Re: require cairo?

[Ben Pfaff]

I made this change.

On Fri, Jan 8, 2021 at 10:05 AM Ben Pfaff <blp@cs.stanford.edu> wrote:
>
> On Fri, Jan 8, 2021 at 2:08 AM John Darrington
> <john@darrington.wattle.id.au> wrote:
> >
> > On Thu, Jan 07, 2021 at 10:31:36PM -0800, Ben Pfaff wrote:
> >      Actually the build is already broken without cairo, because the figures
> >      for the documentation fail to build.
> >
> > When you say the "figures" are you talking about the images or the examples?
>
> I am talking about the .png files built from the examples in the manual.
>
> > The examples should not require cairo so far as I'm aware (however that
> > might change if we have examples with graphs in them).
>
> The build system builds .png files so that the output in the Info version
> of the manual can look nice, where available.
>
> > In general,  I'm inclined to agree, that the --without-cairo flag
> > probably brings more cost than benefit.
> >
> > Checking that everything builds with all combination of flags becomes
> > rapidly intractable.  Testing N configure flags, requires having 2^N
> > nightly builds ...
>
> Yes. And I think that most users will want pretty output. If they want
> the GUI, it's required anyhow.