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# Copyright (c) 2016-present, Gregory Szorc
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# All rights reserved.
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#
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# This software may be modified and distributed under the terms
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# of the BSD license. See the LICENSE file for details.
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import os
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from distutils.extension import Extension
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zstd_sources = ['zstd/%s' % p for p in (
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'common/entropy_common.c',
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'common/error_private.c',
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'common/fse_decompress.c',
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'common/pool.c',
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'common/threading.c',
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'common/xxhash.c',
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'common/zstd_common.c',
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'compress/fse_compress.c',
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'compress/huf_compress.c',
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'compress/zstd_compress.c',
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'compress/zstdmt_compress.c',
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'decompress/huf_decompress.c',
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'decompress/zstd_decompress.c',
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'dictBuilder/cover.c',
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'dictBuilder/divsufsort.c',
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'dictBuilder/zdict.c',
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)]
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zstd_sources_legacy = ['zstd/%s' % p for p in (
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'deprecated/zbuff_common.c',
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'deprecated/zbuff_compress.c',
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'deprecated/zbuff_decompress.c',
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'legacy/zstd_v01.c',
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'legacy/zstd_v02.c',
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'legacy/zstd_v03.c',
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'legacy/zstd_v04.c',
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'legacy/zstd_v05.c',
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'legacy/zstd_v06.c',
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'legacy/zstd_v07.c'
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)]
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zstd_includes = [
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'c-ext',
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'zstd',
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'zstd/common',
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'zstd/compress',
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'zstd/decompress',
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'zstd/dictBuilder',
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]
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zstd_includes_legacy = [
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'zstd/deprecated',
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'zstd/legacy',
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]
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ext_sources = [
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'zstd.c',
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'c-ext/bufferutil.c',
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'c-ext/compressiondict.c',
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'c-ext/compressobj.c',
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'c-ext/compressor.c',
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'c-ext/compressoriterator.c',
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'c-ext/compressionparams.c',
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'c-ext/compressionwriter.c',
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'c-ext/constants.c',
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'c-ext/decompressobj.c',
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'c-ext/decompressor.c',
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'c-ext/decompressoriterator.c',
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'c-ext/decompressionwriter.c',
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'c-ext/frameparams.c',
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]
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zstd_depends = [
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'c-ext/python-zstandard.h',
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]
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def get_c_extension(support_legacy=False, name='zstd'):
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"""Obtain a distutils.extension.Extension for the C extension."""
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root = os.path.abspath(os.path.dirname(__file__))
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sources = [os.path.join(root, p) for p in zstd_sources + ext_sources]
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if support_legacy:
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sources.extend([os.path.join(root, p) for p in zstd_sources_legacy])
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include_dirs = [os.path.join(root, d) for d in zstd_includes]
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if support_legacy:
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include_dirs.extend([os.path.join(root, d) for d in zstd_includes_legacy])
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depends = [os.path.join(root, p) for p in zstd_depends]
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extra_args = ['-DZSTD_MULTITHREAD']
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if support_legacy:
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extra_args.append('-DZSTD_LEGACY_SUPPORT=1')
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# TODO compile with optimizations.
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return Extension(name, sources,
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include_dirs=include_dirs,
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depends=depends,
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extra_compile_args=extra_args)
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