[gentoo-user] gcc-config: Active gcc profile is invalid!

[Alan Mackenzie]

Hi, Gentoo.

I got the error message

    gcc-config: error: could not run/locate 'x86_64-pc-linux-gnu-gcc'

whilst trying to emerge something.  Running gcc-config myself
# gcc-config -l, I get back this error message:

     * gcc-config: Active gcc profile is invalid!
     [1] x86_64-pc-linux-gnu-4.4.5

.  4.4.5 is indeed the version of my gcc package.  This got updated very
recently.

What is a "gcc profile"?  Where can I find it, and what do I need to do
to make it valid?

-- 
Alan Mackenzie (Nuremberg, Germany).