Changing LD_LIBRARY_PATH at runtime for ctypes

Question

How do you update this environment variable at runtime so that ctypes can load a library wherever? I\'ve tried the following and neither seem to work.

from c         


        

Answer 1

Compile your binary with a rpath relative to the current working directory like:

gcc -shared -o yourbinary.so yoursource.c otherbinary.so \
    -Wl,-rpath='.',-rpath='./another/relative/rpath' -fpic

Then, you are able to change the working directory in python at runtime with:

import os
os.chdir('/path/to/your/binaries')

Like this, the loader also finds other dynamic libraries like otherbinary.so