Re: minimum Meson version

Peter Eisentraut <peter(at)eisentraut(dot)org> writes:
> I see that Rocky Linux 8 ships with Meson 0.58.2 [0], so maybe that is a
> good target to aim for. (I don't know if that carried over from RHEL 8
> or is their own doing.) But there aren't any compelling features new in
> 0.58 (format strings seem nice but are pretty much cosmetic), so maybe
> setting the minimum to 0.57 is enough.

RHEL 8 does include meson 0.58.2. However, it also ships ninja 1.8.2
which is too old:

$ meson setup build
...
Found ninja-1.8.2 at /usr/bin/ninja
ninja: error: build.ninja:7378: multiple outputs aren't (yet?) supported by depslog; bring this up on the mailing list if it affects you

WARNING: Could not create compilation database.

So in the Red Hat universe, the first release that has usable meson
infrastructure for our purposes is RHEL 9, which has meson 0.63.3
and ninja 1.10.2. Not sure how that factors into this calculation.
But unless we can back off our minimum ninja version, it's going
to be a long time before we can abandon the makefiles.

regards, tom lane