[PATCH wayland-web] Added depencies and bug fixes to build instructions

[Thierry Reding]

On Thu, May 22, 2014 at 09:25:40AM +0300, Pekka Paalanen wrote:
> On Thu, 22 May 2014 00:18:23 +0200
> Thierry Reding <thierry.reding at gmail.com> wrote:
> 
> > On Wed, May 21, 2014 at 12:30:18PM +0300, Pekka Paalanen wrote:
> > > On Tue, 20 May 2014 13:12:32 -0700 Bill Spitzak <spitzak at gmail.com> wrote:
> > [...]
> > > > I have to tell you that such one-line-at-a-time cut & paste is 
> > > > unbelievably tedious, and my biggest screwups when trying this on a 
> > > > second machine was when I missed the slight variations in the autogen 
> > > > lines because I was using uparrow to re-run the commands from the last 
> > > > repository. That convinced me to remove the $ signs, although I agree 
> > > > with you that it is not as nice looking.
> > > 
> > > They are not meant to be copied repeatedly. Even basic common sense
> > > says, that if you end up copying them more than once, it would probably
> > > be worth to save them in a script.
> > > 
> > > If you manually do those commands every single time you open a new
> > > terminal to work in, you are bound to miss something.
> > > 
> > > The commands are an example. They are the foundation on which you can
> > > write your own environment setup.
> > > 
> > > OTOH, git-clone is ran only once. 'make' and 'make install' come from
> > > the spine. autogen.sh/configure arguments are better saved in a script
> > > if there are many of them like for Mesa, but you can always see them in
> > > 'head config.log', too.
> > 
> > Would it be an option to provide a jhbuild script that can be used to
> > automatically build everything from source? That should at least remove
> > any ambiguities or distribution specifics and should always work. Doing
> > so has two advantages: it is a script and therefore can save everybody
> > from a lot of typing (or copy/pasting) and it documents the origin and
> > exact command sequences required to build from source.
> > 
> > If not everything is to be built from source there is apparently also a
> > way to specify dependencies (via pkg-config files!) that are assumed to
> > be installed by the distribution.
> > 
> > I think back in the early days many people used jhbuild to build modular
> > X, though its usage seems to have declined. But perhaps that's just
> > because its so common that nobody considers it worth mentioning anymore
> > or X has stabilized to a point where building everything from source is
> > no longer required.
> 
> To be honest, I'm not familiar with jhbuild. I have seen people mention
> it on #wayland, though, and fighting with it.

> It could be nice - should it perhaps be checked into git somewhere, so one
> can keep track of the changes?

Yes, I think it should definitely be checked in somewhere so people can
easily keep their copy up-to-date.

> Where?

Good question. Neither the wayland nor the weston repository look like
they'd be a good fit. Perhaps it could be a separate repository? Or
perhaps make it part of wayland-web? That sounds like a bad choice at
first, but it would put the jhbuild scripts close to the building guide
and therefore may have advantages.

> As I personally am on a rolling-release distribution, I don't tend to
> see much problems with too old distro packages.

So am I, and I usually build distributions from scratch anyway so I
already have a set of scripts to build everything anyway.

But there are evidently people who are in a different situation and it
may be helpful to have some automatic build that they can run if they
encounter bugs and need to test patches.

Thierry
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