we're relying on the system compiler too much here... ROSE requires GCC 4.4.x, so we need to make sure that's provided (e.g. via a build dependency)

we don't want to step down from a dummy toolchain though, to retain the freedom of using PerfExpert with applications built with any compiler toolchain (building PerfExpert + all deps with e.g. `ictce` isn't a viable option)