Doesn't work for me:

> while setting up the build environment: a `powerpc-linux' is required 
> to build 
> `/gnu/store/gmq50nq4xf4wa0msqms140s3jkk5v47q-guile-bootstrap-2.0.drv', 
> but I am a `x86_64-linux'

even though QEMU has been set up, though that's more a local 
configuration problem than a problem in gcc package.

Greetings,
Maxime.