BR2_arm=y BR2_TOOLCHAIN_EXTERNAL=y BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm-basic-2019.05.1.tar.bz2" BR2_TOOLCHAIN_EXTERNAL_GCC_7=y BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_1=y # BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set