--- a/common/autoconf/flags.m4	Fri Jul 08 12:17:09 2016 -0700
+++ b/common/autoconf/flags.m4	Sun Jul 10 22:00:03 2016 +0100
@@ -713,6 +713,7 @@
     FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [[$]$2CXXSTD_CXXFLAG -Werror],
     						 IF_FALSE: [$2CXXSTD_CXXFLAG=""])
     $2CXXFLAGS_JDK="${$2CXXFLAGS_JDK} ${$2CXXSTD_CXXFLAG}"
+    $2JVM_CFLAGS="${$2JVM_CFLAGS} ${$2CXXSTD_CXXFLAG}"
     AC_SUBST([$2CXXSTD_CXXFLAG])
   fi
   if test "x$OPENJDK_TARGET_OS" = xsolaris; then
@@ -768,7 +769,7 @@
         $2CFLAGS_JDK="${$2CFLAGS_JDK} -fno-strict-aliasing"
         ;;
     esac
-    TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: 6, PREFIX: $2, IF_AT_LEAST: FLAGS_SETUP_GCC6_COMPILER_FLAGS)
+    TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: 6, PREFIX: $2, IF_AT_LEAST: FLAGS_SETUP_GCC6_COMPILER_FLAGS($2))
   elif test "x$TOOLCHAIN_TYPE" = xclang; then
     $2JVM_CFLAGS="[$]$2JVM_CFLAGS -D_GNU_SOURCE"
 
@@ -1447,19 +1448,24 @@
   AC_SUBST(CFLAGS_WARNINGS_ARE_ERRORS)
 ])
 
-AC_DEFUN_ONCE([FLAGS_SETUP_GCC6_COMPILER_FLAGS],
+# FLAGS_SETUP_GCC6_COMPILER_FLAGS([PREFIX])
+# Arguments:
+# $1 - Optional prefix for each variable defined.
+AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS],
 [
   # These flags are required for GCC 6 builds as undefined behaviour in OpenJDK code
   # runs afoul of the more aggressive versions of these optimisations.
   # Notably, value range propagation now assumes that the this pointer of C++
   # member functions is non-null.
-  NO_NULL_POINTER_CHECK_CFLAG="-fno-delete-null-pointer-checks"
-  FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_NULL_POINTER_CHECK_CFLAG -Werror],
-  					     IF_FALSE: [NO_NULL_POINTER_CHECK_CFLAG=""])
-  AC_SUBST([NO_NULL_POINTER_CHECK_CFLAG])
+  NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks"
+  dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation
+  dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror],
+  dnl					     IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""])
   NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse"
-  FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror],
-  					     IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""])
-  CFLAGS_JDK="${CFLAGS_JDK} ${NO_NULL_POINTER_CHECK_CFLAG} ${NO_LIFETIME_DSE_CFLAG}"
-  AC_SUBST([NO_LIFETIME_DSE_CFLAG])
+  dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation
+  dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror],
+  dnl					     IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""])
+  AC_MSG_NOTICE([GCC >= 6 detected; adding ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} and ${NO_LIFETIME_DSE_CFLAG}])
+  $1CFLAGS_JDK="[$]$1CFLAGS_JDK ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}"
+  $1JVM_CFLAGS="[$]$1JVM_CFLAGS ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}"
 ])