#	$NetBSD: Makefile.mdset,v 1.41 2016/09/20 20:55:54 christos Exp $
#
# Makefile snippet to ${TOOL_MDSETIMAGE} file system images into kernels
#

#
# Required variables:
#	NETBSDSRCDIR	Top level of src tree (set by <bsd.own.mk>)
#	MDSETTARGETS	List of images to ${TOOL_MDSETIMAGE} into kernels,
#			containing one or more tuples of the form:
#				KERNEL	IMAGE	FILENAME
#
#			The kernel is ${TOOL_MDSETIMAGE} with ${IMAGE},
#			${STRIP}ped (after the symbols are stored in
#			${FILENAME}.symbols.gz), and gzipped into
#			${FILENAME}.gz.
#
#			If KERNEL does not contain a `/', use
#			${KERNOBJDIR}/KERNEL/netbsd as the kernel.
#
#			If FILENAME is "-", use "netbsd-${KERNEL}" as
#			the target name.  This may not be a sensible
#			name if KERNEL contains a `/'.
#
# Optional variables:
#	MDSET_RELEASEDIR		Where to install release kernels.
#
#	MDSET_NOGZIP			If defined, don't gzip any kernels.
#
#	MDSET_NOGZIP.${FILENAME}	If defined, don't gzip ${FILENAME}
#
#	MDSET_NOIMAGE.${FILENAME}	If defined, don't add ${IMAGE} to
#					${FILENAME}
#
#	MDSET_NOSTRIP			If defined, don't strip any kernels.
#
#	MDSET_NOSTRIP.${FILENAME}	If defined, don't strip ${FILENAME}
#
#	MDSET_NOSYMBOLS			If defined, don't generate *.symbols.gz
#
#	MDSET_NOSYMBOLS.${FILENAME}	If defined, don't generate
#					${FILENAME}.symbols.gz
#
#	MDSET_POST			For each kernel,
#					execute this after ${NM} / ${STRIP}.
#					Kernel is available as "${.TARGET}"
#
#	MDSET_POST.${FILENAME}		For each kernel named ${FILENAME},
#					execute this after ${NM} / ${STRIP}.
#					Kernel is available as "${.TARGET}"
#
#	MDSET_SUFFIXES.${FILENAME}	List of extra install kernel suffixes
#					and build commands to create from
#					${FILENAME} after its created by
#					${TOOL_MDSETIMAGE} ; ${NM} ; ${STRIP}:
#						SUFFIX	COMMANDVAR
#					"${.TARGET}" is "${FILENAME}.${SUFFIX}"
#					COMMANDVAR is the name of the variable
#					containing the command to build
#					${.TARGET}.
#
# Variables modified by this:
#	KERNELS			List of kernel .gz files to build
#	KERNELSYMS		List of kernel .symbol.gz files to build
#

.if !defined(_MAKEFILE_MDSET_)
_MAKEFILE_MDSET_=1

.include <bsd.kernobj.mk>

# The default is to build for all MDSETTARGETS
ALL_KERNELS?= +

.for _K _I _F in ${MDSETTARGETS}			# {
.for currentsel in ${ALL_KERNELS}			# {
.if ${currentsel} == "+" || ${_K} == ${currentsel}

_KERNEL:=${_K}			# (work around obscure issue in make(1))
.if (${_KERNEL:M*/*} != "")
_KERNNAME.${_K}.${_F}:=	${_K}
.else
_KERNNAME.${_K}.${_F}:=	${KERNOBJDIR}/${_K}/netbsd
.endif

_FILENAME:=${_F}		# (work around obscure issue in make(1))
.if ${_FILENAME} == "-"
_KERNEL.${_K}.${_F}:=	netbsd-${_K}
_FILENAME:=		${_KERNEL.${_K}.${_F}}
.else
_KERNEL.${_K}.${_F}:=	${_F}
.endif

.for _S _C in ${MDSET_SUFFIXES.${_F}}		# {
CLEANFILES+=	${_KERNEL.${_K}.${_F}}.${_S}

${_KERNEL.${_K}.${_F}}.${_S}: ${_KERNEL.${_K}.${_F}}
.if defined(${_C})
	${${_C}}
.else
	@echo "No such variable \"${_C}\""
	false
.endif

