In my last posting, I had a typo in my LD_LIBRARY_PATH setting. With this fixed, now I get
configure:279563: gcc -std=gnu99 -std=gnu99 -o conftest -O3 -DNDEBUG -finline-functions -fno-strict-aliasing -mcx16 -pthread -I/install/u/tjcw/workspace/ompi/build/opal/mca/event/libevent2022/libevent/include -I/install/u/tjcw/workspace/ompi/opal/mca/event/libevent2022/libevent -I/install/u/tjcw/workspace/ompi/opal/mca/event/libevent2022/libevent/include -I/install/u/tjcw/workspace/ompi/build/opal/mca/hwloc/hwloc201/hwloc/include -I/install/u/tjcw/workspace/ompi/opal/mca/hwloc/hwloc201/hwloc/include -I/install/u/tjcw/workspace/ibm_smpi_toucan_ucx/ompibase/dependencies/mofed_400/opt/mellanox/hcoll/include -L/install/u/tjcw/workspace/ibm_smpi_toucan_ucx/ompibase/dependencies/mofed_400/opt/mellanox/sharp/lib -L/install/u/tjcw/workspace/ibm_smpi_toucan_ucx/ompibase/dependencies/mofed_400/opt/mellanox/hcoll/lib64 conftest.c -lhcoll -lrt -lm -lutil -lz >&5 //usr/lib64/libibnetdisc.so.5: undefined reference to `ibd_mkey' //usr/lib64/libibnetdisc.so.5: undefined reference to `get_mkey_by_portid' //usr/lib64/libibnetdisc.so.5: undefined reference to `is_gi_supported' //usr/lib64/libibnetdisc.so.5: undefined reference to `ibd_mkey_mgr' //usr/lib64/libibnetdisc.so.5: undefined reference to `is_mlnx_ext_port_info_supported' collect2: error: ld returned 1 exit status i.e. it's only missing symbols from libnetdisc.so , but more symbols than it was missing before. My next try will be to install MOFED 4.7 T J (Chris) Ward, IBM Research. Scalable Data-Centric Computing - IBM Spectrum MPI IBM United Kingdom Ltd., Hursley Park, Winchester, Hants, SO21 2JN 011-44-1962-818679 LinkedIn https://www.linkedin.com/in/tjcward/ ResearchGate https://www.researchgate.net/profile/Thomas_Ward16 IBM Research -- Data Centric Systems IBM Supercomputer Marketing IBM Branded Products IBM Branded Swag UNIX in the Cloud - Find A Place Where There's Room To Grow, with the original Open Standard. Free Trial Here Today Protein Folding by Supercomputer - BlueMatter Molecular Dynamics package. Data Tables - In-memory key-value store package. Linux on Windows - Virtualisation package. On the Lighthouse ! Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU