[Mesa-dev] Lets talk about autotools

[Chuck Atkins]

Was there any conclusion on the idea of "auto" in having the build try to
adapt to your systems by default instead of just assuming a configuration?
That's the biggest issue I see at the momemt; for many options the current
auto-tools build tries to adapt to your system and for the most part does
an okay job, the meson build does not.


----------
Chuck Atkins
Staff R&D Engineer, Scientific Computing
Kitware, Inc.


On Fri, Nov 23, 2018 at 8:46 PM Marek Olšák <maraeo at gmail.com> wrote:

> On Fri, Nov 16, 2018 at 11:05 PM Dylan Baker <dylan at pnwbakers.com> wrote:
>
>> 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?
>>
>
> Everything seems OK here.
>
> Marek
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