modversions.h missing

[Pollywog <pollywog@shadypond.com>]

I was trying to compile an app and I got this error about modversions.h
What do I have to do to get modversions.h ?  I thought I had to answer "Y"
to the question about setting module versions when I compiled my kernel
(2.2.12) and I did that.

make[1]: Entering directory `/home/pollywog/bcrypt-0.2b-sw/kgsha'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/pollywog/bcrypt-0.2b-sw/kgsha'
make[1]: Entering directory `/home/pollywog/bcrypt-0.2b-sw/src'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/pollywog/bcrypt-0.2b-sw/src'
make[1]: Entering directory `/home/pollywog/bcrypt-0.2b-sw/mod'
gcc -O6 -Wall -fno-strength-reduce -D__KERNEL__ -DMODULE -DMODVERSIONS
-I../include -include /usr/include/linux/modversions.h    -c bc_dev.c -o
bc_dev.o
cpp: /usr/include/linux/modversions.h: No such file or directory
make[1]: *** [bc_dev.o] Error 1

thanks

--
Andrew