rk: Makefile set default CROSS_COMPILE when ARCH is arm64

Signed-off-by: Huang, Tao <huangtao@rock-chips.com>

diff --git a/Makefile b/Makefile
index 3efa4d23ccb307f760c24e988a54092ae81724d9..6a56053e1b2a6c9acfa188a6401a4cf3db9ba5de 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -196,9 +196,16 @@ SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
 ARCH           ?= arm
 ARCH           ?= $(SUBARCH)
+ifeq ($(ARCH),arm64)
+ifneq ($(wildcard ../prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9),)
+CROSS_COMPILE  ?= ../prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-
+endif
+endif
+ifeq ($(ARCH),arm)
 ifneq ($(wildcard ../prebuilts/gcc/linux-x86/arm/arm-eabi-4.6),)
 CROSS_COMPILE  ?= ../prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-
 endif
+endif
 CROSS_COMPILE  ?= $(CONFIG_CROSS_COMPILE:"%"=%)
 
 # Architecture as present in compile.h