--- a/make/autoconf/flags-cflags.m4	Mon Oct 29 11:31:25 2018 -0700
+++ b/make/autoconf/flags-cflags.m4	Tue Oct 30 10:39:19 2018 -0400
@@ -747,10 +747,6 @@
       # -Wno-psabi to get rid of annoying "note: the mangling of 'va_list' has changed in GCC 4.4"
       $1_CFLAGS_CPU="-fsigned-char -Wno-psabi $ARM_ARCH_TYPE_FLAGS $ARM_FLOAT_TYPE_FLAGS -DJDK_ARCH_ABI_PROP_NAME='\"\$(JDK_ARCH_ABI_PROP_NAME)\"'"
       $1_CFLAGS_CPU_JVM="-DARM"
-    elif test "x$FLAGS_CPU" = xaarch64; then
-      if test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then
-        $1_CFLAGS_CPU_JVM="-fsigned-char -DARM"
-      fi
     elif test "x$FLAGS_CPU_ARCH" = xppc; then
       $1_CFLAGS_CPU_JVM="-minsert-sched-nops=regroup_exact -mno-multiple -mno-string"
       if test "x$FLAGS_CPU" = xppc64; then