FYI there's a patch currently in review on the openembedded-core mailing list to update to cmake 3.x.
Upgrade of cmake to 3.2.2 was merged to master: http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=f8661aaeba4d4b1fb328106c36493a5019b59110
current version is 3.3.1
http://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/meta/recipes-devtools/cmake/cmake-native_3.3.1.bb