This is an optional compilation step in addition to Installation of the Python3 bindings which makes the code as fast as the original ecCodes module.
To test the much faster CFFI API level, out-of-line mode you need the ecCodes header files. Then you need to clone the repo in the same folder as your ecCodes source tree, make a pip development install and custom compile the binary bindings following these steps:
# Clone the repository to the same folder of your ecCodes source tree:
% git clone https://github.com/ecmwf/eccodes-python
% cd eccodes-python
# Make a pip development install:
% pip install -e .
# Copy ecCodes header files from ecCodes installation to Python3 include directory:
% cp {ECCODES_DIR}/include/*.h {PYTHON3_DIR}/include/python3.X/
# Compile the binary bindings:
% python3 builder.py |