Index: head/share/mk/local.autodep.mk
===================================================================
--- head/share/mk/local.autodep.mk	(revision 288965)
+++ head/share/mk/local.autodep.mk	(revision 288966)
@@ -1,25 +1,31 @@
 # $FreeBSD$
 
 .if ${.MAKE.DEPENDFILE:M*.${MACHINE}} == ""
 # by default only MACHINE0 does updates
 UPDATE_DEPENDFILE_MACHINE?= ${MACHINE0}
 .if ${MACHINE} != ${UPDATE_DEPENDFILE_MACHINE}
 UPDATE_DEPENDFILE= no
 .endif
 .endif
 
 CFLAGS+= ${CFLAGS_LAST}
 CXXFLAGS+= ${CXXFLAGS_LAST}
 LDFLAGS+= ${LDFLAGS_LAST}
 
 CLEANFILES+= .depend
 
+.for h in ${SRCS:M*.h}
+.if target($h)
+buildfiles: $h
+.endif
+.endfor
+
 # handy for debugging
 .SUFFIXES:  .S .c .cc .cpp .cpp-out
 
 
 .S.cpp-out .c.cpp-out: .NOMETA
 	@${CC} -E ${CFLAGS} ${.IMPSRC} | grep -v '^[[:space:]]*$$'
 
 .cc.cpp-out: .NOMETA
 	@${CXX} -E ${CXXFLAGS} ${.IMPSRC} | grep -v '^[[:space:]]*$$'