[libvirt] [PATCH 14/28] Convert udev/pciaccess checks to use LIBVIRT_CHECK_PKG

[Daniel P. Berrange]

On Fri, Jan 11, 2013 at 03:17:01PM -0700, Eric Blake wrote:
> On 01/11/2013 04:05 AM, Daniel P. Berrange wrote:
> > From: "Daniel P. Berrange" <berrange at redhat.com>
> > 
> > Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
> > ---
> >  configure.ac         | 57 ++++------------------------------------------------
> >  m4/virt-pciaccess.m4 | 26 ++++++++++++++++++++++++
> >  m4/virt-udev.m4      | 32 +++++++++++++++++++++++++++++
> >  3 files changed, 62 insertions(+), 53 deletions(-)
> >  create mode 100644 m4/virt-pciaccess.m4
> >  create mode 100644 m4/virt-udev.m4
> > 
> 
> > +AC_DEFUN([LIBVIRT_RESULT_UDEV],[
> > +  AC_REQUIRE([LIBVIRT_RESULT_PCIACCESS])
> > +  LIBVIRT_RESULT_LIB([UDEV])
> > +])
> 
> Ah, we're starting to get pre-req checks.  You've been sorting by name,
> but this will cause results to be topologically sorted (with leaves
> reverting to sort-by-name).  Works for me.

Yep, this is slightly annoying. I haven't thought of a way to preserve
alphabetical sorting, while allowing topological usage of the macros.
This will get worse once we remove the explicit calls to all these
macros from configure.ac and make the individual hypervisor drivers
call the ones they need

Daniel
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