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lib/header locating: add docs, move env vars querying to setup.py
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parent
7b27082a73
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39
setup.py
39
setup.py
@ -24,19 +24,37 @@
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import setup_crypto
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import setup_docs
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# BORG_USE_BUNDLED_XXX=YES --> use the bundled code
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# How the build process finds the system libs / uses the bundled code:
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#
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# 1. it will try to use (system) libs (see 1.1. and 1.2.),
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# except if you use these env vars to force using the bundled code:
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# BORG_USE_BUNDLED_XXX undefined --> try using system lib
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# BORG_USE_BUNDLED_XXX=YES --> use the bundled code
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# Note: do not use =NO, that is not supported!
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# 1.1. if BORG_LIBXXX_PREFIX is set, it will use headers and libs from there.
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# 1.2. if not and pkg-config can locate the lib, the lib located by
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# pkg-config will be used. We use the pkg-config tool via the pkgconfig
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# python package, which must be installed before invoking setup.py.
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# if pkgconfig is not installed, this step is skipped.
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# 2. if no system lib could be located via 1.1. or 1.2., it will fall back
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# to using the bundled code.
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# needed: lz4 (>= 1.7.0 / r129)
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prefer_system_liblz4 = not bool(os.environ.get('BORG_USE_BUNDLED_LZ4'))
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# needed: zstd (>= 1.3.0)
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prefer_system_libzstd = not bool(os.environ.get('BORG_USE_BUNDLED_ZSTD'))
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# OpenSSL is required as a (system) lib in any case as we do not bundle it.
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# Thus, only step 1.1. and 1.2. apply to openssl (but not 1. and 2.).
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# needed: openssl >=1.0.2 or >=1.1.0 (or compatible)
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system_prefix_openssl = os.environ.get('BORG_OPENSSL_PREFIX')
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# needed: blake2 (>= 0.98.1)
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prefer_system_libb2 = not bool(os.environ.get('BORG_USE_BUNDLED_B2'))
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system_prefix_libb2 = os.environ.get('BORG_LIBB2_PREFIX')
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# needed: lz4 (>= 1.7.0 / r129)
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prefer_system_liblz4 = not bool(os.environ.get('BORG_USE_BUNDLED_LZ4'))
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system_prefix_liblz4 = os.environ.get('BORG_LIBLZ4_PREFIX')
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# needed: zstd (>= 1.3.0)
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prefer_system_libzstd = not bool(os.environ.get('BORG_USE_BUNDLED_ZSTD'))
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system_prefix_libzstd = os.environ.get('BORG_LIBZSTD_PREFIX')
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cpu_threads = multiprocessing.cpu_count() if multiprocessing else 1
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@ -149,14 +167,15 @@ def members_appended(*ds):
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crypto_ext_kwargs = members_appended(
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dict(sources=[crypto_ll_source, crypto_helpers]),
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setup_crypto.crypto_ext_kwargs(pc),
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setup_crypto.b2_ext_kwargs(pc, prefer_system_libb2),
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setup_crypto.crypto_ext_kwargs(pc, system_prefix_openssl),
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setup_crypto.b2_ext_kwargs(pc, prefer_system_libb2, system_prefix_libb2),
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)
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compress_ext_kwargs = members_appended(
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dict(sources=[compress_source]),
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setup_compress.lz4_ext_kwargs(pc, prefer_system_liblz4),
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setup_compress.zstd_ext_kwargs(pc, prefer_system_libzstd, multithreaded=False, legacy=False),
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setup_compress.lz4_ext_kwargs(pc, prefer_system_liblz4, system_prefix_liblz4),
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setup_compress.zstd_ext_kwargs(pc, prefer_system_libzstd, system_prefix_libzstd,
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multithreaded=False, legacy=False),
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)
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ext_modules += [
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@ -69,9 +69,8 @@ def multi_join(paths, *path_segments):
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]
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def zstd_ext_kwargs(pc, prefer_system, multithreaded=False, legacy=False):
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def zstd_ext_kwargs(pc, prefer_system, system_prefix, multithreaded=False, legacy=False):
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if prefer_system:
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system_prefix = os.environ.get('BORG_LIBZSTD_PREFIX')
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if system_prefix:
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print('Detected and preferring libzstd [via BORG_LIBZSTD_PREFIX]')
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return dict(include_dirs=[os.path.join(system_prefix, 'include')],
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@ -114,9 +113,8 @@ def zstd_ext_kwargs(pc, prefer_system, multithreaded=False, legacy=False):
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]
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def lz4_ext_kwargs(pc, prefer_system):
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def lz4_ext_kwargs(pc, prefer_system, system_prefix):
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if prefer_system:
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system_prefix = os.environ.get('BORG_LIBLZ4_PREFIX')
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if system_prefix:
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print('Detected and preferring liblz4 [via BORG_LIBLZ4_PREFIX]')
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return dict(include_dirs=[os.path.join(system_prefix, 'include')],
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@ -8,8 +8,7 @@ def multi_join(paths, *path_segments):
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return [os.path.join(*(path_segments + (path,))) for path in paths]
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def crypto_ext_kwargs(pc):
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system_prefix = os.environ.get('BORG_OPENSSL_PREFIX')
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def crypto_ext_kwargs(pc, system_prefix):
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if system_prefix:
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print('Detected OpenSSL [via BORG_OPENSSL_PREFIX]')
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return dict(include_dirs=[os.path.join(system_prefix, 'include')],
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@ -37,9 +36,8 @@ def crypto_ext_kwargs(pc):
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]
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def b2_ext_kwargs(pc, prefer_system):
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def b2_ext_kwargs(pc, prefer_system, system_prefix):
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if prefer_system:
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system_prefix = os.environ.get('BORG_LIBB2_PREFIX')
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if system_prefix:
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print('Detected and preferring libb2 [via BORG_LIBB2_PREFIX]')
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return dict(include_dirs=[os.path.join(system_prefix, 'include')],
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