make .o and .lo and program files depend on Makefile and config.mk to rebuild on reconfigure
diff --git a/config.subr b/config.subr
index 920492b..1c0ccd7 100644
--- a/config.subr
+++ b/config.subr
@@ -3,6 +3,7 @@ set -e
o_rule() {
"$CC" $CPPFLAGS $CFLAGS -M "$1" || { echo "$1" | sed -e 's/^\(.*\)\.c$/\1.o: \1.c/'; }
+ echo "$1" | sed -e 's/^\(.*\)\.c$/\1.o: Makefile config.mk/'
}
lo_rule() {