Cannot build --with-pmix on Fedora 36 with distro pmix package

[dalcinl]

I'm trying to configure --with-pmix on Fedora 36 using the distro pmix[-devel] RPM package

$ rpm -ql pmix-devel
/usr/include/pmix.h
/usr/include/pmix_common.h
/usr/include/pmix_deprecated.h
/usr/include/pmix_extend.h
/usr/include/pmix_server.h
/usr/include/pmix_tool.h
/usr/include/pmix_version.h
/usr/lib64/libpmix.so
/usr/lib64/pkgconfig/pmix.pc
/usr/share/pmix/pmix-valgrind.supp

However, it does not work:

./configure --with-pmix ...
...
configure: error: No PMI client interface was configured, consider --enable-pmi-simple or --with-pmi

Looking at the generated shell code in configure, looks like libmpix.* is searched on /usr/lib/, but not in /usr/lib64/, and then PMIx is not found.

[dalcinl]

After manually search and replace $pmix_ext_install_dir/lib->lib64 in configure, I had it working, but only if I explicitly pass --with-pmi=external. A bare --with-pmix did not make it.

[davidozog]

Thanks for the report. The SOS m4 that picks up pmix comes from upstream (OpenMPI), and it looks like there are relatively recent changes to those files. We can try incorporating these changes to see if this problem has been fixed. If not, we'll create an issue upstream.