PREFIX ?= /usr/local
SHAREDIR ?= ${PREFIX}/share
MANDIR ?= ${SHAREDIR}/man
EXMANDIR ?= ${SHAREDIR}/exman

SYSTEMS += FreeBSD
SYSTEMS += Linux
SYSTEMS += NetBSD
SYSTEMS += OpenBSD
SYSTEMS += POSIX
SYSTEMS += macOS

all: exman
.for system in ${SYSTEMS}
	${MAKE} -C ${system} ${.TARGET}
.endfor

.SUFFIXES: .in

.in:
	sed 's|%%EXMANDIR%%|${EXMANDIR}|g' ${.IMPSRC} > ${.TARGET}
	chmod a+x ${.TARGET}

clean:
	rm -f exman
.for system in ${SYSTEMS}
	${MAKE} -C ${system} ${.TARGET}
.endfor

install: exman exman.1
	install -d ${DESTDIR}${PREFIX}/bin ${DESTDIR}${MANDIR}/man1
	install exman ${DESTDIR}${PREFIX}/bin
	install -m 644 exman.1 ${DESTDIR}${MANDIR}/man1
.for system in ${SYSTEMS}
	${MAKE} -C ${system} ${.TARGET}
.endfor

uninstall:
	rm -f ${DESTDIR}${PREFIX}/bin/exman ${DESTDIR}${MANDIR}/man1/exman.1
.for system in ${SYSTEMS}
	${MAKE} -C ${system} ${.TARGET}
.endfor

version:
	@grep '^VERSION =' */Makefile | awk '{ sum += $$3 } END { print sum }'