[libvirt] [PATCH] build: Require cppi for syntax-check

[Pavel Hrdina]

On Mon, Jun 17, 2019 at 11:50:01AM +0200, Andrea Bolognani wrote:
> On Mon, 2019-06-17 at 11:37 +0200, Martin Kletzander wrote:
> > On Mon, Jun 17, 2019 at 10:46:33AM +0200, Michal Privoznik wrote:
> > > On 6/17/19 9:15 AM, Andrea Bolognani wrote:
> > > > According to [1], only Fedora and FreeBSD have cppi packaged, so
> > > > merging this patch will make 'make syntax-check' suddenly fail on
> > > > all other target platforms.
> > > > 
> > > > I agree that the current situation is suboptimal, though. How about
> > > > we keep cppi optional, but print a more visible message about it not
> > > > being available after going through all syntax-check rules? That way
> > > > it'd be definitely more difficult to miss.
> > > 
> > > Oh, you're right. I did not realize that cppi is not on CentOS and some
> > > other funky distros. So I guess our only option is to make the error
> > > message more visible, e.g. some banner?
> > > 
> > > **********************
> > > * cppi not installed *
> > > **********************
> 
> Maybe "cppi not installed, some checks have been skipped", but yeah,
> that's pretty much exactly what I had in mind :)
> 
> > Yeah, you can also add it to BuildRequires and check for it during configure as
> > warning there would be more visible, I guess.  You can also require it only where you know it is available, but it might be too harsh.
> 
> Since the spec file is only targeted at Fedora and RHEL/CentOS, we
> can simply add
> 
>   %if 0%{?fedora}
>   BuildRequires: cppi
>   %endif

We don't actually run syntax-check when building RPMs so this should
not be in the spec file at all.

Pavel
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