#	$NetBSD: Makefile.image,v 1.4 2002/02/08 02:18:53 lukem Exp $
#
# Makefile snippet to build a tree from the provided lists,
# and make an ffs file system image from that tree
#

#
# Required variables:
#	_SRC_TOP_	top level of src tree (set by <bsd.own.mk>)
#	CRUNCHBIN	name of crunchgen(1)ed binary
#	LISTS		list file(s) to use
#	IMAGE		name of target image
#	IMAGEDEPENDS	depends for ${IMAGE}
#	IMAGEENDIAN	endianness of ${IMAGE}
#	IMAGESIZE	size of ${IMAGE}
#	MTREECONF	mtree specfiles to use to build a master specfile
#
# Optional variables:
#	MAKEFS_FLAGS	extra options to ${MAKEFS}
#	POPULATEENV	environment variables to pass to the output of
#			parselist.awk -v mode=populate
#	WORKDIR		directory to build image in to 
#

WORKDIR?=	work
WORKSPEC?=	work.spec
WORKBUILT?=	work.built

POPULATEENV+=	_SRC_TOP_=${_SRC_TOP_:Q} \
		DESTDIR=${DESTDIR:Q} \
		CURDIR=${.CURDIR:Q} \
		OBJDIR=${.OBJDIR:Q} \
		TARGDIR=${.OBJDIR}/${WORKDIR:Q} \
		CRUNCHBIN=${CRUNCHBIN:Q}

_PARSELIST=	${_SRC_TOP_}/distrib/common/parselist.awk


${WORKBUILT}: ${IMAGEDEPENDS} ${WORKSPEC} ${_PARSELIST} ${LISTS}
	@echo "Building tree into ${WORKDIR}"
	-rm -rf ${WORKDIR} ${WORKBUILT}
	mkdir -m 755 ${WORKDIR}
	${MTREE} -def ${WORKSPEC} -p ${WORKDIR}/ -UW
	awk -f ${_PARSELIST} -v mode=populate \
	    MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} \
	    ${LISTS} | ${POPULATEENV} sh -e \
	&& touch ${WORKBUILT}

${WORKSPEC}: ${MTREECONF} ${LISTS} ${_PARSELIST}
	-rm -f ${.TARGET} ${.TARGET}.tmp
	( for i in ${MTREECONF}; do	\
		cat $$i ;		\
		echo "/unset all" ;	\
	done ) >> ${.TARGET}.tmp
	awk -f ${_PARSELIST} -v mode=mtree \
	    MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} \
	    ${LISTS} >> ${.TARGET}.tmp \
	&& mv ${.TARGET}.tmp ${.TARGET}

${IMAGE}: ${WORKBUILT} ${WORKSPEC} ${IMAGEDEPENDS}
	@echo "Creating image into ${.TARGET}..."
	-rm -f ${.TARGET} ${.TARGET}.tmp
	${MAKEFS} -t ffs -B ${IMAGEENDIAN} -s ${IMAGESIZE} -F ${WORKSPEC} \
	    -N ${_SRC_TOP_}/etc -o bsize=4096,fsize=512 \
	    -o optimization=space,minfree=0,nsectors=1,ntracks=128 \
	    ${MAKEFS_FLAGS} ${.TARGET}.tmp ${WORKDIR} \
	&& mv -f ${.TARGET}.tmp ${.TARGET}

CLEANFILES+=	${IMAGE} ${IMAGE}.tmp ${WORKBUILT} ${WORKSPEC} ${WORKSPEC}.tmp

clean cleandir distclean: cleanfsimage

.PHONY: cleanfsimage

cleanfsimage:
	-rm -rf ${WORKDIR}