Errors w/ zaptel install

Hello all,
I have those errors when I install zaptel… but I don’t know why and where are they come from… any ideas ?
thank you

/usr/src/zaptel# make cc -I. -O4 -g -Wall -DBUILDING_TONEZONE -DSTANDALONE_ZAPATA -DZAPTEL_CONFIG=\"/etc/zaptel.conf\" -c -o gendigits.o gendigits.c cc -o gendigits gendigits.o -lm ./gendigits gcc -I/lib/modules/2.4.26/build/include -O6 -DMODULE -D__KERNEL__ -DEXPORT_SYMTAB -I/lib/modules/2.4.26/build/drivers/net -Wall -I. -Wstrict-prototypes -fomit-frame-pointer -I/lib/modules/2.4.26/build/drivers/net/wan -I/lib/modules/2.4.26/build/include/net -DSTANDALONE_ZAPATA -o zaptel.o -c zaptel.c In file included from /usr/include/linux/prefetch.h:13, from /usr/include/linux/list.h:6, from /usr/include/linux/module.h:12, from zaptel.c:44: /usr/include/asm/processor.h:56: error: `CONFIG_X86_L1_CACHE_SHIFT' undeclared here (not in a function) /usr/include/asm/processor.h:56: error: requested alignment is not a constant In file included from zaptel.c:44: /usr/include/linux/module.h:21:34: linux/modversions.h: No such file or directory zaptel.c:120: error: parse error before "config_must_be_included_before_module" zaptel.c:120: warning: type defaults to `int' in declaration of `config_must_be_included_before_module' zaptel.c:120: warning: data definition has no type or storage class ..