pcl library linking problem

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Hi, I am facing a linking problem between pcl and ROS. I am using Ubuntu 14.04 and QtCreator. I am trying to convert the laser data to OpenCV image, now I have the pointcoud2 so I need to convert it to ros image and afterwards to OpenCV image. I am getting this error message:

/home/horczech/robohockey/src/player/src/playnode.cpp:91: error: 'toROSMsg' is not a member of 'pcl'
       pcl::toROSMsg (cloud, pclImage); //convert the cloud
       ^

And the row where I am including necessary library is underscored and when I hover obove it with my mouse it is saying that "pcl/io/pcd_io.h : No such file or directory "

When I run catkin make I am getting this message:

horczech@Ubuntu:~/robohockey$ catkin_make
Base path: /home/horczech/robohockey
Source space: /home/horczech/robohockey/src
Build space: /home/horczech/robohockey/build
Devel space: /home/horczech/robohockey/devel
Install space: /home/horczech/robohockey/install
####
#### Running command: "make cmake_check_build_system" in "/home/horczech/robohockey/build"
####
####
#### Running command: "make -j4 -l4" in "/home/horczech/robohockey/build"
####
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