Advael/GUFG — pull request #26 by sectoidman (2012-08-03 06:08:21+00:00)
Title: Case-sensitivity is a thing, apparently.

So on windows, INCLUDE(CPACK) is the same as INCLUDE(cpack) or INCLUDE(CPack), and the file it's looking for is actually named CPack.cmake. On linux, the aforementioned includes will be looking for three different files because (do'h) linux is case-sensitive.