external toolchain buildroot

current

BR2_TOOLCHAIN_BUILDROOT_VENDOR="rockchip"
BR2_TOOLCHAIN_BUILDROOT_GLIBC=y
BR2_KERNEL_HEADERS_4_4=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_GCC_ENABLE_OPENMP=y


new

BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
BR2_TOOLCHAIN_EXTERNAL_PREINSTALLED=y
BR2_TOOLCHAIN_EXTERNAL_PATH=/linux/rk3308/buildroot/output_toolchain/host/
BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_4=y
BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
# BR2_TOOLCHAIN_EXTERNAL_HAS_SSP=y default value as well
# BR2_TOOLCHAIN_EXTERNAL_INET_RPC=y default
# BR2_TOOLCHAIN_EXTERNAL_CXX=y default


# --- AFTER ---
...
BR2_PACKAGE_HOST_GDB=y
BR2_TARGET_GENERIC_HOSTNAME="rockchip"
BR2_TARGET_GENERIC_ISSUE="Welcome to Rockchip"
BR2_TARGET_GENERIC_PASSWD_SHA256=y
BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y