Issue in Chapter2

[d9807302]

Hi qboticslabs:
I just follow the process in the book, when I use "catkin_make" to make face_tracker_pkg and face_tracker_control in my ros_projects_ws, the error is shown as following

CMake Error at /opt......./cmake:197
generate_messages() must be called before catkin_package() in project

I don't know how to solve it, please try to help me, thanks.

John

[qboticslabs]

Can you check this #6

[d9807302]

My CMakeList.txt is using current version, and I already add Include in my directory.
However, the problem is the same. I'm confuse how to let generate_messages() to be called before catkin_package()?

[d9807302]

I just change the sequence of CMakeFile, the previous error is disappeared, however, there are more error occurred, it seems un-link the code with OpenCV library, please let me know your comments, thanks.

cmake_minimum_required(VERSION 2.8.3)
project(face_tracker_pkg)

find_package(catkin REQUIRED COMPONENTS
cv_bridge
image_transport
roscpp
rospy
sensor_msgs
std_msgs
message_generation

)

find_package(Boost REQUIRED COMPONENTS system)

add_message_files(
FILES
centroid.msg
)

generate_messages(
DEPENDENCIES
std_msgs

)

Generate added messages and services with any dependencies listed here

catkin_package(
CATKIN_DEPENDS roscpp rospy std_msgs message_runtime

)

include_directories(
${catkin_INCLUDE_DIRS}
)

add_executable(face_tracker_node src/face_tracker_node.cpp)
target_link_libraries(face_tracker_node
${catkin_LIBRARIES}
${OpenCV_LIBRARIES}
)

[ 5%] Linking CXX executable /home/john/ros_projects_ws/devel/lib/face_tracker_pkg/face_tracker_node
CMakeFiles/face_tracker_node.dir/src/face_tracker_node.cpp.o: 於函式 Face_Detector::~Face_Detector():
face_tracker_node.cpp:(.text._ZN13Face_DetectorD2Ev[ZN13Face_DetectorD5Ev]+0x53): 未定義參考到「cv::destroyWindow(cv::String const&)」
CMakeFiles/face_tracker_node.dir/src/face_tracker_node.cpp.o: 於函式 Face_Detector::imageCb(boost::shared_ptr<sensor_msgs::Image<std::allocator > const> const&):
face_tracker_node.cpp:(.text._ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE[_ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE]+0xa8): 未定義參考到「cv::CascadeClassifier::CascadeClassifier()」
face_tracker_node.cpp:(.text._ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE[_ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE]+0xd7): 未定義參考到「cv::CascadeClassifier::load(cv::String const&)」
face_tracker_node.cpp:(.text._ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE[_ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE]+0x169): 未定義參考到「cv::imshow(cv::String const&, cv::_InputArray const&)」
face_tracker_node.cpp:(.text._ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE[_ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE]+0x236): 未定義參考到「cv::waitKey(int)」
face_tracker_node.cpp:(.text._ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE[_ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE]+0x245): 未定義參考到「cv::CascadeClassifier::~CascadeClassifier()」
face_tracker_node.cpp:(.text._ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE[ZN13Face_Detector7imageCbERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEE]+0x482): 未定義參考到「cv::CascadeClassifier::~CascadeClassifier()」
CMakeFiles/face_tracker_node.dir/src/face_tracker_node.cpp.o: 於函式 Face_Detector::detectAndDraw(cv::Mat&, cv::CascadeClassifier&):
face_tracker_node.cpp:(.text.ZN13Face_Detector13detectAndDrawERN2cv3MatERNS0_17CascadeClassifierE[ZN13Face_Detector13detectAndDrawERN2cv3MatERNS0_17CascadeClassifierE]+0x47c): 未定義參考到「cv::CascadeClassifier::detectMultiScale(cv::InputArray const&, std::vector<cv::Rect, std::allocator<cv::Rect > >&, double, int, int, cv::Size, cv::Size)」
face_tracker_node.cpp:(.text._ZN13Face_Detector13detectAndDrawERN2cv3MatERNS0_17CascadeClassifierE[_ZN13Face_Detector13detectAndDrawERN2cv3MatERNS0_17CascadeClassifierE]+0xf85): 未定義參考到「cv::imshow(cv::String const&, cv::_InputArray const&)」
collect2: error: ld returned 1 exit status
face_tracker_pkg/CMakeFiles/face_tracker_node.dir/build.make:128: recipe for target '/home/john/ros_projects_ws/devel/lib/face_tracker_pkg/face_tracker_node' failed
make[2]: *** [/home/john/ros_projects_ws/devel/lib/face_tracker_pkg/face_tracker_node] Error 1
CMakeFiles/Makefile2:366: recipe for target 'face_tracker_pkg/CMakeFiles/face_tracker_node.dir/all' failed
make[1]: *** [face_tracker_pkg/CMakeFiles/face_tracker_node.dir/all] Error 2
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2
Invoking "make -j1 -l1" failed