If you use gcc 4.[89].x, ROOT 6.06 (note: use 6.06/08 instead of the older 6.06/06) -> Trouble compiling ROOT 6
If you use gcc 5.x, ROOT 6.06 (note: use 6.06/08 instead of the older 6.06/06) -> Memory leak in ROOT::Math::IntegratorMultiDim
Any gcc version, ROOT v5-34-00-patches -> Trouble Installing
See also -> No graphical output