It's not really a problem, per se -- it's that Open MPI needs a lib event with thread support enabled. The lib event that configure found / tried to use did not have thread support enabled.
What was the command line you used to invoke configure? > On Apr 11, 2021, at 1:52 PM, John Hearns via users <users@lists.open-mpi.org> > wrote: > > OS - CentSO 7.9 > OpenMPI 3.1.6 > libevent libevent-2.0.21-4.el7.x86_6 > OFED MLNX_OFED_LINUX-5.2-2.2.0.0 > > When trying to configure openmpi-3.1.6 I get this error > checking for evthread_set_lock_callbacks in -levent... no > configure: WARNING: External libevent does not have thread support > configure: WARNING: Open MPI requires libevent to be compiled with > configure: WARNING: thread support enabled > configure: error: Cannot continue > make: *** No targets specified and no makefile found. Stop. > > Configure log is attached. > > I guess this will be a known problem ? > > John H > <config.log.bz2> -- Jeff Squyres jsquy...@cisco.com
