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