Unknown CMake command "rospack"

edit

I'm trying to build old ROS package (originally made in 2009 by a third party). make returns this error:

CMake Error at CMakeLists.txt:5 (rospack):
Unknown CMake command "rospack".

1st 5 lines of CMakeLists.txt:

cmake_minimum_required(VERSION 2.6)

include($ENV{ROS_ROOT}/core/rosbuild/rosbuild.cmake)

rospack(navgtn_common)

rospack runs from terminal with admin privilege.

rosmake seems also stuck at rospack in the same manner (output).

Google tells me that using find_package might be a solution (reference) but then I haven't figured out which package to call within that function.

Env: diamondback, Ubuntu 10.10

Any idea? Thanks.