Recently, I was tossing the board of Rockchip RK3588. After installing the ubuntu system, I was going to install pyqt. After cross-compiling according to the online tutorial, I could import it in the terminal, but there was a problem in this step:
from PyQt5.QtWidgets import *The error message is as follows:
ImportError: /lib/aarch64-linux-gnu/libwayland-server.so.0: undefined symbol: ffi_type_uint32, version LIBFFI_BASE_7.0Undefined symbols appear, which may be a problem with the environment variables of the dynamic library. Get the solution after consulting the information:
export LD_PRELOAD=/usr/lib/aarch64-linux-gnu/libffi.so.7
The reason is that libffi.so.7 has not been added to the environment variable, and Pyqt5 can run normally after using the above command.