Latest version of GNU Binutils, GCC, GLIBC which support cross-compiling for GNU/Linux running on 64-bit ARMv8 CPU. Binaries built by this toolchain should be able to run on Fedora AArch64.
This is a companion discussion topic for the original entry at https://copr.fedorainfracloud.org/coprs/lantw44/aarch64-linux-gnu-toolchain/