def test_ldconfig_cache():
utils.load_ldconfig_cache()
libpath = None
for soname in utils.LDCONFIG_CACHE:
if soname.startswith('libc.so.'):
libpath = utils.LDCONFIG_CACHE[soname]
break
assert libpath, 'libc.so not found'
assert os.path.isfile(libpath)
def findLibrary(name):
"""
Look for a library in the system.
Emulate the algorithm used by dlopen.
`name`must include the prefix, e.g. ``libpython2.4.so``
"""
assert compat.is_unix, \
"Current implementation for Unix only (Linux, Solaris, AIX, FreeBSD)"
lib = None
# Look in the LD_LIBRARY_PATH according to platform.
if compat.is_aix:
lp = compat.getenv('LIBPATH', '')
elif compat.is_darwin:
lp = compat.getenv('DYLD_LIBRARY_PATH', '')
else:
lp = compat.getenv('LD_LIBRARY_PATH', '')
for path in lp.split(os.pathsep):
libs = glob(os.path.join(path, name + '*'))
if libs:
lib = libs[0]
break
# Look in /etc/ld.so.cache
# Solaris does not have /sbin/ldconfig. Just check if this file exists.
if lib is None:
utils.load_ldconfig_cache()
lib = utils.LDCONFIG_CACHE.get(name)
if lib:
assert os.path.isfile(lib)
# Look in the known safe paths.
if lib is None:
# Architecture independent locations.
paths = ['/lib', '/usr/lib']
# Architecture dependent locations.
if compat.architecture == '32bit':
paths.extend(['/lib32', '/usr/lib32', '/usr/lib/i386-linux-gnu'])
else:
paths.extend(['/lib64', '/usr/lib64', '/usr/lib/x86_64-linux-gnu'])
# On Debian/Ubuntu /usr/bin/python is linked statically with libpython.
# Newer Debian/Ubuntu with multiarch support putsh the libpythonX.Y.so
# To paths like /usr/lib/i386-linux-gnu/.
try:
# Module available only in Python 2.7+
import sysconfig
# 'multiarchsubdir' works on Debian/Ubuntu only in Python 2.7 and 3.3+.
arch_subdir = sysconfig.get_config_var('multiarchsubdir')
# Ignore if None is returned.
if arch_subdir:
arch_subdir = os.path.basename(arch_subdir)
paths.append(os.path.join('/usr/lib', arch_subdir))
else:
logger.debug('Multiarch directory not detected.')
except ImportError:
logger.debug('Multiarch directory not detected.')
if compat.is_aix:
paths.append('/opt/freeware/lib')
elif compat.is_hpux:
if compat.architecture == '32bit':
paths.append('/usr/local/lib/hpux32')
else:
paths.append('/usr/local/lib/hpux64')
elif compat.is_freebsd or compat.is_openbsd:
paths.append('/usr/local/lib')
for path in paths:
libs = glob(os.path.join(path, name + '*'))
if libs:
lib = libs[0]
break
# give up :(
if lib is None:
return None
# Resolve the file name into the soname
if compat.is_freebsd or compat.is_aix or compat.is_openbsd:
# On FreeBSD objdump doesn't show SONAME,
# and on AIX objdump does not exist,
# so we just return the lib we've found
return lib
else:
dir = os.path.dirname(lib)
return os.path.join(dir, _get_so_name(lib))