ROOT

Download
Get root source here.

Intel compiler (icc)
Optimizations for you computer:

GCC
Optimizations to Core 2 64bits:

Optimizations like -march=nocona could cause linkage errors.

Configure and make
Choose your architecture/compiles, for example:


 * linux - gcc 32 bits
 * linuxicc - icc 32 bits
 * linuxx8664gcc - gcc 64 bits
 * linuxx8664icc - icc 64 bits