Details
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Bug
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Resolution: Fixed
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P2: Important
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6.3, 6.4.0, 6.4.1, 6.5
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None
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Windows 11
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Windows
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266c2d23a (dev), 854ee1c03 (dev), a2098df70 (6.6), d0513abe1 (6.6), 87ad91cd7 (6.5), 8f62d5e72 (6.5)
Description
Good afternoon.
I'm using the new Qt API for CMake to deploy a QtQuick/Qml based application.
I tested this behavior on Windows 11 Pro on different versions of the Qt library (branches 6.3 / 6.4 / dev).
I am creating a new Qt Quick Application in Qt Creator. In the CMakeLists.txt file, I add calls for deployment. Here are the files that make up the project.
CMakeLists.txt:
cmake_minimum_required(VERSION 3.16)
project(QmlAppDeployTest VERSION 0.1 LANGUAGES CXX)
set(CMAKE_AUTOMOC ON)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_BUILD_TYPE Release)
find_package(Qt6 6.2 COMPONENTS Core Qml Quick REQUIRED)
qt_standard_project_setup()
qt_add_executable(QmlAppDeployTest
main.cpp
)
qt_add_qml_module(QmlAppDeployTest
URI QmlAppDeployTest
VERSION 1.0
QML_FILES main.qml
)
set_target_properties(QmlAppDeployTest PROPERTIES
MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
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(QmlAppDeployTest
PRIVATE Qt6::Qml Qt6::Quick)
install(TARGETS QmlAppDeployTest
BUNDLE DESTINATION .
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)
qt_generate_deploy_qml_app_script(
TARGET QmlAppDeployTest
FILENAME_VARIABLE deploy_script
)
install(SCRIPT ${deploy_script})
main.cpp:
#include <QGuiApplication> #include <QQmlApplicationEngine> int main(int argc, char *argv[]) { QGuiApplication app(argc, argv); QQmlApplicationEngine engine; const QUrl url(u"qrc:/QmlAppDeployTest/main.qml"_qs); QObject::connect(&engine, &QQmlApplicationEngine::objectCreated, &app, [url](QObject *obj, const QUrl &objUrl) { if (!obj && url == objUrl) QCoreApplication::exit(-1); }, Qt::QueuedConnection); engine.load(url); return app.exec(); }
main.qml:
import QtQuick import QtQuick.Controls Window { id: window width: 640 height: 480 visible: true title: qsTr("Hello World") Column { anchors.centerIn: parent width: window.width / 3 height: window.height / 3 Button { text: "Request" width: 150 height: 30 } } }
Next, I configure, build, and install with the following commands:
"C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Auxiliary\Build\vcvarsall.bat" amd64 cmake -G "Visual Studio 16 2019" -A x64 -D CMAKE_PREFIX_PATH="c:/Qt6.4.0/6.4.0/msvc2019_64" ../QmlAppDeployTest cmake --build . --config Release cmake --install . --config Release --prefix c:/qml_app_deploy_test
Next, I explore the c:/qml_app_deploy_test directory and see which libraries have been copied there.
First, let's look at the c:/qml_app_deploy_test/bin directory
Here is a list list of his files:
d3dcompiler_47.dll opengl32sw.dll QmlAppDeployTest.exe qt.conf Qt6Core.dll Qt6Gui.dll Qt6Network.dll Qt6OpenGL.dll Qt6Qml.dll Qt6QmlModels.dll Qt6QmlModelsd.dll Qt6QmlWorkerScript.dll Qt6QmlWorkerScriptd.dll Qt6Quick.dll Qt6QuickControls2.dll Qt6QuickControls2d.dll Qt6QuickControls2Impl.dll Qt6QuickControls2Impld.dll Qt6QuickLayouts.dll Qt6QuickLayoutsd.dll Qt6QuickShapes.dll Qt6QuickShapesd.dll Qt6QuickTemplates2.dll Qt6QuickTemplates2d.dll Qt6Svg.dll vc_redist.x64.exe
We can see that in addition to release versions, debug versions have also been copied for some libraries.
We also examine the contents of the c:/qml_app_deploy_test/qml/QtQml directory:
Models/modelsplugin.dll Models/modelsplugind.dll Models/qmldir WorkerScript/workerscriptplugin.dll WorkerScript/workerscriptplugind.dll WorkerScript/qmldir qmldir qmlplugin.dll qmlplugind.dll
Not only release versions are also copied here, but also debug versions.
The same situation is also observed in other subdirectories, for example in c:/qml_app_deploy_test/qml/QtQuick.
I found the cause of this problem. She is here:
C:/Qt6.4.0/6.4.0/msvc2019_64/lib/cmake/Qt6Qml/Qt6QmlDeploySupport.cmake.
I also provide links to this code in the Qt repositories:
https://code.qt.io/cgit/qt/qtdeclarative.git/tree/src/qml/Qt6QmlDeploySupport.cmake#n185
https://github.com/qt/qtdeclarative/blob/dev/src/qml/Qt6QmlDeploySupport.cmake#L185
Here is the code (this is a fragment of the _qt_internal_deploy_qml_imports_for_target definition function):
list(FILTER files INCLUDE REGEX "^(.*/)?(lib)?${entry_PLUGIN}.*\\.(so|dylib|dll)(\\.[0-9]+)*$")
This uses a regular expression to search for library files that match the plugin name.
This uses a regular expression to search for library files that match the plugin name. Let's take a look at this snippet:
${entry_PLUGIN}.*\\.
If the plugin name is qtquick2plugin, then this fragment will match the lines:
qtquick2plugin. qtquick2plugind.
What is happening. This code finds the library files for each passed plugin, both release and debug versions. And as a result, when installing the project (cmake --install ...), all these found files will be copied. And as a result of this copying of debug versions of plugins, their debug dependency libraries will also be copied to the c:/qml_app_deploy_test/bin directory.
I experimented and changed the C:/Qt6.4.0/6.4.0/msvc2019_64/lib/cmake/Qt6Qml/Qt6QmlDeploySupport.cmake file in the installed Qt library so that the specified line was:
list(FILTER files INCLUDE REGEX "^(.*/)?(lib)?${entry_PLUGIN}\\.(so|dylib|dll)(\\.[0-9]+)*$")
And after that, I called the installation of the project again (after deleting the directory from the previous installation):
cmake --install . --config Release --prefix c:/qml_app_deploy_test
and now ONLY release version libraries have been copied.
With this, my application starts correctly.
Perhaps you could use this fix. But maybe I don't know about some cases when it won't work.
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