BR2_arm=y BR2_cortex_m4=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-cortex-m4-full-2017.05-1078-g95b1dae.tar.bz2" BR2_TOOLCHAIN_EXTERNAL_GCC_6=y BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y BR2_TOOLCHAIN_EXTERNAL_LOCALE=y # BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set # BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_NPTL is not set BR2_TOOLCHAIN_EXTERNAL_CXX=y