Re: locale / encoding / meson cleanup

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: locale / encoding / meson cleanup
Date: 2026-08-28 13:44:01
Message-ID: 0f11d6d1-860c-4b78-883b-23ef7eed337a@dunslane.net
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On 2026-08-26 We 10:08 AM, Nazir Bilal Yavuz wrote:
> Hi,
>
> Thank you for working on this!
>
> I reviewed this patch with GPT's help and confirmed that some findings
> are relevant.
>
> On Sun, 23 Aug 2026 at 16:01, Andrew Dunstan <andrew(at)dunslane(dot)net> wrote:
>> 2. collate.linux.utf8 has never run on a meson build
>>
>> infinite_recurse is the other test that matches on the platform string,
>> and it
>> gets it the other way round: it means to skip itself on ppc64 Linux
>> because of
>> a kernel bug, and on a meson build the match will never fire, so it will be
>> running the case it's meant to stay away from. I don't have a ppc64
>> machine to
>> confirm that end of it, so that part is a reading of the code rather than
>> something I've observed.
> It seems meson returns 'ppc64' [1].
>
>> 0004 makes the meson build report the GNU host triplet, by asking the
>> compiler
>> for it with -dumpmachine where it supports that and falling back to the
>> present
>> behaviour otherwise.
> +host_tuple = '@0(at)-@1@'.format(host_machine.cpu_family(), host_system)
> +if cc.get_id() in ['gcc', 'clang']
> + dumpmachine = run_command(cc.cmd_array(), '-dumpmachine', check: false)
>
> I think we need to add c_args here, like:
>
> dumpmachine = run_command(
> cc.cmd_array() + get_option('c_args'), '-dumpmachine', check: false)
>
> There could be a '--target' in the c_args which might affect the result [2].
>
> [1] https://mesonbuild.com/Reference-tables.html#cpu-families
> [2] https://clang.llvm.org/docs/ClangCommandLineReference.html

Thanks for checking. I adjusted patch 3 accordingly and have pushed it.

I'll rework patch 4 according to your suggestions and add a CF entry for it.

cheers

andrew

--
Andrew Dunstan
EDB: https://www.enterprisedb.com

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