bug: Cannot locate libctranslate2.so.4 when repairing Python wheel

[yzewei]

Description:
When building the CTranslate2 wheel on Linux, running auditwheel repair fails because it cannot locate the shared library, preventing the wheel from being properly packaged and installed.

Platform and OS:

• Platform: x86_64
• OS: Fedora 41

Steps to reproduce:

1. Build the wheel:

python -m pip wheel . -w dist

2. Attempt to repair the wheel:

auditwheel repair dist/ctranslate2-4.6.0-cp311-cp311-linux_x86_64.whl

Error message:

INFO:auditwheel.main_repair:Repairing ctranslate2-4.6.0-cp311-cp311-linux_x86_64.whl
INFO:auditwheel.wheel_abi:setting libc to glibc
Traceback (most recent call last):
  File "/usr/local/bin/auditwheel", line 7, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/local/lib/python3.11/site-packages/auditwheel/main.py", line 53, in main
    result: int | None = args.func(args, p)
                         ^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/auditwheel/main_repair.py", line 255, in execute
    out_wheel = repair_wheel(
                ^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/auditwheel/repair.py", line 89, in repair_wheel
    raise ValueError(msg)
ValueError: Cannot repair wheel, because required library "libctranslate2.so.4" could not be located

Additional information / Suggestions:

• This issue occurs on Linux and may cause the installed wheel to fail on import.
• A possible solution is to include libctranslate2.so, libctranslate2.so.4, etc., in the wheel via setup.py or ensure the shared libraries are installed in a system library path during CI builds.