problem in compiling kernel

[Giuseppe Sacco <giuseppe@eppesuigoccas.homedns.org>]

Hi all,
every time I try compile the kernel on an SGI O2 O receive this error:

 HOSTCC  scripts/basic/fixdep
 HOSTCC  scripts/basic/split-include
 HOSTCC  scripts/basic/docproc
 SHIPPED scripts/kconfig/zconf.tab.h
 HOSTCC  scripts/kconfig/conf.o
 HOSTCC  scripts/kconfig/mconf.o
 SHIPPED scripts/kconfig/zconf.tab.c
 SHIPPED scripts/kconfig/lex.zconf.c
 HOSTCC  scripts/kconfig/zconf.tab.o
 HOSTLD  scripts/kconfig/conf
scripts/kconfig/conf -o arch/mips/Kconfig
arch/mips/Kconfig:1611: can't open file "arch/mips/oprofile/Kconfig"

Anione knows what the missing file is and how to download/create it?

Thanks a lot,
Giuseppe