.if defined(MDSET_NOGZIP.${_FILENAME}) && defined(MDSET_NOGZIP)
KERNELS+=	${_KERNEL.${_K}.${_F}}.${_S}
.else							# {
KERNELS+=	${_KERNEL.${_K}.${_F}}.${_S}.gz

${_KERNEL.${_K}.${_F}}.${_S}.gz: ${_KERNEL.${_K}.${_F}}.${_S}
	${_MKTARGET_CREATE}
	-rm -f ${.TARGET}
	${TOOL_GZIP_N} -9c ${.ALLSRC} > ${.TARGET}
.endif							# }

.endfor							# }

.if !defined(MDSET_NOSYMBOLS.${_FILENAME}) && !defined(MDSET_NOSYMBOLS)
KERNELSYMS+=	${_KERNEL.${_K}.${_F}}.symbols.gz
.endif

.if defined(MDSET_POST.${_FILENAME})
_POST.${_KERNEL.${_K}.${_F}}:= ${MDSET_POST.${_FILENAME}}
.elif defined(MDSET_POST)
_POST.${_KERNEL.${_K}.${_F}}:= ${MDSET_POST}
.endif


CLEANFILES+=	${_KERNEL.${_K}.${_F}}

.if defined(MDSET_NOIMAGE.${_FILENAME})
${_I}=
.endif

# Darwin requires a special hack - this is documented in
# doc/HACKS, and just works around the problems described more
# fully in http://mail-index.netbsd.org/current-users/2008/06/27/msg003242.html
OPSYS!= uname -s
.if ${OPSYS} == "Darwin"
MDSETIMAGEFLAGS=
.else
MDSETIMAGEFLAGS=-v
.endif

${_KERNEL.${_K}.${_F}}: .NOTMAIN ${_KERNNAME.${_K}.${_F}} ${_I}
	${_MKTARGET_CREATE} "(from: ${.ALLSRC})"
	@rm -f ${.TARGET} ${.TARGET}.tmp ${.TARGET}.symbols.gz
	@cp ${_KERNNAME.${_K}.${_F}} ${.TARGET}.tmp
.if !defined(MDSET_NOIMAGE.${_FILENAME})
	${TOOL_MDSETIMAGE} ${MDSETIMAGEFLAGS} ${.TARGET}.tmp ${_I}
.endif
.if !defined(MDSET_NOSYMBOLS.${_FILENAME}) && !defined(MDSET_NOSYMBOLS)
	${NM} ${.TARGET}.tmp | ${TOOL_GZIP_N} -9 > ${.TARGET}.symbols.gz
.endif
.if !defined(MDSET_NOSTRIP.${_FILENAME}) && !defined(MDSET_NOSTRIP)
	${STRIP} -R .eh_frame -R .eh_frame_hdr -R .comment -R .ident ${MDSET_STRIPSECTIONS} ${.TARGET}.tmp
.endif
	@mv ${.TARGET}.tmp ${.TARGET}
.if defined(MDSET_POST.${_FILENAME}) || defined(MDSET_POST)
	${_POST.${.TARGET}}
.endif

.if defined(MDSET_NOGZIP.${_FILENAME}) || defined(MDSET_NOGZIP)
KERNELS+=	${_KERNEL.${_K}.${_F}}
.else							# {
KERNELS+=	${_KERNEL.${_K}.${_F}}.gz

${_KERNEL.${_K}.${_F}}.gz: ${_KERNEL.${_K}.${_F}}
	${_MKTARGET_CREATE}
	-rm -f ${.TARGET}
	${TOOL_GZIP_N} -9c ${.ALLSRC} > ${.TARGET}
.endif							# }

.endif
.endfor							# }
.endfor							# }

CLEANFILES+=	${KERNELS} ${KERNELSYMS}

realall: ${KERNELS}

.if defined(MDSET_RELEASEDIR)
release:: check_RELEASEDIR .WAIT ${KERNELS}
	test -z "${KERNELS}" || \
	${RELEASE_INSTALL} ${KERNELS} ${KERNELSYMS} \
	    ${RELEASEDIR}/${RELEASEMACHINEDIR}/${MDSET_RELEASEDIR}
.endif


.endif	# _MAKEFILE_MDSET_