How to get CMake to recognize pthread on Ubuntu?

How to get CMake to recognize pthread on Ubuntu?

References

Reference NO 1

http://stackoverflow.com/questions/15193785/how-to-get-cmake-to-recognize-pthread-on-ubuntu

Reference NO 2

http://stackoverflow.com/questions/16909008/cmake-error-try-compile-pthreads-of-type-executable

Reference NO 3

http://stackoverflow.com/questions/11509070/cmake-forgets-about-pthreads-after-changes-in-cmakelists-txt

Reference NO 4

http://stackoverflow.com/questions/5395309/cmake-and-threads

Reference NO 5

http://stackoverflow.com/questions/15314006/qt4-wont-compile-with-cmake

Reference NO 6

http://ubuntuforums.org/showthread.php?t=718183

Reference NO 7

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Reference NO 8

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