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Re: [Qemu-devel] converting build system to Meson?
From: |
Markus Armbruster |
Subject: |
Re: [Qemu-devel] converting build system to Meson? |
Date: |
Thu, 18 Apr 2019 10:21:59 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) |
Paolo Bonzini <address@hidden> writes:
> Hi all,
>
> lately I have been thinking of converting the QEMU build system to
> Meson. Meson is a relatively new build system that can replace
> Autotools or hand-written Makefiles such as QEMU; as a die-hard
> Autotools fan, I must say that Meson is by far better than anything else
> that has ever tried to replace Autotools, and actually has the potential
> to do so.
>
> Advantages of Meson that directly matter for QEMU include:
>
> - build definitions in a very readable and user friendly DSL, which
> supports looping and conditions.
>
> - ability to introspect the build definitions so that you can find out
> what is built without building it (the DSL is not Turing complete and
> most objects in it are immutable, so it cannot be abused that much :))
>
> - support for a non-recursive build from per-subdirectory input (similar
> to Makefile.objs)
Could Meson build the $(TARGET_DIRS) non-recursively?
I'm asking because I find the make recursion there annoying. As usual
with recursion, we have to dumb down dependencies: if anything made by
the recursion needs X, then everything does. If making X fails, we
don't recurse. Defeats -k.
> - ease of distributing a full copy of Meson to support distros that ship
> an older version (no dependencies apart from Python 3.5). At 40000
> lines of Python, Meson is relatively small.
[...]
- Re: [Qemu-devel] converting build system to Meson?,
Markus Armbruster <=