Changing LD_LIBRARY_PATH at runtime for ctypes

by

By the time a program such as Python is running, the dynamic loader (ld.so.1 or something similar) has already read LD_LIBRARY_PATH and won’t notice any changes thereafter. So, unless the Python software itself evaluates LD_LIBRARY_PATH and uses it to build the possible path name of the library for dlopen() or an equivalent function to use, setting the variable in the script will have no effect.

Given that you say it doesn’t work, it seems plausible to suppose that Python does not build and try all the possible library names; it probably relies on LD_LIBRARY_PATH alone.

More Related Contents:

  1. C function called from Python via ctypes returns incorrect value
  2. Python Ctypes – loading dll throws OSError: [WinError 193] %1 is not a valid Win32 application
  3. Python ctypes cdll.LoadLibrary, instantiate an object, execute its method, private variable address truncated
  4. How do I prevent a C shared library to print on stdout in python?
  5. python ctypes issue on different OSes
  6. WindowsError: [Error 126] The specified module could not be found
  7. Getting data from ctypes array into numpy
  8. How do I convert a Python list into a C array by using ctypes?
  9. Passing Numpy arrays to a C function for input and output
  10. Python & Ctypes: Passing a struct to a function as a pointer to get back data
  11. How can I unload a DLL using ctypes in Python?
  12. Mapping a global variable from a shared library with ctypes
  13. C DLL loads in C++ program, not in python Ctypes
  14. ctypes – Beginner
  15. How to pack and unpack using ctypes (Structure str)
  16. What files are required for Py_Initialize to run?
  17. How to use IFileOperation from ctypes
  18. python ctype recursive structures
  19. Why won’t this ctypes code work with Python 3.3 but will work with Python 2.7?
  20. How do I set the desktop background in python? (windows)
  21. Can’t import dll module in Python
  22. Maximum and minimum value of C types integers from Python
  23. Can I access ImageMagick API with Python?
  24. How to pass a 2d array from Python to C?
  25. ctypes error: libdc1394 error: Failed to initialize libdc1394
  26. Python and ctypes: how to correctly pass “pointer-to-pointer” into DLL?
  27. Sorting list of string with specific locale in python
  28. How to use NumPy array with ctypes?
  29. WindowsError: [Error 126] when loading a DLL with ctypes
  30. stdout redirection with ctypes

Leave a Comment