[net/ipv4] Error 2

  CC      net/ipv4/ip_forward.o
  CC      net/ipv4/ip_options.o
  CC      net/ipv4/ip_output.o
  CC      net/ipv4/ip_sockglue.o
In file included from /media/Portable/linux-kernel/linux-3.0.4/arch/x86/include/asm/unistd.h:5:0,
                 from include/linux/unistd.h:7,
                 from /media/Portable/linux-kernel/linux-3.0.4/arch/x86/include/asm/seccomp_64.h:4,
                 from /media/Portable/linux-kernel/linux-3.0.4/arch/x86/include/asm/seccomp.h:4,
                 from include/linux/seccomp.h:8,
                 from include/linux/sched.h:80,
                 from /media/Portable/linux-kernel/linux-3.0.4/arch/x86/include/asm/compat.h:8,
                 from include/linux/compat.h:18,
                 from include/linux/ethtool.h:17,
                 from include/linux/netdevice.h:48,
                 from include/linux/inetdevice.h:8,
                 from net/ipv4/ip_sockglue.c:24:
/media/Portable/linux-kernel/linux-3.0.4/arch/x86/include/asm/unistd_64.h:668:2: error: invalid preprocessing directive #Define
make[2]: *** [net/ipv4/ip_sockglue.o] Error 1
make[1]: ***
make: *** [net] Error 2
[vishnu@localhost linux-3.0.4]$