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gh-71052: Implement ctypes.util.find_library
on Android (GH-116379)
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@ -1334,8 +1334,9 @@ Here are some examples::
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'libbz2.so.1.0'
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>>>
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On macOS, :func:`~ctypes.util.find_library` tries several predefined naming schemes and paths
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to locate the library, and returns a full pathname if successful::
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On macOS and Android, :func:`~ctypes.util.find_library` uses the system's
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standard naming schemes and paths to locate the library, and returns a full
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pathname if successful::
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>>> from ctypes.util import find_library
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>>> find_library("c")
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@ -89,6 +89,15 @@ def find_library(name):
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from ctypes._aix import find_library
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elif sys.platform == "android":
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def find_library(name):
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directory = "/system/lib"
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if "64" in os.uname().machine:
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directory += "64"
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fname = f"{directory}/lib{name}.so"
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return fname if os.path.isfile(fname) else None
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elif os.name == "posix":
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# Andreas Degert's find functions, using gcc, /sbin/ldconfig, objdump
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import re, tempfile
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@ -129,5 +129,28 @@ def test_gh114257(self):
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self.assertIsNone(find_library("libc"))
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@unittest.skipUnless(sys.platform == 'android', 'Test only valid for Android')
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class FindLibraryAndroid(unittest.TestCase):
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def test_find(self):
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for name in [
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"c", "m", # POSIX
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"z", # Non-POSIX, but present on Linux
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"log", # Not present on Linux
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]:
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with self.subTest(name=name):
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path = find_library(name)
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self.assertIsInstance(path, str)
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self.assertEqual(
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os.path.dirname(path),
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"/system/lib64" if "64" in os.uname().machine
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else "/system/lib")
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self.assertEqual(os.path.basename(path), f"lib{name}.so")
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self.assertTrue(os.path.isfile(path), path)
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for name in ["libc", "nonexistent"]:
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with self.subTest(name=name):
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self.assertIsNone(find_library(name))
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if __name__ == "__main__":
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unittest.main()
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@ -0,0 +1 @@
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Implement :func:`ctypes.util.find_library` on Android.
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