[gmx-users] Error when compiling 2019.2 with -DGMX_MPI=ON

[Mark Abraham]

Hi Dallas,

The install guide tries to provide the hint to use the MPI wrapper
compilers (mpicc and mpicxx) that are installed alongside the MPI package
you installed (but maybe as part of the *mpi-dev package) . Perhaps we can
make that more clear. (And if you do, there's no need to set GMX_MPI, as
the build system will see what your intent is.) The symptoms you report
look very much like those that mpicc will handle internally.
Mark