hwloc in OpenMPI self-built code uses CUDA and OpenCL

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Issue #2205 resolved
Roland Haas created an issue

This causes problems since we do not then link against CUDA or OpenCL. This happens even if one passes the --with-cuda=no option to OpenMPI's configure script.

Possibly one has to follow the fix in OpenMPI's 2.x and 3.x branches to fix this: https://github.com/open-mpi/ompi/issues/4248

Keyword: MPI

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