Conda port issues

[tcraig]

There are a few issues in the latest conda install as implemented in CICE.

You may need to install some xcode tools. To do so, try "xcode-select --install".

There is also a bug in the latest conda software. If you compile a case in CICE that uses OpenMP but NOT MPI (i.e. -p 1x2), you may see this error,

Undefined symbols for architecture x86_64:
"___emutls_get_address", referenced from:
___ice_dyn_evp_1d_MOD_domp_init._omp_fn.0 in ice_dyn_evp_1d.o
___ice_dyn_evp_1d_MOD_domp_get_domain_rlu in ice_dyn_evp_1d.o

This can be reconciled by adding "-lgcc_eh" to the link step. This would be done in the Macros file and might look something like this (the ifneq block is new),

# Libraries to be passed to the linker
SLIBS := -L$(CONDA_PREFIX)/lib -lnetcdf -lnetcdff -llapack
ifneq ($(ICE_COMMDIR), mpi)
SLIBS += -lgcc_eh
endif

We will report the bug and may consider implementing some work-arounds in CICE if this is not fixed soon. Feel free to report any other conda issues as they arise.

 

[tcraig]

The conda -lgcc_eh issue has been resolved in the latest conda-forge version. Program with threadprivate OpenMP directive needs to link with '-lgcc_eh', or else "Undefined symbols for architecture x86_64: "___emutls_get_address"" · Issue #36 · conda-forge/gfortran_impl_osx-64-feedstock. If you run into this problem, consider reinstalling miniconda as described in the user guide.