# HOST_ARCH = ia64 or IA64 for IA64 build\r
# HOST_ARCH = Arm or ARM for ARM build\r
#\r
-# Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>\r
+# Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>\r
# This program and the accompanying materials\r
# are licensed and made available under the terms and conditions of the BSD License\r
# which accompanies this distribution. The full text of the license may be found at\r
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
-HOST_ARCH ?= IA32\r
+ifndef HOST_ARCH\r
+ #\r
+ # If HOST_ARCH is not defined, then we use 'uname -m' to attempt\r
+ # try to figure out the appropriate HOST_ARCH.\r
+ #\r
+ uname_m = $(shell uname -m)\r
+ $(info Attempting to detect HOST_ARCH from 'uname -m': $(uname_m))\r
+ ifneq (,$(strip $(filter $(uname_m), x86_64 amd64)))\r
+ HOST_ARCH=X64\r
+ endif\r
+ ifeq ($(patsubst i%86,IA32,$(uname_m)),IA32)\r
+ HOST_ARCH=IA32\r
+ endif\r
+ ifneq (,$(findstring aarch64,$(uname_m)))\r
+ HOST_ARCH=AARCH64\r
+ endif\r
+ ifneq (,$(findstring arm,$(uname_m)))\r
+ HOST_ARCH=ARM\r
+ endif\r
+ ifndef HOST_ARCH\r
+ $(info Could not detected HOST_ARCH from uname results)\r
+ $(error HOST_ARCH is not defined!)\r
+ endif\r
+ $(info Detected HOST_ARCH of $(HOST_ARCH) using uname.)\r
+endif\r
\r
CYGWIN:=$(findstring CYGWIN, $(shell uname -s))\r
LINUX:=$(findstring Linux, $(shell uname -s))\r