buildroot/toolchain/toolchain-external/toolchain-external-arm-aarch64/Config.in

config BR2_TOOLCHAIN_EXTERNAL_ARM_AARCH64
	bool "Arm AArch64 2021.07"
	depends on BR2_aarch64
	depends on BR2_HOSTARCH = "x86_64"
	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
	select BR2_TOOLCHAIN_HAS_SSP
	select BR2_INSTALL_LIBSTDCPP
	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
	select BR2_TOOLCHAIN_GCC_AT_LEAST_10
	select BR2_TOOLCHAIN_HAS_FORTRAN
	select BR2_TOOLCHAIN_HAS_OPENMP
	help
	  Arm toolchain for the AArch64 architecture.

	  This is the same toolchain that was previously distributed by
	  Linaro.

	  https://developer.arm.com/open-source/gnu-toolchain