--- configure.ac 2016-05-27 14:00:25.248388226 +0200 +++ configure.ac 2016-05-27 14:01:28.228943416 +0200 @@ -214,7 +214,8 @@ AM_CONDITIONAL(BUILD_DOCS, [test "x$buil # Used by the udev rules so we can use callouts during testing without # installing everything first. Default is the empty string so the installed # rule will use udev's default path. Override is in udev/Makefile.am -AC_SUBST(UDEV_TEST_PATH, "") +UDEV_TEST_PATH="${UDEV_DIR}/" +AC_SUBST(UDEV_TEST_PATH) AC_PATH_PROG(SED, [sed]) AC_CONFIG_FILES([Makefile