[libvirt] [PATCH v2] configure: Check for MSG_NOSIGNAL availability
Andrea Bolognani
abologna at redhat.com
Wed Jul 20 13:38:21 UTC 2016
On Wed, 2016-07-20 at 14:19 +0100, Daniel P. Berrange wrote:
> On Wed, Jul 20, 2016 at 03:16:35PM +0200, Andrea Bolognani wrote:
> >
> > The symbol being missing has been reported as causing build
> > failures on OS X. Check for its availability before using it.
> > ---
> > Changes from v1:
> >
> > * don't unnecessarily check for availability at configure
> > time (thanks Ján)
> >
> > src/util/virsystemd.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/src/util/virsystemd.c b/src/util/virsystemd.c
> > index 969cd68..81ee538 100644
> > --- a/src/util/virsystemd.c
> > +++ b/src/util/virsystemd.c
> > @@ -482,7 +482,7 @@ int virSystemdTerminateMachine(const char *name)
> > void
> > virSystemdNotifyStartup(void)
> > {
> > -#ifdef HAVE_SYS_UN_H
> > +#if defined(HAVE_SYS_UN_H) && defined(MSG_NOSIGNAL)
> > const char *path;
> > const char *msg = "READY=1";
> > int fd;
> > @@ -526,7 +526,7 @@ virSystemdNotifyStartup(void)
> > VIR_WARN("Failed to notify systemd");
> >
> > VIR_FORCE_CLOSE(fd);
> > -#endif /* HAVE_SYS_UN_H */
> > +#endif /* defined(HAVE_SYS_UN_H) && defined(MSG_NOSIGNAL) */
>
> IMHO it'd be nicer to just do
>
>
> #ifndef MSG_NOSIGNAL
> #define MSG_NOSIGNAL 0
> #endif
>
> as it avoids creating ever more compicated conditional blocks around the
> code.
So pretty much the patch that was proposed initially, then ;)
v3 coming right up!
--
Andrea Bolognani / Red Hat / Virtualization
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