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- import distutils.command.build_clib as orig
- from distutils.errors import DistutilsSetupError
- from distutils import log
- from setuptools.dep_util import newer_pairwise_group
-
-
- class build_clib(orig.build_clib):
- """
- Override the default build_clib behaviour to do the following:
-
- 1. Implement a rudimentary timestamp-based dependency system
- so 'compile()' doesn't run every time.
- 2. Add more keys to the 'build_info' dictionary:
- * obj_deps - specify dependencies for each object compiled.
- this should be a dictionary mapping a key
- with the source filename to a list of
- dependencies. Use an empty string for global
- dependencies.
- * cflags - specify a list of additional flags to pass to
- the compiler.
- """
-
- def build_libraries(self, libraries):
- for (lib_name, build_info) in libraries:
- sources = build_info.get('sources')
- if sources is None or not isinstance(sources, (list, tuple)):
- raise DistutilsSetupError(
- "in 'libraries' option (library '%s'), "
- "'sources' must be present and must be "
- "a list of source filenames" % lib_name)
- sources = list(sources)
-
- log.info("building '%s' library", lib_name)
-
- # Make sure everything is the correct type.
- # obj_deps should be a dictionary of keys as sources
- # and a list/tuple of files that are its dependencies.
- obj_deps = build_info.get('obj_deps', dict())
- if not isinstance(obj_deps, dict):
- raise DistutilsSetupError(
- "in 'libraries' option (library '%s'), "
- "'obj_deps' must be a dictionary of "
- "type 'source: list'" % lib_name)
- dependencies = []
-
- # Get the global dependencies that are specified by the '' key.
- # These will go into every source's dependency list.
- global_deps = obj_deps.get('', list())
- if not isinstance(global_deps, (list, tuple)):
- raise DistutilsSetupError(
- "in 'libraries' option (library '%s'), "
- "'obj_deps' must be a dictionary of "
- "type 'source: list'" % lib_name)
-
- # Build the list to be used by newer_pairwise_group
- # each source will be auto-added to its dependencies.
- for source in sources:
- src_deps = [source]
- src_deps.extend(global_deps)
- extra_deps = obj_deps.get(source, list())
- if not isinstance(extra_deps, (list, tuple)):
- raise DistutilsSetupError(
- "in 'libraries' option (library '%s'), "
- "'obj_deps' must be a dictionary of "
- "type 'source: list'" % lib_name)
- src_deps.extend(extra_deps)
- dependencies.append(src_deps)
-
- expected_objects = self.compiler.object_filenames(
- sources,
- output_dir=self.build_temp,
- )
-
- if (
- newer_pairwise_group(dependencies, expected_objects)
- != ([], [])
- ):
- # First, compile the source code to object files in the library
- # directory. (This should probably change to putting object
- # files in a temporary build directory.)
- macros = build_info.get('macros')
- include_dirs = build_info.get('include_dirs')
- cflags = build_info.get('cflags')
- self.compiler.compile(
- sources,
- output_dir=self.build_temp,
- macros=macros,
- include_dirs=include_dirs,
- extra_postargs=cflags,
- debug=self.debug
- )
-
- # Now "link" the object files together into a static library.
- # (On Unix at least, this isn't really linking -- it just
- # builds an archive. Whatever.)
- self.compiler.create_static_lib(
- expected_objects,
- lib_name,
- output_dir=self.build_clib,
- debug=self.debug
- )
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