Patching from floam with some edits by myself:

I was working on a patch earlier to fix some more things up to be more
modern, and I added a couple lines from that cleanup patch I showed you
on irc. Some commented code was removed, some stuff was made to not be
broke (old head usage), the makefile should install things better, and a
a few GCC warnings were gagged. I also attempted to version it but
you'll probably want to change that to whatever versioning rules you
decide on using.

code/qcommon/vm_x86.c

@@ -1168,7 +1168,7 @@ int	VM_CallCompiled( vm_t *vm, int *args ) {
 				"	movl %%edi,%1		\r\n" \
 				"	popal				\r\n" \
 				: "=m" (memProgramStack), "=m" (memOpStack) \
-				: "m" (memEntryPoint), "0" (memProgramStack), "1" (memOpStack) \
+				: "m" (memEntryPoint), "m" (memProgramStack), "m" (memOpStack) \
 				: "si", "di" \
 		);