS} ${SYSTEMS:=.tar}