1BR2_powerpc64=y 2BR2_powerpc_power7=y 3BR2_TOOLCHAIN_EXTERNAL=y 4BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y 5BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.net/toolchains/tarballs/br-powerpc64-power7-glibc-2020.11.2.tar.bz2" 6BR2_TOOLCHAIN_EXTERNAL_GCC_9=y 7BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_9=y 8BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y 9BR2_TOOLCHAIN_EXTERNAL_CXX=y 10