This file is indexed.

/usr/share/mk-freebsd/bsd.dtb.mk is in freebsd-mk 10.3~svn296373-6.

This file is owned by root:root, with mode 0o644.

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# $FreeBSD$

# Search for kernel source tree in standard places.
.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. ${.CURDIR}/../../../.. \
    ${.CURDIR}/../../../../.. /sys /usr/src/sys
.if !defined(SYSDIR) && exists(${_dir}/kern/) && exists(${_dir}/conf/kmod.mk)
SYSDIR=	${_dir}
.endif
.endfor
.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) || \
    !exists(${SYSDIR}/conf/kmod.mk)
.error Unable to locate the kernel source tree. Set SYSDIR to override.
.endif

.include "${SYSDIR}/conf/dtb.mk"

.include <bsd.sys.mk>