Python macOS issue (ImportError: dlopen(...): no suitable image found. Did find: ...: mach-o, but wrong architecture)

[thinking-tower]

Issue description

After installing kp, import kp throws an error.

Code example

# use pip
pip install kp 
# or compile from source
git clone https://github.com/EthicalML/vulkan-kompute.git
git submodule update --init --recursive
python setup.py build
python setup.py install

>>> import kp
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: dlopen(.../lib/python3.9/site-packages/kp-0.7.0-py3.9-macosx-11-arm64.egg/kp.cpython-39-darwin.so, 2): no suitable image found.  Did find:
        .../lib/python3.9/site-packages/kp-0.7.0-py3.9-macosx-11-arm64.egg/kp.cpython-39-darwin.so: mach-o, but wrong architecture
        .../python3.9/site-packages/kp-0.7.0-py3.9-macosx-11-arm64.egg/kp.cpython-39-darwin.so: mach-o, but wrong architecture

System Info

• OS: macOS Big Sur 11.2.3
• Architecture: arm64
• CMake version: 3.19.6
• Python version: 3.9

[thinking-tower]

This can be caused by

• linking to an Intel-based Python library
  • Python3.9 ARM and Python3.8 Intel installed in the same machine
• compiling in an Intel-based terminal like Visual Studio Code with Rosetta emulation
  • uname -m in emulated Visual Studio Code returns x86_64 for example.

Here's a couple of solutions:

• Make sure to link to the correct Python library
• Launch terminal yourself and compile there
• If you want to compile with an Intel program (Visual Studio Code with Rosetta), pass -DCMAKE_OSX_ARCHITECTURES=arm64 when installing
• pip install kp with Intel Python instead

See discussions in CMake and Homebrew for more information.

[axsaucedo]

Closing as fix was merged