| """ |
| Tool to run Cython files (.pyx) into .c and .cpp. |
| |
| TODO: |
| - Add support for dynamically selecting in-process Cython |
| through CYTHONINPROCESS variable. |
| - Have a CYTHONCPP option which turns on C++ in flags and |
| changes output extension at the same time |
| |
| VARIABLES: |
| - CYTHON - The path to the "cython" command line tool. |
| - CYTHONFLAGS - Flags to pass to the "cython" command line tool. |
| |
| AUTHORS: |
| - David Cournapeau |
| - Dag Sverre Seljebotn |
| |
| """ |
| import SCons |
| from SCons.Builder import Builder |
| from SCons.Action import Action |
| |
| #def cython_action(target, source, env): |
| # print target, source, env |
| # from Cython.Compiler.Main import compile as cython_compile |
| # res = cython_compile(str(source[0])) |
| |
| cythonAction = Action("$CYTHONCOM") |
| |
| def create_builder(env): |
| try: |
| cython = env['BUILDERS']['Cython'] |
| except KeyError: |
| cython = SCons.Builder.Builder( |
| action = cythonAction, |
| emitter = {}, |
| suffix = cython_suffix_emitter, |
| single_source = 1) |
| env['BUILDERS']['Cython'] = cython |
| |
| return cython |
| |
| def cython_suffix_emitter(env, source): |
| return "$CYTHONCFILESUFFIX" |
| |
| def generate(env): |
| env["CYTHON"] = "cython" |
| env["CYTHONCOM"] = "$CYTHON $CYTHONFLAGS -o $TARGET $SOURCE" |
| env["CYTHONCFILESUFFIX"] = ".c" |
| |
| c_file, cxx_file = SCons.Tool.createCFileBuilders(env) |
| |
| c_file.suffix['.pyx'] = cython_suffix_emitter |
| c_file.add_action('.pyx', cythonAction) |
| |
| c_file.suffix['.py'] = cython_suffix_emitter |
| c_file.add_action('.py', cythonAction) |
| |
| create_builder(env) |
| |
| def exists(env): |
| try: |
| # import Cython |
| return True |
| except ImportError: |
| return False |
