Re: [Qemu-devel] [RFC V6 09/33] qcow2: Implement qcow2_compute_cluster_hash.

[Stefan Hajnoczi]

On Wed, Feb 06, 2013 at 01:31:42PM +0100, Benoît Canet wrote:
> diff --git a/configure b/configure
> index 0657b1a..389f8aa 100755
> --- a/configure
> +++ b/configure
> @@ -1749,6 +1749,28 @@ EOF
>  fi
>  
>  ##########################################
> +# QCOW Deduplication gnutls detection
> +cat > $TMPC <<EOF
> +#include <gnutls/gnutls.h>
> +#include <gnutls/crypto.h>
> +int main(void) {char data[4096], digest[32];
> +gnutls_hash_fast(GNUTLS_DIG_SHA256, data, 4096, digest);
> +return 0;
> +}
> +EOF
> +qcow_tls_cflags=`$pkg_config --cflags gnutls 2> /dev/null`
> +qcow_tls_libs=`$pkg_config --libs gnutls 2> /dev/null`
> +if compile_prog "$qcow_tls_cflags" "$qcow_tls_libs" ; then
> +  qcow_tls=yes
> +  libs_softmmu="$qcow_tls_libs $libs_softmmu"
> +  libs_tools="$qcow_tls_libs $libs_softmmu"
> +  QEMU_CFLAGS="$QEMU_CFLAGS $qcow_tls_cflags"
> +else
> +  echo "gnutls > 2.10.0 required to compile QEMU"
> +  exit 1
> +fi
> +
> +##########################################
>  # VNC SASL detection
>  if test "$vnc" = "yes" -a "$vnc_sasl" != "no" ; then
>    cat > $TMPC <<EOF

VNC already depends on gnutls.  Can the gnultls probe be reused?  No
point probing twice, once for dedup and once for vnc.

Stefan