60a5d89732
improve support for multi-arch and cross-arch builds, by adding a suffix to the kernel config file and build_directory. (cross builds not clean yet, a cross-built kernel boots but fails when starting /sbin/init)
62 lines
2.0 KiB
Makefile
62 lines
2.0 KiB
Makefile
# $FreeBSD$
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#
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# Makefile for building PICOBSD kernels and running crunchgen
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#
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# Needs SRC pointing to the source tree,
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# MY_TREE ponting to my tree
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# BUILDDIR pointing to the build directory
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# PICO_OBJ pointing to the object directory
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# When building a kernel, also need ${name} from the environment
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# and CONFIG may indicate an alternate config program
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BINMAKE?=make
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SRC?=/usr/src
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CONFIG?=config
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MODULES?=-DNO_MODULES # do not build them as a default
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KERNCONF ?= PICOBSD
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# caller will set MODULES to empty if modules are needed.
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# Indeed, it can be used to specify other Makefile options as well.
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# These 3 variables determine where the kernel is built.
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# If config were smart enough, we could place the config
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# file in some other place than ${SRC}/sys/${TARGET_ARCH}/conf, but
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# at the moment (Oct.2001) this is not possible yet.
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CONF=${SRC}/sys/${TARGET_ARCH}/conf
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#CONF=${BUILDDIR}/conf # XXX does not work yet
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CONFFILE=PICOBSD-${name}
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# We can, however, compile the kernel somewhere else
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#COMPILE=${CONF}/../compile/${CONFFILE}
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COMPILE=${BUILDDIR}/${CONFFILE}
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KERNFILE=${COMPILE}/kernel
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${BUILDDIR}/kernel: ${KERNFILE}
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cp -p ${.OODATE} ${.TARGET}
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strip ${.TARGET}
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strip --remove-section=.note --remove-section=.comment ${.TARGET}
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${KERNFILE}: ${COMPILE} do_a_make_in_the_kernel_directory_anyways
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do_a_make_in_the_kernel_directory_anyways:
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(cd ${COMPILE}; ${BINMAKE} KERNEL=kernel ${MODULES} )
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${COMPILE}: ${CONF}/${CONFFILE}
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(cd ${CONF}; ${CONFIG} -d ${COMPILE} ${CONFFILE}; \
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cd ${COMPILE}; ${BINMAKE} KERNEL=kernel ${MODULES} depend )
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${CONF}/${CONFFILE}: ${KERNCONF}
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# -mkdir -p ${CONF} # XXX not needed yet.
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cp ${.OODATE} ${.TARGET}
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[ -f PICOBSD.hints ] && cp PICOBSD.hints ${CONF}/
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# This part creates crunch1.conf and crunch.mk from crunch.conf
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${BUILDDIR}/crunch.mk: ${BUILDDIR}/crunch1.conf
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-(cd ${BUILDDIR}/crunch ; \
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crunchgen -p ${PICO_OBJ} -o -m ${.TARGET} ${.OODATE} )
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${BUILDDIR}/crunch1.conf: ${MY_TREE}/crunch.conf
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(cd ${BUILDDIR}/crunch ; cat ${.OODATE} | \
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sed -e "s@/usr/src@${SRC}@" -e "s+@__CWD__@+${MY_TREE}+" > ${.TARGET} )
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