Qmail Compile problems (C headers)

[key134]

I am trying to compile Qmail and I am getting this error message when I type "make setup check":
./compile qmail-local.c
qmail-local.c:1: sys/types.h: No such file or directory
qmail-local.c:2: sys/stat.h: No such file or directory
make: *** [qmail-local.o] Error 1

I understand some C++ so I kinda get what the error means. I obviously don't have these header files on my system. Or maybe I do and they aren't being found? If so, how can I get this to compile? I am more or less a linux newbie so if you have any suggestions, pretend I am incredibly stupid.

Thanks a lot,

Keith