From 5cd8eac6685a204fee3a4ad71abc5798aead66be Mon Sep 17 00:00:00 2001
From: Caesar Wang <wxt@rock-chips.com>
Date: Wed, 3 Nov 2021 11:15:19 +0800
Subject: [PATCH] device/rockchip: support COMPILE_CROSS setting for kernel

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Change-Id: Ifa8d71320e0bb061f9f15b8045d24695227a686a
---
 common/build.sh | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/common/build.sh b/common/build.sh
index 3d3be24..41372af 100755
--- a/common/build.sh
+++ b/common/build.sh
@@ -355,6 +355,26 @@ function build_check_power_domain(){
 	rm -f $dump_kernel_dtb_file
 }
 
+function build_check_cross_compile(){
+	ARCH=${RK_KERNEL_ARCH:-${RK_ARCH}}
+	case $ARCH in
+	arm|armhf)
+		if [ -d "$TOP_DIR/prebuilts/gcc/linux-x86/arm/gcc-arm-10.2-2020.11-x86_64-arm-none-linux-gnueabihf" ]; then
+		CROSS_COMPILE=$TOP_DIR/prebuilts/gcc/linux-x86/arm/gcc-arm-10.2-2020.11-x86_64-arm-none-linux-gnueabihf/bin/arm-linux-gnueabihf-
+		fi
+		;;
+	arm64|aarch64)
+		if [ -d "$TOP_DIR/prebuilts/gcc/linux-x86/aarch64/gcc-arm-10.2-2020.11-x86_64-aarch64-none-linux-gnu" ]; then
+		CROSS_COMPILE=$TOP_DIR/prebuilts/gcc/linux-x86/aarch64/gcc-arm-10.2-2020.11-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-
+		fi
+		;;
+	*)
+		echo "the $ARCH not supported for now, please check it again\n"
+		;;
+	esac
+	export CROSS_COMPILE=$CROSS_COMPILE
+}
+
 function build_check(){
 	local build_depend_cfg="build-depend-tools.txt"
 	common_product_build_tools="device/rockchip/common/$build_depend_cfg"
@@ -504,6 +524,8 @@ function build_kernel(){
 	echo "TARGET_KERNEL_CONFIG_FRAGMENT =$RK_KERNEL_DEFCONFIG_FRAGMENT"
 	echo "=========================================="
 
+	build_check_cross_compile
+
 	cd kernel
 	make ARCH=$RK_ARCH $RK_KERNEL_DEFCONFIG $RK_KERNEL_DEFCONFIG_FRAGMENT
 	make ARCH=$RK_ARCH $RK_KERNEL_DTS.img -j$RK_JOBS
@@ -526,6 +548,8 @@ function build_modules(){
 	echo "TARGET_KERNEL_CONFIG_FRAGMENT =$RK_KERNEL_DEFCONFIG_FRAGMENT"
 	echo "=================================================="
 
+	build_check_cross_compile
+
 	cd kernel
 	make ARCH=$RK_ARCH $RK_KERNEL_DEFCONFIG $RK_KERNEL_DEFCONFIG_FRAGMENT
 	make ARCH=$RK_ARCH modules -j$RK_JOBS