CMake Error at samples/android/15-puzzle/CMakeLists.txt:3 (add_android_project):
Unknown CMake command "add_android_project".
-- Configuring incomplete, errors occurred!
See also "/data/data/com.termux/files/home/node_modules/opencv-build/opencv/build/CMakeFiles/CMakeOutput.log".
See also "/data/data/com.termux/files/home/node_modules/opencv-build/opencv/build/CMakeFiles/CMakeError.log".
ERR! child process exited with code 1 (for more info, set '--loglevel silly')
CMake Error at samples/android/15-puzzle/CMakeLists.txt:3 (add_android_project): Unknown CMake command "add_android_project".
-- Configuring incomplete, errors occurred! See also "/data/data/com.termux/files/home/node_modules/opencv-build/opencv/build/CMakeFiles/CMakeOutput.log". See also "/data/data/com.termux/files/home/node_modules/opencv-build/opencv/build/CMakeFiles/CMakeError.log". ERR! child process exited with code 1 (for more info, set '--loglevel silly')
I got an error when building, what should I do?