--- a/make/autoconf/basics.m4	Tue Sep 18 21:47:14 2018 -0700
+++ b/make/autoconf/basics.m4	Thu Sep 20 20:54:19 2018 +0200
@@ -862,7 +862,7 @@
     # Create a default ./build/target-variant-debuglevel output root.
     if test "x${CONF_NAME}" = x; then
       AC_MSG_RESULT([in default location])
-      CONF_NAME="${OPENJDK_TARGET_OS}-${OPENJDK_TARGET_CPU}-${JDK_VARIANT}-${JVM_VARIANTS_WITH_AND}-${DEBUG_LEVEL}"
+      CONF_NAME="${OPENJDK_TARGET_OS}-${OPENJDK_TARGET_CPU}-${JVM_VARIANTS_WITH_AND}-${DEBUG_LEVEL}"
     else
       AC_MSG_RESULT([in build directory with custom name])
     fi