dockerfile to compile qt6.5 for webassembly on ubuntu 18.04
-
I am trying to compile qt6.5 for web assembly on ubuntu 18.04. I am unable to do it after various methods using dockerfile or otherwise.
Is there a dockerfile for installing qt6 for wasm or can someone point me to a set of instructions that works?
I tried the following:
qt6-dockerfile: gave make errors
qt5-wasm: This worked for qt5, but not for qt6 -
Hi and welcome to devnet,
Which error did you get exactly ?
By the way, 18.04 is not a supported platform for such a version of Qt. -
@shome Qt6 needs C++ 17 and the minimum version of g++ version for C++17 is 8.
ubuntu 18.04 has g++ 7.5.0. Therefore, you can not build Qt6 on ubuntu 18.04.
Ubuntu 20.04 or above is required. Even Ubuntu 20.04 is old. I would prefer Ubuntu 22.04. -
@SGaist I changed my OS to 20.04. I used the following link to compile: lBuilding_Qt_6_from_Git
I got branch 6.5
The error I got was
FAILED: qtbase/lib/libQt6Core.so.6.5.4
: && /usr/bin/c++ -fPIC -DNDEBUG -O3 -Wl,-Bsymbolic-functions -Wl,--no-undefined -Wl,-e,qt_core_boilerplate -Wl,--dynamic-list=/home/neo/Desktop/shome/softwares/qt6/qtbase/src/corelib/QtCore.dynlist -Wl,--version-script,/home/neo/Desktop/shome/softwares/qt6/qt6-build/qtbase/src/corelib/Core.version -Wl,--enable-new-dtags -shared -Wl,-soname,libQt6Core.so.6 -o qtbase/lib/libQt6Core.so.6.5.4 qtbase/src/corelib/CMakeFiles/Core.dir/Core_autogen/mocs_compilation.cpp.o qtbase/src/corelib/CMakeFiles/Core.dir/global/qsimd.cpp.o qtbase/src/corelib/CMakeFiles/Core.dir/tools/qhash.cpp.o qtbase/src/corelib/CMakeFiles/Core.dir/compat/removed_api.cpp.o qtbase/src/corelib/CMakeFiles/Core.dir/global/archdetect.cpp.o qtbase/src/corelib/CMakeFiles/Core.dir/global/qassert.cpp.o qtbase/src/corelib/CMakeFiles/Core.dir/global/qendian.cpp.o qtbase/src/corelib/CMakeFiles/Core.dir/global/qexceptionhandling.cpp.o qtbase/src/corelib/CMakeFiles/Core.dir/global/qfloat16.cpp.o 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@shome things are not clear:
- why do you have conda in the mix ?
- why are you building for desktop since you mentioned wasm ?
- why not make use of the pre-built Qt for wasm on a supported distribution since you want to use Docker ?
-
@SGaist : as per my limited understanding I need to install qt for desktop before I can compile qmake with wasm support. Is it possible to avoid the installation for desktop?
I need qt6.4 and above with wasm support. How can I get pre-built Qt for wasm for ubuntu 20.04
I need to check how conda got invoked even though I was not in any virtual environment
-
-
@SGaist I could build and install Qt6.6.2 using steps at https://wiki.qt.io/Building_Qt_6_from_Git. Next I used the instructions at https://doc.qt.io/qt-6/wasm.html. I could compile qt for wasm by the above method.
would the qt for wasm installation work if i had used prebuilt packages as follows:
sudo apt install qt6-base-dev qt6-base-private-dev qt6-declarative-dev qt6-declarative-private-dev qt6-tools-dev qt6-tools-private-dev qt6-scxml-dev qt6-documentation-tools libqt6core5compat6-dev qt6-tools-dev-tools qt6-l10n-tools qt6-shader-baker libqt6shadertools6-dev qt6-quick3d-dev qt6-quick3d-dev-tools libqt6svg6-dev libqt6quicktimeline6-dev libqt6serialport6-dev
