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-rw-r--r--share/mk/src.sys.env.mk5
1 files changed, 5 insertions, 0 deletions
diff --git a/share/mk/src.sys.env.mk b/share/mk/src.sys.env.mk
index 0a7f8ea800cc..c857972e47c4 100644
--- a/share/mk/src.sys.env.mk
+++ b/share/mk/src.sys.env.mk
@@ -22,6 +22,11 @@ RELTOP?= ${RELDIR:C,[^/]+,..,g}
RELOBJTOP?= ${RELTOP}
RELSRCTOP?= ${RELTOP}
+.if !defined(OS_REVISION)
+OS_REVISION!=eval `sh ${SRCTOP}/sys/conf/newvers.sh -V REVISION` && echo $$REVISION || echo
+.export OS_REVISION
+.endif
+
# site customizations that do not depend on anything!
# Save MAKEOBJDIRPREFIX and don't let src-env.conf modify it.