Im trying to build simple Qt Quick project and want to work with it outside Qt Creator. It means coding, building and running program only with tools like Vim or CMake.
I have two problems:
- I don't understand why CMake cannot find all needed libraries by itself and build project.
- I don't understand why clicking on
▶button in Qt Creator builds default project succesfully, but running CMake by myself results in c++ error.
Firstly i made CMakeLists.txt in the image of Qt5 Quick project i found on github. Then I tried to make project via Creator, then inspect how it builds CMakeLists.txt and compose one by myself.
My first attempt:
cmake_minimum_required(VERSION 3.11..3.15)
set(PROJECT_NAME "uint32_sort_gui")
project(${PROJECT_NAME} LANGUAGES CXX)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
find_package(Qt5 COMPONENTS Core Gui Qml Quick QuickControls2 REQUIRED)
add_subdirectory(${PROJECT_SOURCE_DIR}/sort_lib/)
target_link_libraries(${PROJECT_NAME}
PUBLIC
Qt5::Core
Qt5::Gui
Qt5::Qml
Qt5::Quick
Qt5::QuickControls2 #(*)
SortCore
)
set_target_properties(${PROJECT_NAME}
PROPERTIES
CXX_STANDARD 11
CXX_STANDARD_REQUIRED ON)
Second (autogenerated by Qt Creator):
cmake_minimum_required(VERSION 3.1)
project(Deleteme2 LANGUAGES CXX)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
find_package(Qt5 COMPONENTS Core Quick REQUIRED)
add_executable(${PROJECT_NAME} "main.cpp" "qml.qrc")
target_compile_definitions(${PROJECT_NAME} PRIVATE $<$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>:QT_QML_DEBUG>)
target_link_libraries(${PROJECT_NAME} PRIVATE Qt5::Core Qt5::Quick)
First listing fails on (*) line, saying
Could not find a package configuration file provided by "Qt5QuickControls2"
with any of the following names:
Qt5QuickControls2Config.cmake
qt5quickcontrols2-config.cmake
Add the installation prefix of "Qt5QuickControls2" to CMAKE_PREFIX_PATH or
set "Qt5QuickControls2_DIR" to a directory containing one of the above
files. If "Qt5QuickControls2" provides a separate development package or
SDK, be sure it has been installed.
(But i've installed everything)
And second fails with error during compilation:
make
[ 16%] Automatic MOC for target Deleteme2
[ 16%] Built target Deleteme2_autogen
[ 33%] Building CXX object CMakeFiles/Deleteme2.dir/main.cpp.o
Deleteme2/main.cpp: In function ‘int main(int, char**)’:
Deleteme2/main.cpp:6:36: error: ‘AA_EnableHighDpiScaling’ is not a member of ‘Qt’
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
What am i doing wrong? Why Qt Creator can build Deleteme2 without a problem?
Edited: Here is the sample code, generated by Qt Creator for second attempt
#include <QGuiApplication>
#include <QQmlApplicationEngine>
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QGuiApplication app(argc, argv);
QQmlApplicationEngine engine;
const QUrl url(QStringLiteral("qrc:/main.qml"));
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();
}
