+ aarch64*-*-elf*) fmt=elf;;
+ aarch64*-*-fuchsia*) fmt=elf;;
+ aarch64*-*-haiku*) fmt=elf em=haiku ;;
+ aarch64*-*-genode*) fmt=elf;;
+ aarch64*-*-linux*) fmt=elf em=linux
+ case ${cpu}-${os} in
+ aarch64*-linux-gnu_ilp32) arch=aarch64:32 ;;
+ esac ;;
+ aarch64*-*-netbsd*) fmt=elf em=nbsd;;
+ aarch64*-*-openbsd*) fmt=elf;;