[英]Qt5 and Cmake linking QApplication header error
I am trying to link cmake with one of my Qt projects that uses QApplication.我正在尝试将 cmake 与我使用 QApplication 的 Qt 项目之一链接。 I am getting this error when I build the project
我在构建项目时收到此错误
Cannot open include file: 'QApplication': No such file or directory
I am only using QApplication and QWebEngineWidget in my.cpp file and QDir in the header file我只在 my.cpp 文件中使用 QApplication 和 QWebEngineWidget,在 header 文件中使用 QDir
main.h主文件
#ifndef MAIN_H
#define MAIN_H
#include <QDir>
QUrl getlink(){
QUrl url = QUrl::fromLocalFile(QDir::currentPath();
return url;
}
#endif // MAIN_H
main.cpp主文件
#include <QApplication>
#include <QWebEngineView>
#include "main.h"
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QApplication app(argc, argv);
QWebEngineView view;
view.setUrl(getlink());
view.resize(1524, 850);
view.show();
return app.exec();
}
and here is the code from my CMake file for this application这是我的 CMake 文件中用于此应用程序的代码
if (ENABLE_QT_SimApp_GUI)
find_package(qtlibs)
find_package(SimApp)
if (NOT SimApp_FOUND)
message(FATAL_ERROR "Could not find SimApp")
endif(NOT SimApp_FOUND)
set(CMAKE_PREFIX_PATH ${PREFIX_PATH})
message(STATUS "CMAKE_PREFIX_PATH" ${CMAKE_PREFIX_PATH})
find_package(Qt5 REQUIRED COMPONENTS Widgets Core Gui Sql PrintSupport WebEngineWidgets)
qt5_wrap_cpp(QtSimAppProjectLib_hdr_moc ${QtSimAppProjectLib_hdr})
qt5_wrap_ui(QtSimAppProjectLib_ui_uic ${QtSimAppProjectLib_ui})
qt5_add_resources(QtSimAppProjectLib_qrc_rcc ${QtSimAppProjectLib_qrc})
include_directories (${PROJECT_SOURCE_DIR})
include_directories (${PROJECT_BINARY_DIR})
add_library (QtSimAppProjectLib STATIC ${QtSimAppProjectLib_src} ${QtSASQProjectLib_hdr_moc} ${QtSASQProjectLib_ui_uic})
target_link_libraries (QtSimAppProjectLib
Qt5::Core
Qt5::Gui
Qt5::Widgets
Qt5::Sql
Qt5::PrintSupport
Qt5::WebEngineWidgets)
#WIN32 to suppress the console window under Windows
add_executable(SIM_APP WIN32 ${QtSimAppProjectLib_src} ${QtSimAppProjectLib_qrc_rcc})
if (ENABLE_COPY_QT_LIBS AND WIN32)
find_package(qtdlls)
endif(ENABLE_COPY_QT_LIBS AND WIN32)
endif (ENABLE_QT_SimApp_GUI)
I am aware that I may not need the other linked libs but I kept them there for future development.我知道我可能不需要其他链接的库,但我将它们保留在那里以供将来开发。
Anyway, when I added Qt5::WebEngineWidget for QWebEngineView in the target link it worked fine, but when I added Qt5::Widgets for QApplication it does not seem to be able to find the file and i dont know why.无论如何,当我在目标链接中为 QWebEngineView 添加 Qt5::WebEngineWidget 时它工作正常,但是当我为 QApplication 添加 Qt5::Widgets 时,它似乎无法找到该文件,我不知道为什么。
Any idea on what could be the issue?关于可能是什么问题的任何想法?
As mentioned in the comments by @vre , you never actually link your GUI app to Qt5
. 如@vre的评论中所述,您实际上从未将GUI应用程序链接到
Qt5
。 Below is a fixed version of your posted CMakeLists.txt
以下是您发布的
CMakeLists.txt
的固定版本
if (ENABLE_QT_SimApp_GUI)
find_package(qtlibs)
find_package(SimApp)
if (NOT SimApp_FOUND)
message(FATAL_ERROR "Could not find SimApp")
endif(NOT SimApp_FOUND)
set(CMAKE_PREFIX_PATH ${PREFIX_PATH})
message(STATUS "CMAKE_PREFIX_PATH" ${CMAKE_PREFIX_PATH})
find_package(Qt5 REQUIRED COMPONENTS Widgets Core Gui Sql PrintSupport WebEngineWidgets)
qt5_wrap_cpp(QtSimAppProjectLib_hdr_moc ${QtSimAppProjectLib_hdr})
qt5_wrap_ui(QtSimAppProjectLib_ui_uic ${QtSimAppProjectLib_ui})
qt5_add_resources(QtSimAppProjectLib_qrc_rcc ${QtSimAppProjectLib_qrc})
include_directories (${PROJECT_SOURCE_DIR})
include_directories (${PROJECT_BINARY_DIR})
add_library (QtSimAppProjectLib STATIC ${QtSimAppProjectLib_src} ${QtSASQProjectLib_hdr_moc} ${QtSASQProjectLib_ui_uic})
target_link_libraries (QtSimAppProjectLib
Qt5::Core
Qt5::Gui
Qt5::Widgets
Qt5::Sql
Qt5::PrintSupport
Qt5::WebEngineWidgets)
#WIN32 to suppress the console window under Windows
add_executable(SIM_APP WIN32 ${QtSimAppProjectLib_src} ${QtSimAppProjectLib_qrc_rcc})
# use one of the following target_link_libraries() calls
target_link_libraries(SIM_APP Qt5::Core Qt5::Gui Qt5::Widgets)
# target_link_libraries(SIM_APP QtSimAppProjectLib)
if (ENABLE_COPY_QT_LIBS AND WIN32)
find_package(qtdlls)
endif(ENABLE_COPY_QT_LIBS AND WIN32)
endif (ENABLE_QT_SimApp_GUI)
It's not answer, but yet another question, While compiling a cmake generated ninja build for Qt.这不是答案,而是另一个问题,在编译 cmake 时,为 Qt 生成了忍者构建。 we get such an error - #include "../../../../../../.:/e./github/Qt/qtbase/src/corelib/animation/qparallelanimationgroup,h".
我们收到这样的错误 - #include "../../../../../../.:/e./github/Qt/qtbase/src/corelib/animation/qparallelanimationgroup,h"。 or something like this, Of course.
或类似的东西,当然。 the file won't be found, Where, I gess?
找不到文件,我猜在哪里? is the fault - in cmake or in a cmake script for Qt building, It happens from version into version.
是错误 - 在 cmake 或 cmake 脚本中用于 Qt 构建,它发生在版本之间。 when you build QT a 'disk-away' far from its sources location.
当您构建 QT 时,远离其源位置的“磁盘”。
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