Myujth

I have a problem with catkin. when I run catkin_make in my catkin workspace it says:

CMake Error: Error required internal CMake variable not set, cmake may
be not be built correctly. Missing variable is:

CMAKE_python_LINK_EXECUTABLE

my cmakelist.txt is the following:

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)

my setup.py file is the following:

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)

thanks in advance for your help