由于已定义的引用,无法获得OpenCV进行编译?

错误提示:

CMakeFiles/my_subscriber.dir/src/my_subscriber.cpp.o：在变量‘imageCallback(boost::shared_ptr<sensor_msgs::Image_<std::allocator<void> > const> const&)’中：

my_subscriber.cpp:(.text+0xb0)：对‘cv::imshow(cv::String const&,cv::_InputArray const&)’未定义的引用

CMakeFiles/my_subscriber.dir/src/my_subscriber.cpp.o：在变量‘main’中：

my_subscriber.cpp:(.text+0x405)：对‘cv::namedWindow(cv::String const&cmake 未定义的引用,int)’未定义的引用

my_subscriber.cpp:(.text+0x419)：对‘cv::startWindowThread()’未定义的引用

my_subscriber.cpp:(.text+0x66b)：对‘cv::destroyWindow(cv::String const&)’未定义的引用

collect2: error: ld returned 1 exit status

my_image_transport/CMakeFiles/my_subscriber.dir/build.make:128: recipe for target ‘/home/pdg/catkin_ws/devel/lib/my_image_transport/my_subscriber‘ failed

make[2]: *** [/home/pdg/catkin_ws/devel/lib/my_image_transport/my_subscriber] Error 1

CMakeFiles/Makefile2:1706: recipe for target ‘my_image_transport/CMakeFiles/my_subscriber.dir/all‘ failed

make[1]: *** [my_image_transport/CMakeFiles/my_subscriber.dir/all] Error 2

Makefile:138: recipe for target ‘all‘ failed

make: *** [all] Error 2

解决方法:

CMakeLists.txt中要有target_link_libraries(my_subscriber ${catkin_LIBRARIES} ${OpenCV_LIBS})

完整CMakeLists.txt文件如下:

cmake_minimum_required(VERSION 2.8.3)

project(my_image_transport)

find_package(catkin REQUIRED COMPONENTS

OpenCV

cv_bridge

image_transport

)

include_directories(

include

${catkin_INCLUDE_DIRS}

${OpenCV_INCLUDE_DIRS}

)

add_executable(my_subscriber src/my_subscriber.cpp)

target_link_libraries(my_subscriber ${catkin_LIBRARIES} ${OpenCV_LIBS})

由于未定义的引用cmake 未定义的引用,无法获得OpenCV进行编译?

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