While the previous recipes required us to explicitly declare the Python—C interface and to map Python names to C(++) symbols, Python CFFI infers this mapping on its own from the C header file (in our case, account.h). The only thing we need to provide to our Python CFFI layer is the header file describing the C interface and a shared library containing the symbols. We have done this using environment variable set in the main CMakeLists.txt file, and these environment variables are queried in __init__.py:
# ...def get_lib_handle(definitions, header_file, library_file): ffi = FFI() command = ['cc', '-E'] + definitions + [header_file] interface = check_output(command).decode('utf-8') # remove possible \r characters on windows which ...
