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@dutkalex dutkalex commented Jan 7, 2026

To the best of my understanding, hdf5 only needs the C API for MPI (and in particular does not need the C++ binding which are a recurring source of configuration/build problems in practice). Therefore, the find_package(MPI) call can be modified to only look for the C library, which also simplifies a little bit the error checking (if the find package call succeeds, then MPI_C_FOUND is true).

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@dutkalex , thank you for PR!

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