newer kernel headers stop exporting _syscall#() macro's, so let's insert
some workarounds to handle this ...

util-linux-2.13 doesnt use _syscall#() anymore

http://bugs.gentoo.org/150852

--- lib/my-syscall.h
+++ lib/my-syscall.h
@@ -0,0 +1,12 @@
+#ifndef __MY_SYSCALL_H__
+#define __MY_SYSCALL_H__
+
+#ifndef _syscall5
+# define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
+type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
+{ \
+	return (type) syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
+}
+#endif
+
+#endif
--- fdisk/llseek.c
+++ fdisk/llseek.c
@@ -10,6 +10,8 @@
 #include <errno.h>
 #include <unistd.h>
 
+#include "my-syscall.h"
+
 extern long long ext2_llseek (unsigned int, long long, unsigned int);
 
 #ifdef __linux__
--- fdisk/sfdisk.c
+++ fdisk/sfdisk.c
@@ -177,6 +177,7 @@
 #endif
 
 #ifndef use_lseek
+#include <my-syscall.h>
 static __attribute__used
 _syscall5(int,  _llseek,  unsigned int,  fd, ulong, hi, ulong, lo,
        loff_t *, res, unsigned int, wh);
--- partx/partx.c
+++ partx/partx.c
@@ -339,6 +339,7 @@
 
 #ifdef NEED__llseek
 #include <linux/unistd.h>       /* _syscall */
+#include "../lib/my-syscall.h"
 static
 _syscall5(int,  _llseek,  uint,  fd, ulong, hi, ulong, lo,
 	  long long *, res, uint, wh);