Jacek Konieczny [Wed, 3 Jul 2019 08:27:53 +0000 (10:27 +0200)]
use sane CXXFLAGS
intel-graphics-compiler, like the rest of compute-runtime is designed
for newer Intel processors, so it uses all the newest features by
default, but we need to be able to use it on our builders too, to build
the intel-compute-runtime package.