cmake：
cmake_minimum_required(VERSION 3.17)
project(untitled10)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_PREFIX_PATH "D:/QT5-14-2/5.14.2")
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
set(QT_VERSION 5)
set(REQUIRED_LIBS Core)
set(REQUIRED_LIBS_QUALIFIED Qt5::Core)
add_executable(${PROJECT_NAME} main.cpp)
if (NOT CMAKE_PREFIX_PATH)
message(WARNING "CMAKE_PREFIX_PATH is not defined, you may need to set it "
"(-DCMAKE_PREFIX_PATH="path/to/Qt/lib/cmake" or -DCMAKE_PREFIX_PATH=/usr/include/{host}/qt{version}/ on Ubuntu)")endif ()
find_package(Qt${QT_VERSION} COMPONENTS ${REQUIRED_LIBS} REQUIRED)
target_link_libraries(${PROJECT_NAME} ${REQUIRED_LIBS_QUALIFIED})
if (WIN32)
set(DEBUG_SUFFIX)
if (CMAKE_BUILD_TYPE MATCHES "Debug")
set(DEBUG_SUFFIX "d")
endif ()
set(QT_INSTALL_PATH "${CMAKE_PREFIX_PATH}")
if (NOT EXISTS "${QT_INSTALL_PATH}/bin")
set(QT_INSTALL_PATH "${QT_INSTALL_PATH}/..")
if (NOT EXISTS "${QT_INSTALL_PATH}/bin")
set(QT_INSTALL_PATH "${QT_INSTALL_PATH}/..")
endif ()
endif ()
if (EXISTS "${QT_INSTALL_PATH}/plugins/platforms/qwindows${DEBUG_SUFFIX}.dll")
add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
COMMAND ${CMAKE_COMMAND} -E make_directory
"$<TARGET_FILE_DIR:${PROJECT_NAME}>/plugins/platforms/")
add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy
"${QT_INSTALL_PATH}/plugins/platforms/qwindows${DEBUG_SUFFIX}.dll"
"$<TARGET_FILE_DIR:${PROJECT_NAME}>/plugins/platforms/")endif ()
foreach (QT_LIB ${REQUIRED_LIBS})
add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy
"${QT_INSTALL_PATH}/bin/Qt${QT_VERSION}${QT_LIB}${DEBUG_SUFFIX}.dll"
"$<TARGET_FILE_DIR:${PROJECT_NAME}>")endforeach (QT_LIB)
endif ()
代码：
include <QCoreApplication>
include <QDebug>
int main(int argc, char *argv[]) {
QCoreApplication a(argc, argv);
qDebug() << "Hello World";
return QCoreApplication::exec();
}
报错：
