diff -r 320af913b4de -r daa47f8cf745 common/autoconf/generated-configure.sh
--- a/common/autoconf/generated-configure.sh	Sat Nov 09 20:15:27 2019 +0800
+++ b/common/autoconf/generated-configure.sh	Sat Nov 09 20:29:44 2019 +0800
@@ -3650,7 +3650,7 @@
 
 
 #
-# Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -4385,7 +4385,7 @@
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1556533111
+DATE_WHEN_GENERATED=1565358475
 
 ###############################################################################
 #
@@ -41504,16 +41504,8 @@
     CFLAGS_JDK="${CFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
     CXXFLAGS_JDK="${CXXFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
   elif test "x$TOOLCHAIN_TYPE" = xgcc; then
-    case $OPENJDK_TARGET_CPU_ARCH in
-    x86 )
-      LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS -fstack-protector"
-      LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS -fstack-protector"
-      ;;
-    x86_64 )
-      LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS -fstack-protector"
-      LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS -fstack-protector"
-      ;;
-    esac
+    LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS -fstack-protector"
+    LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS -fstack-protector"
     if test "x$OPENJDK_TARGET_OS" != xmacosx; then
       LDFLAGS_JDK="$LDFLAGS_JDK -Wl,-z,relro"
       LEGACY_EXTRA_LDFLAGS="$LEGACY_EXTRA_LDFLAGS -Wl,-z,relro"
@@ -41624,7 +41616,7 @@
   if test "x$TOOLCHAIN_TYPE" = xgcc; then
     # these options are used for both C and C++ compiles
     CCXXFLAGS_JDK="$CCXXFLAGS $CCXXFLAGS_JDK -Wall -Wno-parentheses -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2 \
-        -pipe -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE"
+        -pipe -fstack-protector -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE"
     case $OPENJDK_TARGET_CPU_ARCH in
       arm )
         # on arm we don't prevent gcc to omit frame pointer but do prevent strict aliasing
@@ -41633,10 +41625,6 @@
       ppc )
         # on ppc we don't prevent gcc to omit frame pointer nor strict-aliasing
         ;;
-      x86 )
-        CCXXFLAGS_JDK="$CCXXFLAGS_JDK -fno-omit-frame-pointer -fstack-protector"
-        CFLAGS_JDK="${CFLAGS_JDK} -fno-strict-aliasing -fstack-protector"
-        ;;
       * )
         CCXXFLAGS_JDK="$CCXXFLAGS_JDK -fno-omit-frame-pointer"
         CFLAGS_JDK="${CFLAGS_JDK} -fno-strict-aliasing"
@@ -52062,8 +52050,11 @@
     NUM_CORES=`/usr/sbin/system_profiler -detailLevel full SPHardwareDataType | grep 'Cores' | awk  '{print $5}'`
     FOUND_CORES=yes
   elif test "x$OPENJDK_BUILD_OS" = xaix ; then
-    NUM_CORES=`/usr/sbin/prtconf | grep "^Number Of Processors" | awk '{ print $4 }'`
-    FOUND_CORES=yes
+    NUM_LCPU=`lparstat -m 2> /dev/null | $GREP -o "lcpu=[0-9]*" | $CUT -d "=" -f 2`
+    if test -n "$NUM_LCPU"; then
+      NUM_CORES=$NUM_LCPU
+      FOUND_CORES=yes
+    fi
   elif test -n "$NUMBER_OF_PROCESSORS"; then
     # On windows, look in the env
     NUM_CORES=$NUMBER_OF_PROCESSORS