[Mesa-dev] Lets talk about autotools

[Dylan Baker]

Quoting Dylan Baker (2018-09-17 09:44:07)
> I feel like for !windows meson is in good enough shape at this point that we
> can start having the discussion about deleting the autotools build. So, is there
> anything left that autotools can do that meson cannot (that we actually want to
> implement)? And, what is a reasonable time-table to remove the autotools build?
> I think we could reasonably remove it as soon as 18.3 if others felt confident
> that it would work for them.
> 
> Dylan

Okay, time for an update on things and a chance to talk about what else we need.

Support for llvm-config (and any binary, actually) overriding has landed in
meson, and will be present in the 0.49.0 release, which is due out December 9th.
support for ICC has improved a great deal already, and I have a series here:
https://github.com/mesonbuild/meson/pull/4359 (which may unfortunately not
land until after 0.49) which should get ICC into pretty good shape on Linux and
Mac, including actually checking that arguments are understood (which should
allow us to drop the prefix test from SWR). I have some ideas on how we might
remove auto options, some of them can already use meson's "feature"
https://mesonbuild.com/Build-options.html#features option (which should make
distro packagers happy too), for arch and OS specific options I have some ideas
and I'll continue following up with those upstream.

For those interested in llvm-config overriding, with meson out of git you can
add a files like:

$ cat ~/.local/share/meson/native/llvm-6.0
[binaries]
llvm-conifg = '/usr/local/lib/llvm-6/bin/llvm-config'

and invoke meson with:
meson builddir --native-file llvm-6.0

which will configure with the specified llvm-config, and remember the
llvm-config used on subsequent reconfigurations. You can override all binaries
from a native file as well, so if you want to use a specific python3 or
compiler you can do that, and you can load multiple native files in a single
invocation.

Is there anything else we're missing in meson to be able to drop autotools?

Dylan
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