Re: [RFC] building postgres with meson

čt 14. 10. 2021 v 19:24 odesílatel Andres Freund <andres(at)anarazel(dot)de> napsal:
>
> Hi,
>
> On 2021-10-14 10:29:42 -0300, Alvaro Herrera wrote:
> > On 2021-Oct-14, Josef Šimánek wrote:
> >
> > > I'm using Fedora 34 and I still see perl-Opcode.x86_64 as a separate
> > > package. Anyway it behaves differently with autoconf tools and the
> > > meson build system. Is perl disabled by default in the current build
> > > system?
>
> Hm, so it seems we should make the test separately verify that perl -M{Opcode,
> ExtUtils::Embed, ExtUtils::ParseXS} doesn't fail, so that we can fail perl
> detection with a useful message?

I can confirm "perl -MOpcode" fails. ExtUtils::Embed and
ExtUtils::ParseXS are present. Looking at the local system history of
perl-interpreter package, it seems to be installed by default on
Fedora 34. Friendly error message would be welcomed.

>
> > Yes, you have to use --with-perl in order to get it.
>
> With the meson prototype I set most optional features to "auto", except for
> LLVM, as that increases compile times noticeably.
>
> For configure we didn't/don't want to do much auto-detection, because that
> makes life harder for distributors. But meson has one switch controlling all
> features set to 'auto' and not explicitly enabled/disabled:
> --auto-features {enabled,disabled,auto} Override value of all 'auto' features (default: auto).
> so the argument doesn't apply to the same degree there. We could default
> auto-features to something else too.
>
> There were two other reasons:
>
> 1) I got tired of needing to disable zlib, readline to be able to build on
> windows.
> 2) Exercising all the dependency detection / checking seems important at this
> stage

Clear, thanks for the info.

> Greetings,
>
> Andres Freund