[New-bugs-announce] [issue2145] ctypes.util.find_library(): posix .so without SONAME

[STINNER Victor]

New submission from STINNER Victor:

ctypes.util.find_library() fails to locate distorm64.so library 
because it has no SONAME entry:

$ objdump -p -j .dynamic /usr/local/lib/libdistorm64.so
/usr/local/lib/libdistorm64.so:     file format elf32-i386
(...)
Dynamic Section:
  NEEDED      libc.so.6
  INIT        0x12f4c
  FINI        0x1bf84
  HASH        0xb4
  (...)

Compare to libm.so:

$ objdump -p -j .dynamic /usr/lib/libm.so
/usr/lib/libm.so:     file format elf32-i386
(...)
Dynamic Section:
  NEEDED      ld-linux.so.2
  NEEDED      libc.so.6
  SONAME      libm.so.6
  INIT        0x335c
  (...)

I don't know why find_library() does use objdump to get SONAME.

Workaround to find_library() "bug": _get_soname() should return 
os.path.basename(f) instead of None. Is it correct?

Note: libdistorm64.so compilation is maybe broken (it's maybe not 
a "real" so library), but I'm able to use it with ctypes :-)

----------
components: Library (Lib)
messages: 62580
nosy: haypo
severity: normal
status: open
title: ctypes.util.find_library(): posix .so without SONAME
type: rfe
versions: Python 2.5

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<http://bugs.python.org/issue2145>
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