Add an arm64 sha512 feature check
This is only available in recent toolchains. Check for it so we can use it in libmd. Reviewed by: emaste Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D33166
This is only available in recent toolchains. Check for it so we can use it in libmd. Reviewed by: emaste Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D33166
mentioned in commit a72050a8
·mentioned in commit a72050a8