Qt6 dev on Ubuntu 20.04 command line

[xavierbaez]

Hello. Is it possible to install development packages for Qt6 on Ubuntu 20.04. I cannot use GUI installer because the build has to be done on Jenkins.

I would love to have Deb files
I am also using

• list itemQt5CoreCompat
• list itemqtgraphicaleffects5

[SGaist]

Hi,

You might want to check the aqtinstall project. It should fit your use case.

[xavierbaez]

@SGaist thanks for your help the problem is I don't find that module:

First I found the architecture.

aqt list-qt linux desktop --arch 6.5.0

Then I showed the list of modules:

aqt list-qt linux desktop --long-modules 6.5.0 wasm_multithread

qt5compat           Qt 5 Compatibility Module
qtcharts            Qt Charts
qtdatavis3d         Qt Data Visualization
qtgrpc              Qt Protobuf and Qt GRPC
qthttpserver        Qt HTTP Server
qtimageformats      Qt ImageFormats
qtlottie            Qt Lottie Animation
qtmultimedia        Qt Multimedia
qtquick3d           Qt Quick 3D
qtquick3dphysics    Quick: 3D Physics
qtquicktimeline     Qt Quick Timeline
qtscxml             Qt State Machines
qtshadertools       Qt Shader Tools
qtspeech            Qt Speech
qtvirtualkeyboard   Qt Virtual Keyboard
qtwebchannel        Qt WebChannel
qtwebsockets        Qt WebSockets

[xavierbaez]

@SGaist Okay I did SOME progress.

This is how it's supposed to install:

aqt install-qt linux desktop 6.5.0 -m qtscxml

however, the application won't run

aqt install-qt linux desktop 6.5.0 -m qtscxml
INFO    : aqtinstall(aqt) v3.1.5 on Python 3.8.10 [CPython GCC 9.4.0]
INFO    : Downloading qtsvg...
INFO    : Downloading qtdeclarative...
INFO    : Downloading qtscxml...
INFO    : Downloading qtbase...
INFO    : Redirected: qt.mirror.constant.com
INFO    : Redirected: qt.mirror.constant.com
INFO    : Redirected: qt.mirror.constant.com
INFO    : Redirected: qt.mirror.constant.com
INFO    : Finished installation of qtsvg-Linux-RHEL_8_4-GCC-Linux-RHEL_8_4-X86_64.7z in 2.28309651
INFO    : Finished installation of qtscxml-Linux-RHEL_8_4-GCC-Linux-RHEL_8_4-X86_64.7z in 2.41947950
INFO    : Downloading qttools...
INFO    : Downloading qttranslations...
INFO    : Redirected: qt.mirror.constant.com
INFO    : Redirected: qt.mirror.constant.com
INFO    : Finished installation of qttranslations-Linux-RHEL_8_4-GCC-Linux-RHEL_8_4-X86_64.7z in 2.75272194
INFO    : Downloading qtwayland...
INFO    : Redirected: qt.mirror.constant.com
INFO    : Finished installation of qtbase-Linux-RHEL_8_4-GCC-Linux-RHEL_8_4-X86_64.7z in 7.15153952
INFO    : Downloading icu...
INFO    : Finished installation of qtwayland-Linux-RHEL_8_4-GCC-Linux-RHEL_8_4-X86_64.7z in 2.77396194
INFO    : Redirected: qt.mirror.constant.com
INFO    : Finished installation of icu-linux-Rhel7.2-x64.7z in 3.15005919
INFO    : Finished installation of qttools-Linux-RHEL_8_4-GCC-Linux-RHEL_8_4-X86_64.7z in 9.06875782
INFO    : Finished installation of qtdeclarative-Linux-RHEL_8_4-GCC-Linux-RHEL_8_4-X86_64.7z in 13.88366899
INFO    : Patching /build.dir/6.5.0/gcc_64/bin/qmake
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6StateMachine.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6OpenGLWidgets.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Gui.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QuickControls2.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QmlIntegration.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QmlXmlListModel.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Widgets.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Core.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6LabsSharedImage.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6DBus.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QmlCore.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QmlLocalStorage.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Scxml.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Sql.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QuickDialogs2Utils.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6LabsWavefrontMesh.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6LabsFolderListModel.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QmlModels.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Concurrent.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Platform.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6ScxmlQml.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Designer.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Qml.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Svg.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QuickDialogs2QuickImpl.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6SvgWidgets.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6PrintSupport.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QuickDialogs2.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QuickWidgets.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6WaylandClient.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QuickTemplates2.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6UiPlugin.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QuickTest.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6StateMachineQml.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Test.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6OpenGL.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6LabsQmlModels.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QuickLayouts.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6LabsAnimation.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6LabsSettings.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Quick.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Help.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6UiTools.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Network.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QmlWorkerScript.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6QuickControls2Impl.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Linguist.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Core5Compat.pc
INFO    : Patching /build.dir/6.5.0/gcc_64/lib/pkgconfig/Qt6Xml.pc
INFO    : Finished installation
INFO    : Time elapsed: 15.81068512 second

