Problem with configure

Hi i am trying to Install root on scientific linux but when i start the configure file it gives me this problem
[ul][Federico@pcgamma3 root]$ ./configure
Checking for source directory … /home/Federico/root/root
Configuring for linuxx8664gcc
Checking for GNU Make version >= 3.80 … ok
Checking for C compiler … gcc
Checking for C++ compiler … g++
Checking for linker (LD) … g++
Checking for F77 compiler … gfortran
Checking whether c++11 mode is supported … no
configure: c++11 mode is requested but the current compiler does not support it.
[Federico@pcgamma3 root][/ul]
Does anyone know how to fix it?

The standard compiler on SL6 is gcc 4.4.7, but for ROOT 6 you need gcc > 4.7.x (or clang).
Try ROOT 5 instead (it works with gcc 4.4.7).