Compiling XviD - nasm chokes on -I

Hello,

I am trying to compile the latest CVS snapshot, but the same problem happened 
when I downloaded the 0.9 core. When I run make and it comes to the line with 
nasm in it, it weirdly chokes on the -I, the include file path.

nasm -f elf -I../../src/utils/x86_asm ../../src/utils/x86_asm/cpuid.asm -o 
../../src/utils/x86_asm/cpuid.o
nasm: unrecognised option `-I'
type `nasm -h' for help
make: *** [../../src/utils/x86_asm/cpuid.o] Error 1

I have nasm 0.98, and after scanning through the forums on xvid.org I found a 
different nasm related problem, that suggested getting a special nasm version 
patched for sse2 code (I realize this has probably NOTHING to do with my 
problem). So just to be sure I got that version and tried again, with the 
exact same problem. What's going wrong here?

Daniel