I am looking for a library with following features:
Minimalistics with Random Forest learning and classification
LGPL licenced
In C++
CMake build system - not compulsory
So far Waffles looks good, any other contenders ?
How about TMVA or alglib? I haven't used them personally, but the license terms look to be favorable for your uses, and both are C++. Not sure if they have the specifics you're looking for, though.