Can anybody generate opencv.js?

Question

I can't generate OpenCV.js using this instructions: https://docs.opencv.org/master/d4/da1/tutorial_js_setup.html

I have this error:

CMake Error: CMake was unable to find a build program corresponding to "Unix Makefiles". CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool.

When I'm trying to execute:

python ./platforms/js/build_js.py build_js

Alright, guys! You can download opencv.js from sources (press F12) of this Page: https://docs.opencv.org/master/js_face_detection_camera.html

Answer 1

Looks like Emscripten doesn't setup the enviroment variable correctly to the SDK

For anyone trying to get this to build you need to specify the correct path to the Emscripten

which is the path where Emscripten is installed found in emsdk/upstream/emscripten

python ./platforms/js/build_js.py build_js --emscripten_dir=/home/username/Desktop/emsdk/upstream/emscripten

This should then work

Answer 2

You can find a nightly build at https://docs.opencv.org/master/opencv.js and some useful stuff at https://docs.opencv.org/master/utils.js .

<script async src="https://docs.opencv.org/master/opencv.js" type="text/javascript"></script>