Well, the file “SUPPORTED_KERNELS” from that driver package says:
The alsa-drivers in this package are designed for the following kernels
- Vanilla 3.0 to 3.2
- Vanilla 2.6.18 to 2.6.39
It’s not guaranteed that they work with any newer version than above
or modified kernels by distributors.
And openSUSE 12.3 contains kernel 3.7.10. I guess that is the reason why you can’t compile it.
Why do you actually want to install this driver, it should be included in the standard kernel package anyway…
I personally never had the need to install additional audio drivers on linux in the last 10 years.