Re: building GNU gettext on AIX

[David Edelsohn]

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