8000 [2.7] bpo-21622 ctypes.util find_library walk LD_LIBRARY_PATH (GH-10453) by jcastillo2nd · Pull Request #10455 · python/cpython · GitHub
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[2.7] bpo-21622 ctypes.util find_library walk LD_LIBRARY_PATH (GH-10453) #10455

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[2.7] bpo-21622 ctypes.util find_library walk LD_LIBRARY_PATH (GH-10453) #10455

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0e3163f
Issue #21622 Walk LD_LIBRARY_PATH for library
jcastillo2nd Nov 10, 2018
14096d1
Style update
jcastillo2nd Nov 10, 2018
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Issue #21622 Walk LD_LIBRARY_PATH for library 
FIXES bpo-21622 for 2.7
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@jcastillo2nd
jcastillo2nd authored Nov 10, 2018
commit 0e3163f48ce5cce50fd8e7a0f70c90881aa75fc2
28 changes: 27 additions & 1 deletion Lib/ctypes/util.py
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Ori 8000 ginal file line number Diff line number Diff line change
Expand Up @@ -270,8 +270,34 @@ def _findSoname_ldconfig(name):
return None
return res.group(1)

def _findWalk_ldpath(name):
def _is_elf(filepath):
try:
with open(filepath, 'rb') as fh:
return fh.read(4) == b'\x7fELF'
except:
return False
from glob import glob

if os.path.isabs(name):
return name
# search LD_LIBRARY_PATH list
paths = os.environ.get('LD_LIBRARY_PATH', '').split(':')
if paths:
for d in paths:
f = os.path.join(d, name)
if _is_elf(f):
return os.path.basename(f)
prefix = os.path.join(d, 'lib'+name)
for suffix in ['.so', '.so.*']:
for f in glob('{0}{1}'.format(prefix, suffix)):
if _is_elf(f):
return os.path.basename(f)

def find_library(name):
return _findSoname_ldconfig(name) or _get_soname(_findLib_gcc(name))
return _findSoname_ldconfig(name) or \
_get_soname(_findLib_gcc(name)) or \
_findWalk_ldpath(name)

################################################################
# test code
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0