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2dfc6bb43f
- removed hardcoded lib search pathes - to find system libs/headers, one must point these env vars to them: BORG_OPENSSL_PREFIX - moved some code from setup.py to setup_*.py
40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
# Support code for building a C extension with crypto from OpenSSL
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#
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# Copyright (c) 2016-present, Gregory Szorc (original code for zstd)
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# 2017-present, Thomas Waldmann (mods to make it more generic, code for openssl)
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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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def crypto_ext_kwargs(**kwargs):
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"""amend kwargs with crypto stuff for a distutils.extension.Extension initialization.
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kwargs: distutils.extension.Extension kwargs that should be amended
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returns: amended kwargs
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"""
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def multi_join(paths, *path_segments):
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"""apply os.path.join on a list of paths"""
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return [os.path.join(*(path_segments + (path, ))) for path in paths]
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system_prefix = os.environ.get('BORG_OPENSSL_PREFIX')
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if system_prefix:
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print('Detected system OpenSSL')
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else:
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raise Exception('Could not find OpenSSL lib/headers, please set BORG_OPENSSL_PREFIX')
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include_dirs = kwargs.get('include_dirs', [])
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include_dirs += multi_join(['include'], system_prefix)
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library_dirs = kwargs.get('library_dirs', [])
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library_dirs += multi_join(['lib'], system_prefix)
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libraries = kwargs.get('libraries', [])
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libraries += ['crypto', ]
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ret = dict(**kwargs)
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ret.update(dict(include_dirs=include_dirs, library_dirs=library_dirs, libraries=libraries))
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return ret
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