Qt for WebAssembly Tech Preview how to get?

DavidXanatos

I downloaded the tar.xz file with the archive, when i run the configuration command as described in the wiki get
ERROR: Unknown command line option '-no-thread'

So do i need to get the sources from git instead?
btw: the wiki article says something about a download section in my account but I don't see one just profile and that's it.

I downloaded the 3 repos linkd in the viki and took the rest of the ources from the tar.xz file, but when i run configure i get
ERROR: Unknown command line option '-xplatform'.

matze42

David,

you have to clone the git-repositories like stated in the wiki.

Martin

DavidXanatos

Only the 3 or all of them and if all of them where can i find an exhaustive list?

matze42

Only the 3.

In the directory of your choice:

git clone -b wip/webassembly https://code.qt.io/qt/qtbase.git
git clone -b wip/webassembly https://code.qt.io/qt/qtdeclarative.git 
git clone -b wip/webassembly https://code.qt.io/qt/qtwebsockets.git

Then in ./qtbase:

./configure -xplatform emscripten -developer-build -release -static -no-thread -nomake tests -nomake examples  -no-dbus -no-headersclean -system-libpng -no-ssl -no-warnings-are-errors

make -j4 (or whatever number of CPUs you want to incorporate).

Before install "emscripten" as described here:
https://kripken.github.io/emscripten-site/docs/getting_started/downloads.html

Be sure you have the emscripten tools in your PATH before building Qt.

lorn.potter

You can either grab the source with git according to the Qt WebAssembly wiki, or download the package here:

https://download.qt.io/development_releases/qt/qtwebassembly-for-5.11-tp/

Antonio Ortiz

@matze42 I did exactlywhat you say, but when I run ./configure it doesn't access or use the qtdeclarative and qtwebsockets directories for the build.
And using @lorn-potter method I get "Checking for target architecture... Project ERROR: target architecture detection binary not found."
I'm using Xubuntu 18.04 64 bits version

lorn.potter

You probably have emscripten version greater than 1.38.
If you have 1.38 and want to compile the tech preview package, you need this patch:
https://codereview.qt-project.org/#/c/230230/2//ALL,unified

If you are using git repos, you will need to run qmake for qtdeclarative and qtwebsockets manually

Antonio Ortiz

Thanks @lorn-potter. It works as a charm

Mohammad Kanan

@lorn.potter I have emscripten 1.38.12 , I want to compile the latest base 5.12, I cloned the three modules mentioned .. I can run ./qtbase/configure ... my problem is "How to run qmake separately for the other modules .. I am almost ignorant in this! by guess, compile them as normal project by running ~/qtbase/qmake/qmake qtdeclarative.pro , am I write?

lorn.potter

@Mohammad-Kanan
For other modules just make sure that the qmake from that build is in your path (as well as the emscripten compiler), and then run qmake as normal.

WebAssembly support is now in the 5.12 branch of QtDeclarative (as of today), so if you use QtBase 5.12 branch, then use that as well.
There are changes in the 5.12 like filedialog is not currently enabled, but we will open them back up soon.
Other modules like QtCharts, QtQuickcontrols can be used with just the 5.12 branch.

Mohammad Kanan

@lorn.potter , Thanks so much for your fast response. regarding: "WebAssembly support is now in the 5.12 branch of QtDeclarative (as of today), so if you use QtBase 5.12 branch, then use that as well."
, I am currently downloading the three modules as mentioned in the Qt for WebAssembly wiki (i.e I don't use anything from WebAssembly 5.11-tp), I assume all downloads in the wiki are QtBase 5.12 and no further download or git updates needed?