I have built an .so file used in our python package. We use the package on Dietpi 64bits. When I import our package I get the error:
OSError: file.so: cannot open shared object file: No such file or directory
I know for a fact that the file is there and the path is good.
What is puzzling me is that when I try the same code on a Virtual Machine (also Diepi 64bit), the dynamic library is found and loaded properly. I did that to try an isolate the difference between my setup and my colleague's setup.
- File exists
- Same location in both cases
- File has the same rights (chmod 777)
- He is using python 3.6, while VM 3.7
What am I missing? What can cause the OS to raise a No such file or directory exception when the directory DOES exists and file IS there?
Edit
Here is the code that I'm using
import os
import ctypes
shared_library_name = "libFoo"
print("current working directory: {}\n".format(os.getcwd()))
current_path = str(os.path.dirname(os.path.abspath(__file__)) + "/natives/")
os.chdir(current_path)
current_path = os.path.abspath(os.getcwd())
path_to_so = os.path.abspath(current_path + "/" + shared_library_name + ".so")
print("new current_path: ", current_path)
print("\n path_to_so: {}\n".format(path_to_so))
# prints the right path with the right file, and I can cd to it in the terminal
print("path exist {}".format(os.path.isdir(current_path)))
print("file exist {}\n".format(os.path.isfile(path_to_so)))
# prints False
dll = ctypes.cdll.LoadLibrary(path_to_so)
# fails saying that the file is not there...
