Re: [Xen-devel] [PATCH for-4.5] systemd: use pkg-config to determine systemd library availability

[M A Young <m.a.young@xxxxxxxxxxxx>]

On Wed, 3 Dec 2014, Konrad Rzeszutek Wilk wrote:

> On Wed, Dec 03, 2014 at 11:55:22AM +0100, Olaf Hering wrote:
> > On Wed, Dec 03, Ian Campbell wrote:
> >
> > > On Wed, 2014-12-03 at 11:49 +0100, Olaf Hering wrote:
> > > > On Wed, Dec 03, Ian Campbell wrote:
> > > >
> > > > > Ah I didn't know about the sd_listen_fds thing, so I think that what we
> > > > > need then is to use pkg-config first to determine if systemd-daemon is
> > > > > present at all, and then check for specific symbols we require using the
> > > > > pkg-config supplied CFLAGS and LDFLAGS rather than assuming
> > > > > -lsystemd-daemon.
> > > > Correction: sd_listen_fds is available since at least v1.
> > > >  git describe --contains abbbea81a8fa70badb7a05e518d6b07c360fc09d
> > > >  v1~390
> > > In that case I don't think we realistically need to check for it?
> > Yes. Anything before 208 is stale. At least I dont have anything older
> > around for testing.
> And for Fedora it is Fedora 21 or later. F20 has 208 so we are OK there.
Fedora 21 is going through its final release candidates now so it will 
stick to Xen 4.4 . The first Fedora release that might use this code (if I 
decide to use it - at the moment I have reservations) would be Fedora 22.
        Michael Young

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