@hskoglund ok thanks for the reply, I didn't get all about your previous suggestion so I was thinking of something else. Qt use OpenSsl for SSL right ? So if I compile Qt source with a compiled wasm version of OpenSsl and link it to Qt might it works ?

@lorn.potter said in Problem to run QT-Webassembly Examples: still Its work thanks, but i have new problem, after compiling i obtain this error in a browser Qt for WebAssembly: gui_opengl Application exit (abort(-1). Build with -s ASSERTIONS=1 for more info.)

Hi Patrick. I'm in the same situation. Installation on archlinux using the official qt5.13 online installer. Android and desktop kits are well configured on qtcreator just by using their respectif qmake. However when I choose the one.of webassembly (wasm_32) distributed by qt, qtcreator warns about the ABI, saying that it is not defined. Its value is unknown-unknown-unknown-..... I compiled a simple qt project using wasm_32 kit but link fails with the following error main.o: architecture machine must be wasm32. Any help?

Oops! It worked in my last attempt, although it look a long time. So, my problem was Emscripten's version after all. Here is the version that worked: emscripten-1.37.1 Note: I've used emsdk to install Emscripten and I had to install a matching LLVM/CLang version: clang-e1.37.1-64bit