OpenCV, CMake w Eclipse Mars

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Dears,

I'd like to understand configuration for OpenCV build (I have latest source from github). Within CMAKE configuration I specified "Eclipse CDT4 - MinGW Makefiles ". By CMAKE generating then I got response such as

Eclipse version is set to 4.3 (Kepler). Adjust CMAKE_ECLIPSE_VERSION if this is wrong.

Since I am just starting I installed latest Eclipse 4.5 Mars. CMAKE_ECLIPSE_VERSION is giving me only 4.3 (Kepler). Is it still OK for Eclipse Mars or should downgrade to Kepler?

Thank you very much.

Best regards, Peter

P.S. comment on 9/16/2015

My Eclipse-Mars identifies project in build dir (.project/.cproject) to import but creating project I got:

Actually I'd like to create Eclipse project from examples & tutorials which are within opencv build dir?

Thanks.