Depending on external libraries
Thu Mar 11 12:24:16 PST 2004
Keith Packard writes:
> Around 17 o'clock on Mar 10, "Kendall Bennett" wrote:
> > But for some poor schmo who loves X and just wants to get his feet wet
> > building the latest code from X.org or whatever, it can be a really serious
> > problem if the code won't build or even work if that developer has outdated
> > libraries.
> The correct solution here is a meta build-tool like jhbuild which ensures
> that the correct dependent versions of each service is built by fetching
> bits directly from upstream during the build process.
This may be a feasable way, also I find the idea to have a tool that
automagically pulls sources of SW from the internet without me explicitely
saying so a little bit scary.
> We've got that working for the modular build and it's really quite usable;
> far better than accidentally installing ancient stale garbage into your
> system and wondering why your fonts are completely screwed up.
This only happens because the monolithic build has the wrong
'convenience default', namely to use the libs in extra/ unless
explicitely told not to.
> If you accept that we plan to move to the modular environment for the
> majority of development, then starting now by eliminating pieces which can
> easily be built independently will only help make that migration easier
> and less painful.
Well, for this to work painlessly and the way it is intended the
autotooled build system needs some polishing.
> Whether we should create a jhbuild configuration for the monolithic tree
> and its dependencies is another issue; it would be trivial and perhaps
> would help poor schmos...
If we employ a notion of 'external' and 'internal' dependencies
('internal' means dependencies which we have control over),
document the external ones well and keep the internal ones simple
jhbuild may be a huge overhead. Most people probably want to get
'everything' that we provide internally for bootstrapping and just
updated pieces to fix problems.
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