More Mac tweaks.

src/cmd/mk/main.c

@@ -226,6 +226,7 @@ main(int argc, char **argv)
 	if(uflag)
 		prusage();
 	exits(0);
+	return 0;
 }
 
 void

src/cmd/mk/mk.h

@@ -1,38 +1,4 @@
-#include <utf.h>
-#include <fmt.h>
-#include <setjmp.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include	<bio.h>
-#include	<regexp9.h>
-#include <time.h>
-
-#define uchar _mkuchar
-#define ushort _mkushort
-#define uint _mkuint
-#define ulong _mkulong
-#define vlong _mkvlong
-#define uvlong _mkuvlong
-
-#define nil ((void*)0)
-
-typedef unsigned char		uchar;
-typedef unsigned short		ushort;
-typedef unsigned int		uint;
-typedef unsigned long		ulong;
-
-#define nelem(x) (sizeof(x)/sizeof((x)[0]))
-
-#define OREAD O_RDONLY
-#define OWRITE O_WRONLY
-#define ORDWR O_RDWR
-#define USED(x) if(x);else
-#define remove unlink
-#define seek lseek
-#define exits(s) exit((s) && ((char*)s)[0] ? 1 : 0)
-#define create(name, mode, perm) creat(name, perm)
-#define ERRMAX 256
+#include "sys.h"
 
 #undef assert
 #define	assert	mkassert

src/cmd/mk/shprint.c

@@ -2,6 +2,8 @@
 
 static char *vexpand(char*, Envy*, Bufblock*);
 
+#define getfields mkgetfields
+
 static int
 getfields(char *str, char **args, int max, int mflag, char *set)
 {

src/cmd/mk/unix.c

@@ -1,3 +1,4 @@
+#define NOPLAN9DEFINES
 #include	"mk.h"
 #include	<sys/wait.h>
 #include	<signal.h>