--- a/Makefile.am
+++ b/Makefile.am
@@ -35,6 +35,9 @@
 distcheck-light:
 	$(MAKE) $(AM_MAKEFLAGS) DISTCHECK_FLAGS="$(DISTCHECK_LIGHT_FLAGS)" distcheck
 
+m4dir                       = m4
+dist_m4_DATA                = m4/ac-path-kernel-source.m4
+
 # ----------------------------------------------------------------------
 
 setup-driver.sh: data2setup.sh setup.data