Mine

root@baikal:/usr/src/zaptel# cat /proc/version
Linux version 2.4.33.3 (root@tree) (gcc version 3.4.6) #1 Fri Sep 1 01:48:52 CDT 2006

root@baikal:/usr/src/zaptel# make
make[1]: Entering directory `/usr/src/zaptel'
gcc -I/lib/modules/2.4.33.3/build/include -O6 -DMODULE -D__KERNEL__ -DEXPORT_SYMTAB -I/lib/modules/2.4.33.3/build/drivers/net -Wall -I. -Wstrict-prototypes -fomit-frame-pointer -I/lib/modules/2.4.33.3/build/drivers/net/wan -I/lib/modules/2.4.33.3/build/include/net -DMODVERSIONS -include /lib/modules/2.4.33.3/build/include/linux/modversions.h  -DSTANDALONE_ZAPATA -o zttranscode.o -c zttranscode.c
In file included from /lib/modules/2.4.33.3/build/include/linux/spinlock.h:6,
                 from /lib/modules/2.4.33.3/build/include/linux/module.h:12,
                 from zttranscode.c:28:
/lib/modules/2.4.33.3/build/include/asm/system.h: In function `__set_64bit_var':
/lib/modules/2.4.33.3/build/include/asm/system.h:190: warning: dereferencing type-punned pointer will break strict-aliasing rules
/lib/modules/2.4.33.3/build/include/asm/system.h:190: warning: dereferencing type-punned pointer will break strict-aliasing rules
zttranscode.c:37:30: linux/page-flags.h: No such file or directory
make[1]: *** [zttranscode.o] Error 1
make[1]: Leaving directory `/usr/src/zaptel'
make: *** [all] Error 2