Rafael, in 3.8 kernel part of the common logic has been moved to a 
separate cpufreq_governor.c file.
According to the Makefile, the cpufreq_governor.o is to be linked to 
other cpufreq  modules.

However I see that a separate malformed cpufreq_governor.ko is created, 
and then the real modules can not work without the common logic either.

The build config is a simple 32-bit config, on top of vanilla source.

I submit a verbose build log with "ls *.ko" and some "modinfo" outputs 
attached to the bottom.
Clearly the build subsystem is misinterpreting the build intentions.

Could you please check if you see the same issue in your builds?
I am using a 32-bit October-ish Debian Testing as a build machine (Eeepc 
netbook).

Thanks, Woody