please i need help

When i go to complieEMU10K1, I get this:

knoppix@BoogerBox:~/emu10k1$ make
make -Cscripts
make[1]: Entering directory `/home/knoppix/emu10k1/scripts'
/usr/src/linux-2.4/include/linux/version.h is missing. Please run make config in your kernel source tree
make[1]: *** [get_version] Error 1
make[1]: Leaving directory `/home/knoppix/emu10k1/scripts'
make: *** [opts] Error 2

where is version.h? and how do i get it?