Qt6Gui could not be found

[Rocky Plantchair]

Hi,
it is a fresh QtCreator installation on Kubuntu 23.10. I guess that I need to set up some environment variables, but I am not sure what and where.

 /home/.../Qt/6.6.1/gcc_64/lib/cmake/Qt6Gui/Qt6GuiConfig.cmake

but it set Qt6Gui_FOUND to FALSE so package "Qt6Gui" is considered to be
NOT FOUND.  Reason given by package:

Qt6Gui could not be found because dependency WrapOpenGL could not be found.

Configuring with --debug-find-pkg=WrapOpenGL might reveal details why the
package was not found.

Configuring with -DQT_DEBUG_FIND_PACKAGE=ON will print the values of some
of the path variables that find_package uses to try and find the package.

Stos wywołań:
/home/.../test/CMakeLists.txt:9 (find_package)
/home/.../Programy/Qt/6.6.1/gcc_64/lib/cmake/Qt6/Qt6Config.cmake:156 (find_package)
/home/.../Programy/Qt/6.6.1/gcc_64/lib/cmake/Qt6Quick/Qt6QuickConfig.cmake:40 (include)
/home/.../Programy/Qt/6.6.1/gcc_64/lib/cmake/Qt6Quick/Qt6QuickDependencies.cmake:39 (_qt_internal_find_qt_dependencies)
/home/.../Programy/Qt/6.6.1/gcc_64/lib/cmake/Qt6/QtPublicDependencyHelpers.cmake:111 (find_dependency)
/home/.../Programy/Qt/Tools/CMake/share/cmake-3.27/Modules/CMakeFindDependencyMacro.cmake:76 (find_package)

[mzimmers]

@Rocky-Plantchair are you including OpenGL in your project?

For that matter, do you have OpenGL installed?

[Rocky Plantchair]

@mzimmers No, I don't and I have openGL installed.

glxinfo | grep "OpenGL version"
OpenGL version string: 4.6 (Compatibility Profile) Mesa 23.2.1-1ubuntu3

[mzimmers]

@Rocky-Plantchair I took a closer look at the documentation (should have done this before posting) -- evidently, Qt wants you to use the Qt GUI module instead.

Does your CMakeLists.txt file have entries like these?

find_package(Qt6 REQUIRED COMPONENTS Gui)
target_link_libraries(mytarget PRIVATE Qt6::Gui)

[Rocky Plantchair]

@mzimmers yes, it has.
Your previous answer led me to the solution. As I mentioned, it is a fresh installation and there was libgl1 library missing. Now, it works. Thank you. :-)

[mzimmers]

@Rocky-Plantchair glad to hear it. You might want to mark your topic as solved.