How to setup ICC and Bazel on Windows

Hi, I setup my bazel environment on Windows, which uses clang by default. I found that CROSSTOOL allows me to set a compiler, but the documentation is very poor on this. Is there any resource available that explains how I can change the default compiler of Bazel to ICC on Windows?

The most promising solution I found is simply setting CC but CC=icc.exe doesn't invoke the compiler as expected and still uses clang. Any help is highly appreciated!