This repository contains the tools necessary for downloading the latest Standards of Fundamental Astronomy (SOFA) library and converting it to ERFA, a BSD-licensed code.
To download the latest SOFA and use it to generate ERFA source code, just do:
python sofa_deriver.py
which should generate an erfa directory with all the source code.
To see more options, do python sofa_deriver.py --help
To compile and execute the tests, do:
[CC] erfa/*.c -lm -o test_erfa
./test_erfa --verbose
where [CC] is replaced by your preferred C compiler.
source_flattener.py is provided to condense the source code into
a single file. Just do:
python source_flattener.py
to get out erfa.c and erfa.h. In general you probably do not want to
do this in the erfa-fetch repository, though, as it won't include any
bugfixes in ERFA that have not yet been included in SOFA. Instead, do this
in the actual erfa repository:
python source_flattener.py src -n erfa