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internally forward LAMMPSHOME environment variable, if present, to PYTHONHOME

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Axel Kohlmeyer
2021-05-27 12:39:25 -04:00
parent 76a472d8b8
commit a660f286b1
1 changed files with 10 additions and 0 deletions
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src/lammps.cpp
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@ -130,6 +130,16 @@ LAMMPS::LAMMPS(int narg, char **arg, MPI_Comm communicator) :
init_pkg_lists();
#if defined(LMP_PYTHON) && defined(_WIN32)
// if the LAMMPSHOME environment variable is set, it should point
// to the location of the LAMMPS installation tree where we bundle
// the matching Python installation for use with the PYTHON package.
// this is currently only used on Windows with the windows installer packages
const char *lmpenv = getenv("LAMMPSHOME");
if (lmpenv) {
_putenv(utils::strdup(fmt::format("PYTHONHOME={}",lmpenv)));
}
#endif
// check if -mpicolor is first arg
// if so, then 2 apps were launched with one mpirun command
// this means passed communicator (e.g. MPI_COMM_WORLD) is bigger than LAMMPS