forked from mirrors/nixpkgs
80 lines
3.1 KiB
Diff
80 lines
3.1 KiB
Diff
Backport https://github.com/python/cpython/commit/82df3b3071bb003247c33eac4670775e9883c994
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and https://github.com/python/cpython/commit/27ac19cca2c639caaf6fedf3632fe6beb265f24f
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Fixes the check phase of python2Packages.cffi.
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--- a/Lib/ctypes/util.py
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+++ b/Lib/ctypes/util.py
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@@ -87,6 +87,12 @@ 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, errno
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+ def _is_elf(filename):
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+ "Return True if the given file is an ELF file"
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+ elf_header = b'\x7fELF'
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+ with open(filename, 'rb') as thefile:
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+ return thefile.read(4) == elf_header
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+
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def _findLib_gcc(name):
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# Run GCC's linker with the -t (aka --trace) option and examine the
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# library name it prints out. The GCC command will fail because we
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@@ -110,10 +116,17 @@ elif os.name == "posix":
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# the normal behaviour of GCC if linking fails
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if e.errno != errno.ENOENT:
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raise
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- res = re.search(expr, trace)
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+ res = re.findall(expr, trace)
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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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+
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+ for file in res:
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+ # Check if the given file is an elf file: gcc can report
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+ # some files that are linker scripts and not actual
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+ # shared objects. See bpo-41976 for more details
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+ if not _is_elf(file):
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+ continue
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+ return file
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if sys.platform == "sunos5":
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@@ -237,8 +250,37 @@ elif os.name == "posix":
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def _findSoname_ldconfig(name):
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return None
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+ def _findLib_ld(name):
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+ # See issue #9998 for why this is needed
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+ expr = r'[^\(\)\s]*lib%s\.[^\(\)\s]*' % re.escape(name)
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+ cmd = ['ld', '-t']
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+ libpath = os.environ.get('LD_LIBRARY_PATH')
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+ if libpath:
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+ for d in libpath.split(':'):
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+ cmd.extend(['-L', d])
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+ cmd.extend(['-o', os.devnull, '-l%s' % name])
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+ result = None
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+ try:
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+ p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
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+ stderr=subprocess.PIPE,
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+ universal_newlines=True)
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+ out, _ = p.communicate()
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+ res = re.findall(expr, out)
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+ for file in res:
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+ # Check if the given file is an elf file: gcc can report
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+ # some files that are linker scripts and not actual
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+ # shared objects. See bpo-41976 for more details
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+ if not _is_elf(file):
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+ continue
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+ return file
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+ except Exception:
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+ pass # result will be None
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+ return result
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+
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def find_library(name):
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- return _findSoname_ldconfig(name) or _get_soname(_findLib_gcc(name))
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+ # See issue #9998
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+ return _findSoname_ldconfig(name) or \
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+ _get_soname(_findLib_gcc(name)) or _get_soname(_findLib_ld(name))
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################################################################
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# test code
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