Hey all,
This has been brought up before (sort of) here:
http://thread.gmane.org/gmane.comp.programming.tools.cmake.user/26533
FindMPI doesn't currently give you the libraries, includes, etc. for different
languages. MPI compilers can (and typically do) have different
includes/libraries depending on the language you're using. It was noted above
that you don't get the fortran libraries for MPI using the current macro.
Another problem with the current setup is that you're also likely to
inadvertently get the C++ includes with the current FindMPI, unless you
explicitly disable them using things like -DOMPI_SKIP_MPICXX. This can get you
unwanted C++ symbols in your MPI libraries (because the MPI C++ interface and
headers suck, but that's a whole different story).
I'd be interested in fixing this. But I would like guidance on how to do it.
My inclination would be to make a new version that gives you not just
MPI_FOUND, MPI_LIBRARIES, etc.. but MPI_<LANG>_FOUND, MPI_<LANG>_LIBRARIES,
MPI_<LANG>_INCLUDE_PATH, etc. If you read the thread above, someone suggested
using components for this back in January, but that was left on the table and
seems not to have been implemented.
What's the best way to implement proper language support in the FindMPI module?
-Todd
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