Mamba installation

Installing Miniforge

CMOR 3.9.0 on conda-forge has support for Python 3.9, 3.10, 3.11, and 3.12.
Download the Miniforge installer for your system.
- CMOR is currently only supported for Linux and macOS x86_64, and macOS arm64 (Apple Silicon)
Start the install with the following command
```
bash Miniforge3-$(uname)-$(uname -m).sh
```

Installing CMOR and PrePARE

Run the following commands

# install cmor
# ------------------------------------------------
mamba create -n CMOR -c conda-forge cmor
mamba activate CMOR

# Clone the CMIP6 table to your working directory.
# ------------------------------------------------
mkdir CMIP6_work
cd  CMIP6_work
git clone https://github.com/PCMDI/cmip6-cmor-tables.git

# Note:
# -----------------------------------------------------------
# UDUNITS2_XML_PATH is set automatically by activating CMOR. 
# export UDUNITS2_XML_PATH=${CONDA_PREFIX}/share/udunits/udunits2.xml
#

Testing

Run the full test suite for C, Fortran, and Python

Clone CMOR code and CMIP6 tables

# Clone the CMOR repository to your working directory.
# ------------------------------------------------
git clone https://github.com/PCMDI/cmor.git
cd cmor

# Update the CMIP6 tables submodule.
# ------------------------------------------------
git submodule init
git submodule update

Install gcc and gfortran and linking environment variable

Linux:

mamba install -n CMOR -c conda-forge gcc_linux-64 gfortran_linux-64
export LDSHARED_FLAGS="-shared -pthread"

Mac:

mamba install -n CMOR -c conda-forge clang_osx-64 gfortran_osx-64
export LDSHARED_FLAGS=" -bundle -undefined dynamic_lookup"

Build and run tests

# Set prefix for configure step.
# ------------------------------------------------
export PREFIX=$(python -c "import sys; print(sys.prefix)")

# Configure the Makefile.
# ------------------------------------------------
./configure --prefix=$PREFIX --with-python --with-uuid=$PREFIX --with-json-c=$PREFIX --with-udunits2=$PREFIX --with-netcdf=$PREFIX  --enable-verbose-test

# Run the tests with the Makefile (without rebuilding CMOR).
# ------------------------------------------------
make test -o cmor -o python

Mamba environment

Create your different CMOR environment with mamba.

mamba create -n [YOUR_ENV_NAME_HERE] -c conda-forge cmor
mamba activate [YOUR_ENV_NAME_HERE]

To learn more about mamba environments

Obtaining Nighlty builds

Create a dedicated environment for nightly (in between releases code):

mamba create -n [YOUR_ENV_NAME_HERE] -c pcmdi/label/nightly -c conda-forge cmor
mamba activate [YOUR_ENV_NAME_HERE]

Create an environment with compilers for development/testing:

mamba create -n [YOUR_ENV_NAME_HERE] -c pcmdi/label/nightly -c conda-forge cmor gcc_linux-64 gfortran_linux-64
mamba activate [YOUR_ENV_NAME_HERE]

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