CMake Fix missing MPI preprocessor definition #271
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The preprocessor definition
_MPIis used to compile WPS with distributed memory capabilities. This define is missing from the set applied whenUSE_MPIis selected in the CMake build. This will result in serial-like behavior even when all the MPI libraries and includes are being used properly during compilation.This PR adds the
_MPIcompile definition to the set of MPI-specific definitions in the CMake build.