/usr/src/linux/include/linux/version.h for 2.6.5 kernel?

[Ishwar Rattan <ishwar@pali.cps.cmich.edu>]

I am running kernel-2.6.5 Debian testing system. I am trying to
compile Mplayer-1.0pre4. The complilation stops with a complaint about
linux/version.h include not being there. I looked in dir
/usr/src/linux-2.6.5/include/linux/ and the file does not exit. Where
can I get this file (or it is now obsolete)??

-ishwar