Re: Meson feedback as a user

All good guidelines!

On Fri, Nov 24, 2017 at 8:49 AM, Emmanuele Bassi <ebassi gmail com> wrote:
- Try to avoid automatic feature detection; this makes it harder for distributors and continuous integration systems to identify the dependencies needed to build your project

I would use much stronger wording here. Automagic dependencies (meson's auto dependencies) are *evil*, a huge number of GNOME projects used them in their Autotools build systems, and believe some projects have dutifully ported them over to their new Meson build systems. Please pick reasonable true or false defaults for your project, and *fail the build* if a dependency for a feature is missing. Make the user explicitly disable the feature to proceed without the dependency. It's really, really unkind to distributions, Gentoo users, and anyone building your software to make features *silently disappear* if they don't magically know to have a certain BuildRequires.

There are some *very rare* cases where automagic dependencies actually do make sense. For example, WebKitGTK+ will automagically determine to build with OpenGL ES support rather than OpenGL support if OpenGL ES is available but not OpenGL, because in the end no feature is disabled, and if you have one but not the other it's very likely that's the one you intend to be used. But if neither one is installed, the build will *fail* until you decide what to do: GL support will not just disappear unless you explicitly turn it off.


[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]