kernel compilation error

["J.A.Serralheiro" <mrserra@ci.uc.pt>]

hi. I already posted a question, but got any replies.
Once I had a power fail, and on reboot, there were some errors. So, after
fsck some files in /lib were missing. 

Now im trying to compile kernel 2.4.5 and in keep getting errors
about undefined labels, and unknown variables and things like that.

I'm new at this, only a few months, as mainly as a user. How can I 

put things back so that gcc doesnt complain any longer


I truly apreciate some assistance

greetings
J.A.Serralheiro