Running os-test on glibc's POSIX headers

[enh]

On Tue, Oct 7, 2025 at 10:06 AM Jonas 'Sortie' Termansen
<sortie@maxsi.org> wrote:
>
> Oh it's wonderful to hear my POSIX.1-2024 blog post was useful! The
> new os-test include suite is an evolution of that concept since I was
> able to generate exact machine definitions of what's new, and even
> diff old and new POSIX.

(i don't remember where i saw it, but i read through it too to
double-check on what i'd added to Android's libc :-) )

> I just made a namespace pollution checker and published data for every
> system:
>
> https://sortix.org/os-test/namespace/
>
> glibc scores very highly with a top score of 84% and is careful to
> avoid namespace pollution, but fails to remove obsolete declarations
> that no longer exist in POSIX.1-2024, and also has some sys/socket.h
> reserved namespace issues (it turns out AF_* and a few others are only
> reserved in XSI for some reason).
>
> os-test respects CC, CFLAGS, CPPFLAGS, LDFLAGS (-lc -lpthread -lm
> -lrt -lxnet only), and EXTRA_LDFLAGS (any other lib, see README). It
> should be trivial to run glibc against a development glibc build using
> the standard methods. Cross-compilation is also supported. If there's
> anything I do to to make os-test more useful or easy to use, please
> let me know. It's designed to run everywhere and be useful for
> everyone :)
>
> If anyone uses this data to make improvements, I would love to hear
> about it :D