# This directory tree contains the ESMF related files inside the SWMF.
# The ESMF library most be installed and the
# environment variable ESMFMKFILE must be set. 

# The ESMF library can be downloaded with

gitclone ESMF

# Environment variables to set for installation of ESMF:
setenv ESMF_DIR <top of ESMF source> 
setenv ESMF_COMPILER gfortran/gfortranclang/nag
setenv ESMF_COMM mpich/openmpi/mpt
setenv ESMF_BOPT g
setenv ESMF_INSTALL_PREFIX ABSOLUTEPATHTOESMFINSTALLDIR

# Installing the ESMF
cd ${ESMF_DIR}
make
make install

# This should be in the .cshrc file (or equivalent):
setenv ESMFMKFILE ABSOLUTEPATHTOESMFINSTALLDIR/lib/libg/SOMENAME/esmf.mk

# Testing
cd SWMFTOPDIR
make -j test_esmf

# It the test works, it  produces an empty ESMF/ESMF_SWMF/test_esmf.diff
# file, otherwise the file contains information about the failure.