qtserialport with CMake in qtcreator-ros-plugin? - qt

Question

I'm trying to compile qtserialport to my project in QtCreator4.9.2 with ROS plugin in.
Of course, I had follow the doc to install qtserialport to my Ubuntu16.04. And then, I had do some tests like this:
#include "QtSerialPort/qserialport.h"
#include "QtSerialPort/qserialportinfo.h"
...
Q_FOREACH(const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
ROS_INFO("Name: %s", info.portName().toStdString().c_str());
ROS_INFO("Description: %s", info.description().toStdString().c_str());
ROS_INFO("Manufacturer: %s", info.manufacturer().toStdString().c_str());
...
}
But, get erros:
undefined reference to 'QSerialPortInfo::availablePorts()'
undefined reference to 'QSerialPortInfo::portName() const'
undefined reference to 'QSerialPortInfo::description() const'
...
undefined reference to 'QSerialPortInfo::~QSerialPortInfo()'
You know, I'm working with CMake, so the official docs about qmake or .pro introductions is useless to me. And I had find some suggestions like this, however, I'm confused with this: how to make the qtserialport as a module?
Anyway, all I want to say is that: how can I compile qtserialport with my ros CMake project? And certainly, it should also work with my QtCreator.
CMakeLists.txt:
cmake_minimum_required(VERSION 2.8.0)
project(xxx)
add_compile_options(-std=c++11)
find_package(catkin REQUIRED COMPONENTS qt_build roscpp)
include_directories(${catkin_INCLUDE_DIRS})
catkin_package()
rosbuild_prepare_qt4(QtCore QtGui QtOpenGL)
file(GLOB QT_RESOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} rsources/*.qrc)
file(GLOB_RECURSE QT_MOC RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} FOLLOW_SYMLINKS include/xxx/*.hpp)
QT4_ADD_RESOURCES(QT_RSOURCES_CPP ${QT_RESOURCES})
QT4_WRAP_CPP(QT_MOC_HPP ${QT_MOC})
set(QT_SOURCES ...)
if(MSVC)
set(...)
endif(MSVC)
add_definitions(...)
include_directories(...)
set(EXTERNAL_LIBRARIES OpenThreads osg osgDB osgViewer osgUtil osgText osgGA pthread lz4 bz2)
add_executable(... ${QT_SOURCES} ${QT_RESOURCES_CPP} ${QT_MOC_HPP})
target_link_libraries(xxx ${QT_LIBRARIES} ${EXTERNAL_LIBRARIES} ${catkin_LIBRARIES})
install(TARGETS xxx RUNTIME DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION})
Help!

Answer 1

QtCreator4.9.2 is your IDE's version, not the framework's version you probably are using Qt 5.1x.x version.
If you want to compile out of your IDE this line is essential
set(CMAKE_PREFIX_PATH your/qt/path/which/can/be/obtained)
check this path from QT Creator > Open a Qt Project > Projects option on Left bar > Project Build Option, on CMake settings check cmake_prefix_path
# Before add_executable
find_package(Qt5 COMPONENTS Core SerialPort REQUIRED)
# After add_executable
target_link_libraries(${PROJECT_NAME} PRIVATE
Qt5::Core Qt5::SerialPort)
You also can learn package names under CMake folder of your Qt path.
/your/sys/path/Qt5/lib/cmake