The relevant part of that license is > A Compilation Process is "Eligible" if it is done using GCC, alone or with other GPL-compatible software, or if it is do

The relevant part of that license is > A Compilation Process is "Eligible" if it is done using GCC, alone or with other GPL-compatible software, or if it is done without using any work based on GCC. I'm going to hazard a guess that the Intel C++ compiler suite falls in the latter category.