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-rw-r--r--share/mk/Makefile1
-rw-r--r--share/mk/bsd.dtb.mk17
2 files changed, 18 insertions, 0 deletions
diff --git a/share/mk/Makefile b/share/mk/Makefile
index 75b45e8..d0234d8 100644
--- a/share/mk/Makefile
+++ b/share/mk/Makefile
@@ -11,6 +11,7 @@ FILES= \
bsd.crunchgen.mk \
bsd.dep.mk \
bsd.doc.mk \
+ bsd.dtb.mk \
bsd.endian.mk \
bsd.files.mk \
bsd.incs.mk \
diff --git a/share/mk/bsd.dtb.mk b/share/mk/bsd.dtb.mk
new file mode 100644
index 0000000..24e6930
--- /dev/null
+++ b/share/mk/bsd.dtb.mk
@@ -0,0 +1,17 @@
+# $FreeBSD$
+
+# 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>
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