Qt for WebAssembly

@lorn-potter Thanks for the information. Yet <emscripten.h> cannot be found!

@Paul09A Hello, I have the same issue, Did you manage to solve this? Any workaround? Thanks

@amphi Hello, I know it is quite old, but I have the same issue. Did you solve it eventually? Thank you

@lorn-potter When using the installer qt-unified-linux-x64-4.1.0-online.run, and picking to install the WebAssembly component for Qt 5.15.2 I do not see any mention of it falling under GPL instead of LGPL. I make sure to install only LGPL components. Is this an oversight in the installer ? For all other modules (Qt Charts etc...) there is an explicit warning that the module is under GPL and not LGPL.

Building OpenSSL with the no-threads option solve the problem in my case. I don't really search deeper what is the consequences of that build option but maybe it can help someone ;)

If the resource is in a library make sure to invoke Q_INIT_RESOURCE for your resource file (see documentation for details).

Surely! I upload these files via REST API after receiving them in the sandbox.

@nagyimre You don't know what I've read, so don't assume you do. I know all about the bug you posted. I was probably the first Qt developer to experience it. The Qt WebAssembly wiki even mentions this bug, which we put there so developers would see it. https://wiki.qt.io/Qt_for_WebAssembly I just assumed you were testing with emrun.

My version is 5.15.2

I have never tried building python with emscripten. You might look at this: https://chromium.googlesource.com/external/github.com/kripken/emscripten/+/refs/tags/1.36.0/tests/python/readme.md hope this helps!

it seems that slate just can be compiled on Linux.

@lorn-potter thanks for your command. I love working with QT. If WASM would be working, a complete new world would open for us. The main thing what annoys me is that I can not find a good manual/guide to get wasm running on linux. I hope somebody can point me in the good direction. I'm probably just missing the needed information/knowledge, but I really want to learn!

Yes, it is broken. I have made a Qt bug report and will fix when I have time. https://bugreports.qt.io/browse/QTBUG-91441 Thanks!

Emscripten does not run on native arm on any OS. On Mac M1, it requires the Rosetta 2 emulation to work. "emsdk only officially supports x86_64 today." https://github.com/emscripten-core/emsdk/issues/671