export CROSS_COMPILE=/devel/openwrt/AP3825i/openwrt/staging_dir/toolchain-powerpc_8540_gcc-8.4.0_musl/bin/powerpc-openwrt-linux-musl-
export ARCH=powerpc
export STAGING_DIR=/devel/openwrt/AP3825i/openwrt/staging_dir
export DTC_FLAGS='-@'