Re: [Qemu-devel] git master build failure in 9pfs

[Greg Kurz <groug@kaod.org>]

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On Thu, 2 Mar 2017 18:10:29 +0000
Peter Maydell <peter.maydell@linaro.org> wrote:

> On 2 March 2017 at 17:40, Daniel P. Berrange <berrange@redhat.com> wrote:
> > On Thu, Mar 02, 2017 at 05:28:24PM +0000, Mark Cave-Ayland wrote:  
> >> Build platform is Debian Wheezy on an x86_64 host.  
> >
> > IIUC, O_PATH was introduced in glibc 2.14 and Wheezy only has 2.13.
> >
> > So unless we want to make this 9pfs code a configurable option, this
> > means Debian Wheezy is no longer a supportable platform for QEMU.  
> 
> I suspect some of our other supported host OSes still have
> glibc 2.13 as well.
> 
> I think we should make this a configure check (assuming O_PATH
> is a hard requirement for 9p now).

No it's not. It can be defined to 0 if doesn't exist.

BTW, I only discover now about this problem... Mark, please Cc me next time
for 9p related problems.

Cheers.

--
Greg

> We already only build 9pfs if
> we're on a Linux host and have the libcap and libattr libraries available.
> 
> thanks
> -- PMM
> 


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