--- a/common/autoconf/platform.m4	Wed Aug 31 09:22:53 2016 -0700
+++ b/common/autoconf/platform.m4	Thu Sep 01 10:29:37 2016 +0200
@@ -454,6 +454,8 @@
     HOTSPOT_$1_CPU_DEFINE=S390
   elif test "x$OPENJDK_$1_CPU" = xs390x; then
     HOTSPOT_$1_CPU_DEFINE=S390
+  elif test "x$OPENJDK_$1_CPU" != x; then
+    HOTSPOT_$1_CPU_DEFINE=$(echo $OPENJDK_$1_CPU | tr a-z A-Z)
   fi
   AC_SUBST(HOTSPOT_$1_CPU_DEFINE)