[SGaist]

Which application won't run ?
In which context ?

[xavierbaez]

It's an app I programmed that runs on other distros but I need to do this on Jenkins on Ubuntu 20.04
I installed Qt6 using this command:

aqt list-qt linux desktop --arch 6.5.0

The error that I get when compiling the application is:

 Could not find a package configuration file provided by "Qt6" with any of
  the following names:

    Qt6Config.cmake
    qt6-config.cmake

The error that I get when trying to run the application (that I compiled previously) is:

error while loading shared libraries: libQt6StateMachine.so.6

[xavierbaez]

@SGaist I even tried installing all modules:

aqt install-qt linux desktop 6.5.0 -m all gcc_64

It seems these packages are only installed localy inside that folder.
I would appreciate anybody that has done this

[SGaist]

For the compilation issue, did you point cmake to the Qt lib folder ? Using CMAKE_PREFIX_PATH if memory serves well.

As for running your "pre-built" application, use LD_LIBRARY_PATH to point the library loader to the custom path.

[xavierbaez]

@SGaist thanks for your help I'm getting close I read CMAKE_PREFIX_PATH and tried every single possible thing
DCMAKE_PREFIX_PATH
export CMAKE_PREFIX_PATH
I've tried the main folder, the subfolder
This is the file here:

find ./ -iname 'Qt6Config.cmake'

This is where the file is located:
./6.5.0/gcc_64/lib/cmake/Qt6/Qt6Config.cmake

[SGaist]

mkdir build
cd build
cmake -DCMAKE_PREFIX_PATH=<full_path>/6.5.0/gcc_64/lib/cmake <full_path_to_your_project>

However ! There is an even simpler solution I forgot about: unless aqinstall does something different, you should have a wrapper named qt-cmake in the bin folder of your Qt installation, use that one as it has everything set already.

[Paul Colby]

@SGaist said in Qt6 dev on Ubuntu 20.04 command line:

cmake -DCMAKE_PREFIX_PATH=<full_path>/6.5.0/gcc_64/lib/cmake/Qt6/Qt6Config.cmake <full_path_to_your_project>

I think CMAKE_PREFIX_PATH is meant to be a directory, not a file. One of my scripts regularly uses the equivalent of:

cmake -D "CMAKE_PREFIX_PATH=<full_path>/6.5.0/gcc_64/" ...

you should have a wrapper named qt-cmake in the bin folder of your Qt installation

Nice! I didn't know about that. Just looked at its there from my Qt Online Installer versions (and I assume aqinstall). I'll have a play and probably start using it from now on :D

For interest, internally it does the equivalent of:

cmake -DCMAKE_TOOLCHAIN_FILE="<full_path>/6.5.0/gcc_64/lib/cmake/Qt6/qt.toolchain.cmake"  "$@"

Thanks @SGaist :D

[SGaist]

@Paul-Colby Good catch ! Copy-Paste without cleanup error and thanks for the additional tip :-)