Re: building GNU gettext on AIX

[David Edelsohn]

On Thu, Nov 16, 2023 at 1:52 PM Bruno Haible <bruno@clisp.org> wrote:

David Edelsohn wrote:
> I manually commented out HAVE_PTHREAD_API from config.h and produced a
> libintl.a without references to pthreads.

Good finding!

Commenting out HAVE_PTHREAD_API from config.h is also what makes the
option --enable-threads=isoc work as expected on AIX 7.3.

I reconfigured and built gettext with --enable-threads=isoc .  libintl.a still contains references to pthread_mutex and friends:

$ nm -BCpg libintl.a  | grep pthread

         - U __n_pthreads

         - U .pthread_mutex_lock

         - U .pthread_mutex_unlock

         - U .pthread_mutex_lock

         - U .pthread_mutex_unlock

         - U __n_pthreads

from files mbrtowc, setlocale_null, and vasnwprintf.

I tested on an AIX 7.2.5 system and confirmed that libc does provide the mtx_ symbols:

$ nm -BCpg libc.a | grep mtx_

         0 T .mtx_timedlock

       160 T .mtx_unlock

       256 T .mtx_trylock

       416 T .mtx_lock

       512 T .mtx_init

       736 T .mtx_destroy

        80 D mtx_timedlock

        92 D mtx_unlock

       104 D mtx_trylock

       116 D mtx_lock

       128 D mtx_init

       140 D mtx_destroy

Were you suggesting that --enable-threads=isoc would work now or that it would require further changes for a future release?

At the moment, configuring gettext with --disable-threads and manually modifying config.h is the only method that produces

libintl.a without references to pthreads allowing GCC to build on AIX with NLS enabled.

Thanks, David