Undefined reference to pcl_ros::transformPointCloud

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I am getting undefined reference to pcl_ros::transformPointCloud in the linking phase of catkin_make. This is the source code:

void cloud_cb_cam1 (const sensor_msgs::PointCloud2ConstPtr& input)
{
  cam1_data_valid = true;

  sensor_msgs::PointCloud2 ros_cam1;
  pcl_ros::transformPointCloud("pf1_link", *input, ros_cam1, *tf_listener);
  pcl_conversions::toPCL(ros_cam1, pcl_cam1);

  if (cam1_data_valid && cam2_data_valid)
  {
    cam1_data_valid = false;
    cam2_data_valid = false;
    pcl_combine();
  }
}

My CMakeLists includes these libraries:

cmake_minimum_required(VERSION 2.8.3)
project(pc_combine)

find_package(catkin REQUIRED COMPONENTS
  roscpp
  rospy
  std_msgs
)
find_package(PCL REQUIRED)

catkin_package(
)

include_directories(
  ${catkin_INCLUDE_DIRS}
  ${PCL_INCLUDE_DIRS}
)

target_link_libraries( pc_combine
  ${catkin_LIBRARIES}
  ${PCL_LIBRARIES}
)

link_directories(${PCL_LIBRARY_DIRS})
add_definitions(${PCL_DEFINITIONS})

Am I missing any libraries?