Re: building GNU gettext on AIX

[David Edelsohn <dje.gcc@gmail.com>]

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Bruno,

The issue appears to be that intl/gnulib-lib/{mbrtowc.c,setlocale_null.c}
include pthread.h based on HAVE_PTHREAD_API, which is defined as 1 in
intl/config.h build directory despite requesting --disable-pthreads.

Thanks, David

On Thu, Nov 16, 2023 at 11:35 AM David Edelsohn <dje.gcc@gmail.com> wrote:

> I configured gettext with --disable-pthreads and libintl.a still contains
> references to pthread_mutex_lock and pthread_mutex_unlock, which causes NLS
> configure to fail on AIX.
>
> How can this be corrected?
>
> Thanks, David
>
> libintl.a[libgnu_la-mbrtowc.o]:
>
>          - U __lc_charmap
>
>          - U errno
>
>          - U .locale_encoding_classification
>
>          - U .gl_get_mbtowc_lock
>
>          - U .pthread_mutex_lock
>
>          - U .mbtowc
>
>          - U .pthread_mutex_unlock
>
>          - U .abort
>
>          0 T ._libintl_mbrtowc
>
>       1952 D _libintl_mbrtowc
>
> libintl.a[libgnu_la-setlocale_null.o]:
>
>          - U .gl_get_setlocale_null_lock
>
>          - U .pthread_mutex_lock
>
>          - U .setlocale
>
>          - U .strlen
>
>          - U .memcpy
>
>          - U .pthread_mutex_unlock
>
>          - U .abort
>
>          - U .strcpy
>
>        336 T ._libintl_setlocale_null_r
>
>        400 T ._libintl_setlocale_null
>
>        812 D _libintl_setlocale_null_r
>
>        824 D _libintl_setlocale_null
>
> On Thu, Nov 16, 2023 at 11:00 AM David Edelsohn <dje.gcc@gmail.com> wrote:
>
>> Bruno,
>>
>> I have been able to tweak the environment and build gettext and libintl.
>> With the updated libintl and environment, GCC reliably does not use NLS.
>>
>> The issue is that libintl utilizes pthreads.  AIX does not provide no-op
>> pthread stubs in libc.  pthreads is an explicit multilib on AIX.
>>
>> It is great that gettext and libintl can be built thread-safe, but GCC
>> (cc1, gcov, etc.) are not pthreads applications and are not built with
>> pthreads.  Because libintl defaults to pthreads enabled, NLS cannot
>> function in GCC on AIX by default.  The GCC included gettext was built in
>> the default for GCC libraries, which was not pthreads enabled.
>>
>> I can rebuild libintl with --disable-pthreads and I will see if that
>> works, but the default, distributed libintl library will not allow GCC to
>> be built with NLS enabled.  And, no, GCC on AIX should not be forced to
>> build with pthreads.
>>
>> This is a regression in NLS support in GCC.
>>
>> Thanks, David
>>
>>
>> On Wed, Nov 15, 2023 at 5:39 PM Bruno Haible <bruno@clisp.org> wrote:
>>
>>> David Edelsohn wrote:
>>> > I am using my own install of GCC for a reason.
>>>
>>> I have built GNU gettext 0.22.3 in various configurations on the AIX 7.1
>>> and 7.3 machines in the compilefarm, and haven't encountered issues with
>>> 'max_align_t' nor with 'getpeername'. So, from my point of view, GNU
>>> gettext
>>> works fine on AIX with gcc and xlc (but not ibm-clang, which I haven't
>>> tested).
>>>
>>> You will surely understand that I cannot test a release against a
>>> compiler
>>> that exists only on your hard disk.
>>>
>>> The hint I gave you, based on the partial logs that you provided, is to
>>> look at the configure test for intmax_t first.
>>>
>>> Bruno
>>>
>>>
>>>
>>>