48e733eef9
These facilitate customizing the build with minimal churn. Reviewed by: stevek Sponsored by: Juniper Networks, Inc. Differential Revision: https://reviews.freebsd.org/D37592
19 lines
557 B
Makefile
19 lines
557 B
Makefile
# $FreeBSD$
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.-include <local.sysdir.mk>
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# Search for kernel source tree in standard places.
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.if !defined(SYSDIR)
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.for _dir in ${SRCTOP:D${SRCTOP}/sys} \
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${.CURDIR}/../.. ${.CURDIR}/../../.. ${.CURDIR}/../../../.. \
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${.CURDIR}/../../../../.. /sys /usr/src/sys
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.if !defined(SYSDIR) && exists(${_dir}/kern/) && exists(${_dir}/conf/kmod.mk)
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SYSDIR= ${_dir:tA}
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.endif
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.endfor
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.endif
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.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) || \
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!exists(${SYSDIR}/conf/kmod.mk)
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.error Unable to locate the kernel source tree. Set SYSDIR to override.
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.endif
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