catkin错误缺少变量CMAKE_python_LINK_EXECUTABLE

Question

我对柳絮有问题。当我在catkin工作区中运行catkin_make时，它说：

  

CMake错误：未设置内部CMake变量所需的错误，cmake可能   不能正确构建。缺少的变量是：

     

CMAKE_python_LINK_EXECUTABLE

我的cmakelist.txt如下：

cmake_minimum_required(VERSION 2.8.3)
project(opencv_face_recognition)

find_package(catkin REQUIRED COMPONENTS
  cv_bridge
  image_transport
  rospy
  sensor_msgs
  std_msgs
)


find_package(PythonLibs REQUIRED)
find_package(OpenCV REQUIRED)


catkin_python_setup()


catkin_package(
#  INCLUDE_DIRS include
#  LIBRARIES opencv_face_recognition
#  CATKIN_DEPENDS cv_bridge image_transport rospy sensor_msgs std_msgs
#  DEPENDS system_lib
)

include_directories(
  ${OpenCV_INCLUDE_DIRS}
  ${catkin_INCLUDE_DIRS}

)

add_executable(
   ${PROJECT_NAME}_node src/webcam_cv3.py
)



target_link_libraries(${PROJECT_NAME}_node

   ${OpenCV_LIBRARIES}
   ${catkin_LIBRARIES}

 )

catkin_install_python(PROGRAMS
  src/webcam_cv3.py
  DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION}
 )


SET_TARGET_PROPERTIES(opencv_face_recognition_node PROPERTIES LINKER_LANGUAGE python)

我的setup.py文件如下：

from distutils.core import setup
from catkin_pkg.python_setup import generate_distutils_setup

# fetch values from package.xml
setup_args = generate_distutils_setup(
    packages=['opencv_face_recognition'],
    package_dir={'': 'src'})

setup(**setup_args)

在此先感谢您的帮助