• DepthAI

  • Problem running python3 depthai_demo.py

I running under OSX 10.13. Installation went okay, buta I get the following error message when trying to run the demo:

Traceback (most recent call last):
File "/Users/edwardwall/Documents/Repository/depthai/depthai_demo.py", line 9, in <module>
import depthai
ImportError: dlopen(/Users/edwardwall/Documents/Repository/depthai/venv/lib/python3.9/site-packages/depthai.cpython-39-darwin.so, 2): Symbol not found: ____chkstk_darwin
Referenced from: /Users/edwardwall/Documents/Repository/depthai/venv/lib/python3.9/site-packages/palace.dylibs/libusb-1.0.0.dylib (which was built for Mac OS X 10.15)
Expected in: /usr/lib/libSystem.B.dylib
in /Users/edwardwall/Documents/Repository/depthai/venv/lib/python3.9/site-packages/palace.dylibs/libusb-1.0.0.dylib.

Is there any way to get around this?

    8 days later

    So to circle back on this, Edward was able to get this resolved actually with the help of another OAK user. I tried to help over email but was not much help relative to the other user. The issue is particular to macOS 10.13.

    The solution is:

    step1: brew install libusb

    step 2: python3 -m pip install depthai

    step 2.5: python3 install_requirements.py

    step 3: then trash the just installed palace.dylibs/libusb-1.0.0.dylib

    step 4: create a symlink in its place to the libusb-1.0.0.dylib created in the first step.

    It appears that the install script in step 2 is the real cause of this problem; that is, it is installing a 10.15 version of libusb-1.0.0.dylib. So this is why deleting what it installs, and using what brew installs from the first step is what fixes it.

    (And thanks EdW for having circled back with the solution.)

    Best,
    Brandon

      There is actually a step 2.5: python3 install_requirements.py as that installs the libusb-1.0.0.dylib you need to replace.