py3_a: mstch_py3 src/a.thrift
py3_s: mstch_py3 src/s.thrift
python_s: mstch_python src/s.thrift
python_capi_s: mstch_python_capi src/s.thrift
python_b: mstch_python src/b.thrift
python_capi_b: mstch_python_capi src/b.thrift
python_c: mstch_python src/c.thrift
python_capi_c: mstch_python_capi src/c.thrift