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Date: Tue, 8 Mar 2022 15:23:08 -0500
From: Carlos O'Donell <>
 Adhemerval Zanella <>,
 Rich Felker <>
Cc: John Scott <>
Subject: Re: Missing _CS_POSIX_V7_THREADS_CFLAGS and Missing

On 3/8/22 11:32, Adhemerval Zanella wrote:
> On 08/03/2022 11:01, Rich Felker wrote:
>> On Tue, Mar 08, 2022 at 10:52:48AM -0300, Adhemerval Zanella wrote:
>>> On 08/03/2022 10:02, Rich Felker wrote:
>>>> On Tue, Mar 08, 2022 at 06:50:51AM +0000, John Scott wrote:
>>>>> Hi all,
>>>>> Please CC me on replies.
>>>>> It seems like musl is missing these confstr parameters which are
>>>>> necessary to portably get the build flags for building multithreaded
>>>>> programs.
>>>> Yes, we were waiting to add them to pick common numbers that glibc
>>>> would also use. Any idea if they've done that yet? If not I'll ping
>>>> them again, and if they still don't respond I guess we just pick our
>>>> own and let them potentially diverge...
>>> Do you have the initial thread on libc-alpha in hand? I think I missed it.
>>> In any case I would like to not diverge.
>> From 2020:
>> Subject: [RFC][PATCH] * bits/confname.h: Define _CS_POSIX_V7_THREADS_CFLAGS, _CS_POSIX_V7_THREADS_LDFLAGS
>> Message-Id: <>
> Thanks, the patch missed some bits but I think the rationale is ok to
> include.  If √Črico can update the patch I will apply it.

Agreed, there is no reason not to add them.

With libpthread merged into libc (as you noted) this is simpler too.


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