Re: [Qemu-block] [Qemu-devel] [PATCH] quorum: Only compile when supported

[Alberto Garcia]

On Tue 05 Jul 2016 10:45:21 AM CEST, Daniel P. Berrange wrote:

> The point of using qcrypto_hash_supports() is that it isolates the
> block code Makefile rules from the details of the current specific
> impl of the hash APIs in QEMU. As a prime example of why this is
> important, try rebasing to GIT master, and you'll find we no longer
> use gnutls for the hash APIs. We choose between libgcrypt, nettle or a
> empty stub for hash impls now. I think it is a backwards step to add
> back these makefile conditionals

Now that you mention this I wonder why we are not using glib for the
hashing functions. GChecksum is available since glib 2.16 (QEMU requires
2.22) and it supports MD5, SHA1, SHA256 and SHA512. I see that in git
master there's now a few algorithms more, but for the Quorum case those
ones are enough.

Berto