mirror of https://github.com/python/cpython
patch #1610795: BSD version of ctypes.util.find_library, by Martin
Kammerhofer. release25-maint backport candidate, but the release manager has to decide.
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commit
d059e7b423
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@ -46,23 +46,16 @@ elif os.name == "posix":
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import re, tempfile, errno
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def _findLib_gcc(name):
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expr = '[^\(\)\s]*lib%s\.[^\(\)\s]*' % name
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expr = r'[^\(\)\s]*lib%s\.[^\(\)\s]*' % re.escape(name)
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fdout, ccout = tempfile.mkstemp()
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os.close(fdout)
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cmd = 'if type gcc &>/dev/null; then CC=gcc; else CC=cc; fi;' \
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cmd = 'if type gcc >/dev/null 2>&1; then CC=gcc; else CC=cc; fi;' \
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'$CC -Wl,-t -o ' + ccout + ' 2>&1 -l' + name
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try:
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fdout, outfile = tempfile.mkstemp()
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os.close(fdout)
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fd = os.popen(cmd)
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trace = fd.read()
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err = fd.close()
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f = os.popen(cmd)
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trace = f.read()
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f.close()
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finally:
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try:
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os.unlink(outfile)
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except OSError, e:
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if e.errno != errno.ENOENT:
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raise
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try:
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os.unlink(ccout)
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except OSError, e:
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@ -73,29 +66,58 @@ elif os.name == "posix":
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return None
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return res.group(0)
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def _findLib_ld(name):
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expr = '/[^\(\)\s]*lib%s\.[^\(\)\s]*' % name
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res = re.search(expr, os.popen('/sbin/ldconfig -p 2>/dev/null').read())
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if not res:
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# Hm, this works only for libs needed by the python executable.
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cmd = 'ldd %s 2>/dev/null' % sys.executable
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res = re.search(expr, os.popen(cmd).read())
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if not res:
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return None
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return res.group(0)
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def _get_soname(f):
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# assuming GNU binutils / ELF
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if not f:
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return None
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cmd = "objdump -p -j .dynamic 2>/dev/null " + f
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res = re.search(r'\sSONAME\s+([^\s]+)', os.popen(cmd).read())
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if not res:
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return None
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return res.group(1)
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def find_library(name):
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lib = _findLib_ld(name) or _findLib_gcc(name)
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if not lib:
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return None
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return _get_soname(lib)
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if (sys.platform.startswith("freebsd")
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or sys.platform.startswith("openbsd")
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or sys.platform.startswith("dragonfly")):
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def _num_version(libname):
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# "libxyz.so.MAJOR.MINOR" => [ MAJOR, MINOR ]
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parts = libname.split(".")
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nums = []
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try:
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while parts:
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nums.insert(0, int(parts.pop()))
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except ValueError:
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pass
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return nums or [ sys.maxint ]
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def find_library(name):
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ename = re.escape(name)
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expr = r':-l%s\.\S+ => \S*/(lib%s\.\S+)' % (ename, ename)
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res = re.findall(expr,
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os.popen('/sbin/ldconfig -r 2>/dev/null').read())
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if not res:
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return _get_soname(_findLib_gcc(name))
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res.sort(cmp= lambda x,y: cmp(_num_version(x), _num_version(y)))
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return res[-1]
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else:
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def _findLib_ldconfig(name):
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# XXX assuming GLIBC's ldconfig (with option -p)
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expr = r'/[^\(\)\s]*lib%s\.[^\(\)\s]*' % re.escape(name)
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res = re.search(expr,
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os.popen('/sbin/ldconfig -p 2>/dev/null').read())
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if not res:
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# Hm, this works only for libs needed by the python executable.
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cmd = 'ldd %s 2>/dev/null' % sys.executable
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res = re.search(expr, os.popen(cmd).read())
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if not res:
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return None
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return res.group(0)
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def find_library(name):
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return _get_soname(_findLib_ldconfig(name) or _findLib_gcc(name))
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################################################################
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# test code
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