===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/share/mk/bsd.regress.mk,v
retrieving revision 1.15
retrieving revision 1.16
diff -u -r1.15 -r1.16
--- src/share/mk/bsd.regress.mk	2018/09/26 09:34:23	1.15
+++ src/share/mk/bsd.regress.mk	2018/10/05 11:15:29	1.16
@@ -1,4 +1,4 @@
-# $OpenBSD: bsd.regress.mk,v 1.15 2018/09/26 09:34:23 bluhm Exp $
+# $OpenBSD: bsd.regress.mk,v 1.16 2018/10/05 11:15:29 bluhm Exp $
 # Documented in bsd.regress.mk(5)
 
 # No man pages for regression tests.
@@ -68,11 +68,24 @@
 .endif
 
 REGRESS_SETUP?=
+REGRESS_SETUP_ONCE?=
 REGRESS_CLEANUP?=
+
 .if !empty(REGRESS_SETUP)
 ${REGRESS_TARGETS}: ${REGRESS_SETUP}
 .endif
 
+.if !empty(REGRESS_SETUP_ONCE)
+CLEANFILES+=${REGRESS_SETUP_ONCE:S/^/stamp-/}
+${REGRESS_TARGETS}: ${REGRESS_SETUP_ONCE:S/^/stamp-/}
+${REGRESS_SETUP_ONCE:S/^/stamp-/}: .SILENT
+	${MAKE} -C ${.CURDIR} ${@:S/^stamp-//}
+	date >$@
+REGRESS_CLEANUP+=${REGRESS_SETUP_ONCE:S/^/cleanup-stamp-/}
+${REGRESS_SETUP_ONCE:S/^/cleanup-stamp-/}: .SILENT
+	rm -f ${@:S/^cleanup-//}
+.endif
+
 regress: .SILENT
 .if ! ${REGRESS_LOG:M/*}
 	echo =========================================================
@@ -80,6 +93,9 @@
 	echo It currently points to: ${REGRESS_LOG}
 	echo =========================================================
 	exit 1
+.endif
+.if !empty(REGRESS_SETUP_ONCE)
+	rm -f ${REGRESS_SETUP_ONCE:S/^/stamp-/}
 .endif
 .for RT in ${REGRESS_TARGETS} ${REGRESS_CLEANUP}
 .  if ${REGRESS_SKIP_TARGETS:M${RT}}