63 lines
2.1 KiB
Makefile
63 lines
2.1 KiB
Makefile
# $NetBSD: bsd.kernobj.mk,v 1.7 2001/11/27 05:39:03 jmc Exp $
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# KERNSRCDIR Is the location of the top of the kernel src.
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# It defaults to ${BSDSRCDIR}/sys, but the top-level
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# Makefile.inc sets it to ${ABSTOP}/sys (ABSTOP is the
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# absolute path to the directory where the top-level
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# Makefile.inc was found.
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#
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# KERNARCHDIR Is the location of the machine dependent kernel
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# sources. It defaults to arch/${MACHINE}
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#
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# KERNCONFDIR Is where the configuration files for kernels are
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# found; default is ${KERNSRCDIR}/${KERNARCHDIR}/conf.
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#
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# KERNOBJDIR Is the kernel build directory. The kernel GENERIC for
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# instance will be compiled in ${KERNOBJDIR}/GENERIC.
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# The default value is
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# ${KERNSRCDIR}/${KERNARCHDIR}/compile
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#
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# If MAKEOBJDIRPREFIX or _SRC_TOP_OBJ is set than the value will
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# be either
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#
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# ${MAKEOBJDIRPREFIX}${KERNSRCDIR}/${KERNARCHDIR}/compile
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#
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# or
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#
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# ${_SRC_TOP_OBJ_}/sys/${KERNARCHDIR}/compile
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#
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# with MAKEOBJDIRPREFIX taking priority over _SRC_TOP_OBJ_
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#
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.include <bsd.own.mk>
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KERNSRCDIR?= ${BSDSRCDIR}/sys
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# just incase ${MACHINE} is not always correct
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KERNARCHDIR?= arch/${MACHINE}
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#
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# XXX It's ugly but it does what we need here. If making objects use the above
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# rules for trying to figure out a KERNOBJDIR.
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#
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# When coming back through here in rules (such as building kernels for
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# a release), check which vars we're using and which directory base has been
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# made in the previous obj stage to figure out which one to expose.
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#
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# All cases will fall through to the ${KERNSRCDIR}/${KERNARCHDIR}/compile case
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# if nothing ends up setting this.
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.if make(obj) || \
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(defined(MAKEOBJDIRPREFIX) && exists(${MAKEOBJDIRPREFIX}${KERNSRCDIR}/${KERNARCHDIR}/compile)) || \
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(defined(_SRC_TOP_OBJ_) && exists(${_SRC_TOP_OBJ_}/sys/${KERNARCHDIR}/compile))
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.if defined (MAKEOBJDIRPREFIX)
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KERNOBJDIR?= ${MAKEOBJDIRPREFIX}${KERNSRCDIR}/${KERNARCHDIR}/compile
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.else
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.if defined(_SRC_TOP_OBJ_) && ${_SRC_TOP_OBJ_} != ""
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KERNOBJDIR?= ${_SRC_TOP_OBJ_}/sys/${KERNARCHDIR}/compile
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.endif
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.endif
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.endif
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KERNOBJDIR?= ${KERNSRCDIR}/${KERNARCHDIR}/compile
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KERNCONFDIR?= ${KERNSRCDIR}/${KERNARCHDIR}/conf
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