[Ipopt] Question about mpi.h

[Jiahui Wang]

Hi,

I am trying to compile IpOpt with MUMPS, and got the following error when making the software:

IpMumpsSolverInterface.cpp:20:18: error: mpi.h: No such file or directory

Does anyone know what version of mpi.h this is supposed to be and where I can find it? Thanks for the help!

Jeff
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