Compiling CTSM for WRF with LILAC on other HPC than Cheyenne

[ziu1986]

Brief summary of bug

When compiling CTSM with LILAC on a HPC other than Cheyenne, e.g. in Norway, the following error occurs:
ERROR: ESMFMKFILE not found None

General bug information

CTSM version you are using: ctsm5.1.dev054

Does this bug cause significantly incorrect results in the model's science? No

Configurations affected: [?]

Details of bug

The offending line is found in WRF-CTSM/CTSM/components/cmeps/cime_config/buildnml.
There, the ESMF software version is checked by looking at the value of the environment variable ESMFMKFILE.
This variable is not set automatically when loading the ESMF module on the Norwegian cluster.
ESMF_LIBDIR was set correctly in the corresponding config_compiler.xml created for the machine, e.g.
<ESMF_LIBDIR>$(EBROOTESMF)/lib</ESMF_LIBDIR>.
EBROOTESMF points to the installation directory of ESMF on that machine.

Workaround: Set ESMFMKFILE by hand before compiling.

Probable solution: The check in WRF-CTSM/CTSM/components/cmeps/cime_config/buildnml should instead check for ESMF_LIBDIR set in the config_compilers.xml.

[billsacks]

In config_machines you can add something like this:

  <environment_variables comp_interface="nuopc">
    <env name="ESMFMKFILE">/Users/sacks/ESMF/esmf8.2.0b18/lib/libO/Darwin.gfortranclang.64.mpich3.default/esmf.mk</env>
  </environment_variables>