QT CMakeFiles error

Cervo2paille

Hey everyone,

I got many error coming from CMakeFiles. My code seems to be ok... i dont't understand.

see my code of mainwindow.cpp:

#include "mainwindow.h"

#include "ui_mainwindow.h"
#include "pageprincipale.h"

#include <QPixmap>
#include <QMessageBox>
#include <QDialog>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    QPixmap pix(":/images/blossom-logo.png");
    ui->label_pic->setPixmap(pix);
    this->setWindowTitle("Page d'inscription");
}


MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::on_pushButton_3_clicked()
{
    pagePrincipale mainpage;
    mainpage.setModal(true);
    mainpage.exec();
}

Thanks all ! :)

Christian Ehrlicher

Please post your CMakeLists.txt. Also make sure you don't include ui_mainwindow.h more than once.

Cervo2paille

@Christian-Ehrlicher
Thanks for you answer.

cmake_minimum_required(VERSION 3.5)

project(blossom VERSION 0.1 LANGUAGES CXX)

set(CMAKE_INCLUDE_CURRENT_DIR ON)

set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets)

set(PROJECT_SOURCES
        main.cpp
        resources.qrc
        mainwindow.cpp
        mainwindow.h
        mainwindow.ui
        login.ui
        pageprincipale.ui
        pageprincipale.cpp
        pageprincipale.h
)

if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
    qt_add_executable(blossom
        MANUAL_FINALIZATION
        ${PROJECT_SOURCES}
    )
# Define target properties for Android with Qt 6 as:
#    set_property(TARGET blossom APPEND PROPERTY QT_ANDROID_PACKAGE_SOURCE_DIR
#                 ${CMAKE_CURRENT_SOURCE_DIR}/android)
# For more information, see https://doc.qt.io/qt-6/qt-add-executable.html#target-creation
else()
    if(ANDROID)
        add_library(blossom SHARED
            ${PROJECT_SOURCES}
        )
# Define properties for Android with Qt 5 after find_package() calls as:
#    set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
    else()
        add_executable(blossom
            ${PROJECT_SOURCES}
        )
    endif()
endif()

target_link_libraries(blossom PRIVATE Qt${QT_VERSION_MAJOR}::Widgets)

set_target_properties(blossom 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
)

install(TARGETS blossom
    BUNDLE DESTINATION .
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})

if(QT_VERSION_MAJOR EQUAL 6)
    qt_finalize_executable(blossom)
endif()

No i don't

Christian Ehrlicher

And did you make sure you don't include the generated ui_mainwindow.h twice (I would guess it's also included in main.cpp as the linker error tells you).

Cervo2paille

It's ok ! thank you for your help !

Christian Ehrlicher

Then please mark this topic as solved, thx.