From: =?utf-8?Q?Dagfinn_Ilmari_Manns=C3=A5ker?= <ilmari@ilmari.org>
To: Josef =?utf-8?B?xaBpbcOhbmVr?= <josef.simanek@gmail.com>
Cc: Andres Freund <andres@anarazel.de>,  Pg Hackers
 <pgsql-hackers@postgresql.org>
Subject: Re: [RFC] building postgres with meson
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	<CAFp7QwrBTaEzSLve+W_8748xyVqmSpYX46fBt+hGeugj+R4F7w@mail.gmail.com>
	<20211012235435.ozcmsvosdziala7f@alap3.anarazel.de>
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	<87ee8nsq80.fsf@wibble.ilmari.org>
	<CAFp7QwrUD2--m09HAZXYo3Tb0aBW_esEuU3J7+o=ySjssZkpMQ@mail.gmail.com>
Date: Thu, 14 Oct 2021 14:32:49 +0100
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Josef Šimánek <josef.simanek@gmail.com> writes:

> čt 14. 10. 2021 v 15:14 odesílatel Dagfinn Ilmari Mannsåker
> <ilmari@ilmari.org> napsal:
>>
>> Josef Šimánek <josef.simanek@gmail.com> writes:
>>
>> > The only problem I do have currently is auto-detection of perl. I'm
>> > getting error related to missing "Opcode.pm". PERL is autodetected and
>> > enabled (https://pastebin.com/xfRRrDcU).
>>
>> Your Perl (not PERL) installation seems to be incomplete. Opcode.pm is a
>> core module, and should be in /usr/lib64/perl5, judging by the paths in
>> the error message.
>>
>> Which OS is this?  Some Linux distributions have separate packages for
>> the interpreter itself and the included modules, and the packages can be
>> named confusingly.  E.g. on older Redhat/Fedora versions you have to
>> install the 'perl-core' package to get all the modules, 'perl' is just
>> the interpreter and the bare minimum set of strictily necessary modules.
>>
>> They've fixed this in recent versions (Fedora 34 and Redhat 8, IIRC), so
>> that 'perl' gives you the hole bundle, and 'perl-interpeter' is the
>> minimal one.
>
> I'm using Fedora 34 and I still see perl-Opcode.x86_64 as a separate
> package.`

Yes, it's a separate package, but the 'perl' package depends on all the
core module packages, so installing that should fix things.  You appear
to only have 'perl-interpreter' installed.

> Anyway it behaves differently with autoconf tools and the meson build
> system. Is perl disabled by default in the current build system?

configure doesn't auto-detect any optional features, they have to be
explicitly enabled using --with-foo switches.

- ilmari