WebAssembly for Qt Creator

[tansgumus]

Hi,

I installed emscripten as mentioned in Qt for Assembly guide for building my Hello World QtQuick app but Qt Creator unable to recognize it (see below)

How can I fix this problem?

• Linux Mint 19.3 - x64
• Qt 5.15 (binaries from Qt Installer)
• Qt Creator 4.12.2
• Emscripten (terminal output)

$ em++ --version
emcc (Emscripten gcc/clang-like replacement) 1.39.8 (commit 6b0d151917fe508007d9d76791369ec94c4eb304)
Copyright (C) 2014 the Emscripten authors (see AUTHORS.txt)
This is free and open source software under the MIT license.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ echo $PATH
/home/tansu/.emsdk:/home/tansu/.emsdk/fastcomp/emscripten:/home/tansu/.emsdk/node/12.9.1_64bit/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

$ emcc -v
emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 1.39.8
clang version 6.0.1 (/b/s/w/ir/cache/git/chromium.googlesource.com-external-github.com-emscripten--core-emscripten--fastcomp--clang 98df4be387dde3e3918fa5bbb5fc43e1a0e1daac) (/b/s/w/ir/cache/git/chromium.googlesource.com-external-github.com-emscripten--core-emscripten--fastcomp b4837f88af2d240abb550c0bbd47f3b8ffe5985a) (emscripten 1.38.31 : 1.38.31)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/tansu/.emsdk/fastcomp/fastcomp/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Candidate multilib: .;@m64
Selected multilib: .;@m64
shared:INFO: (Emscripten: Running sanity checks)

[lorn.potter]

@tansgumus For Qt 5.15, you need emscripten 1.39.8, you have 1.38.8

[tansgumus]

@lorn-potter said in WebAssembly for Qt Creator:

@tansgumus For Qt 5.15, you need emscripten 1.39.8, you have 1.38.8

Sorry I sent the wrong log, the right one updated

[Falko]

Hi,

I had the same problem this weekend with Qt 5.15 under Windows 10.

Try this:

git clone https://github.com/emscripten-core/emsdk.git --branch 1.39.7 --single-branch

./emsdk install sdk-1.39.7-64bit

./emsdk activate sdk-1.39.7-64bit

I started with 1.39.8, but Qt Creator was always complaining that I don't use 1.39.7.

Additionally since emscripten 1.39.17 the traditional ~/.emscripten config file in the $HOME directory will not be written:

1.39.17: 06/05/2020
-------------------
- On first use, emscripten creates a sample config file.  This config file
  is now created in the emscripten directory by default.  The traditional
  `~/.emscripten` config file in the `$HOME` directory is still supported and
  the sample config will still be written there in the case that the emscripten
  root is read-only.

But as far as I know Qt Creator needs this file.

Best regards,
Falko

[tansgumus]

@Falko said in WebAssembly for Qt Creator:

I started with 1.39.8, but Qt Creator was always complaining that I don't use 1.39.7.

I updated Qt Creator to the recent version (Qt Creator 4.12.2) but still complains even when I tried to use Emscripten1.39.7!!!

[TMJJ001]

@tansgumus I'm having the same issue.
Where you able to solve it?

Thanks

[tansgumus]

@TMJJ001 said in WebAssembly for Qt Creator:

Where you able to solve it?

I couldn't fix this issue, so I ended up by leaving Qt (the maintainers only care about commercial Qt which is Qt for embedded system).
I'm using Flutter, and I'm happy with it (done a bunch of iOS, Android & Web apps)

[lorn.potter]

You can always build Qt WebAssembly apps from the commandline, and still use Qt Creator to edit.

[TMJJ001]

@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!