Problem with Build in QML

[Blackzero]

I was previously a Qt Widget user and just tried using QML Quick for the first time but immediately encountered this problem, how do I solve it?

[Blackzero]

Problem solved.
I think this is a bug in Qt 6.8.2, after I use Qt 6.9.1 there is no this error.

[ankou29666]

CMake project configuration failed ?
could you please show us your CMakeLists.txt file ?

[Blackzero]

@ankou29666 of course

cmake_minimum_required(VERSION 3.16)

project(untitled VERSION 0.1 LANGUAGES CXX)

set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(Qt6 REQUIRED COMPONENTS Quick)

qt_standard_project_setup(REQUIRES 6.8)

qt_add_executable(appuntitled
    main.cpp
)

qt_add_qml_module(appuntitled
    URI untitled
    VERSION 1.0
    QML_FILES
        Main.qml
)

# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
# If you are developing for iOS or macOS you should consider setting an
# explicit, fixed bundle identifier manually though.
set_target_properties(appuntitled PROPERTIES
#    MACOSX_BUNDLE_GUI_IDENTIFIER com.example.appuntitled
    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
    MACOSX_BUNDLE TRUE
    WIN32_EXECUTABLE TRUE
)

target_link_libraries(appuntitled
    PRIVATE Qt6::Quick
)

include(GNUInstallDirs)
install(TARGETS appuntitled
    BUNDLE DESTINATION .
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)

[ankou29666]

I don't remember what is the error message displayed in that case but all I notice is that you define a target name but next define properties for another target name.

either you rename your project to appuntitled, or you rename it untitled everywhere else. But mixing "untitled" in project definition with "appuntitled" everywhere else won't work for sure.

Best practice is to use ${PROJECT_NAME} variable :

project (somename blablabla)
qt_add_executable (${PROJECT_NAME} yourfiles)
qt_add_qml_module (${PROJECT_NAME}
    URI your.project.uri
    RESOURCE_PREFIX someprefix
    VERSION 1.0
    QML_FILES
       YourQmlFiles.qml
)

it's more reliable template than QtCreator's defaults.

[Blackzero]

@ankou29666 said in Problem with Build in QML:

I don't remember what is the error message displayed in that case but all I notice is that you define a target name but next define properties for another target name.

I didn't know that, cmake is automatically generated by Qt Creator. I will try it.

[Blackzero]

@ankou29666
here are the error details

[Blackzero]

Problem solved.
I think this is a bug in Qt 6.8.2, after I use Qt 6.9.1 there is no this error.

[ankou29666]

made a try with 6.8.3 on mac, the default template makes project untitled and everywhere else is appuntitled. builds fine, fine. (just complaining that virtual keyboard is not installed, I don't really understand why but doesn't matter). So yeah looks like the name given in project doesn't have to match the name given in qt_add_executable.