glibc/ports/sysdeps/aarch64/preconfigure

case "$machine" in
aarch64*)
	base_machine=aarch64
	machine=aarch64
	;;
esac

case "$machine" in
aarch64*)
	# Parameters to allow auto-detection of -z relro.
	libc_commonpagesize=0x1000
	libc_relro_required=yes
	;;
esac