make menuconfig后，出现大量警告“trying to assign nonexistent symbol”？

准备编译内核，进入源代码后，输入“make menuconfig”后，出现大量的警告信息，最后几行如下：

。。。。。。（前面还有很多）

/boot/config-2.6.20-16-generic:4064: trying to assign nonexistent symbol TEXTSEARCH_BM
/boot/config-2.6.20-16-generic:4065: trying to assign nonexistent symbol TEXTSEARCH_FSM
/boot/config-2.6.20-16-generic:4066: trying to assign nonexistent symbol PLIST
/boot/config-2.6.20-16-generic:4067: trying to assign nonexistent symbol HAS_IOMEM
/boot/config-2.6.20-16-generic:4068: trying to assign nonexistent symbol HAS_IOPORT
/boot/config-2.6.20-16-generic:4069: trying to assign nonexistent symbol GENERIC_HARDIRQS
/boot/config-2.6.20-16-generic:4070: trying to assign nonexistent symbol GENERIC_IRQ_PROBE
/boot/config-2.6.20-16-generic:4071: trying to assign nonexistent symbol GENERIC_PENDING_IRQ
/boot/config-2.6.20-16-generic:4072: trying to assign nonexistent symbol X86_SMP
/boot/config-2.6.20-16-generic:4073: trying to assign nonexistent symbol X86_HT
/boot/config-2.6.20-16-generic:4074: trying to assign nonexistent symbol X86_BIOS_REBOOT
/boot/config-2.6.20-16-generic:4075: trying to assign nonexistent symbol X86_TRAMPOLINE
/boot/config-2.6.20-16-generic:4076: trying to assign nonexistent symbol KTIME_SCALAR
/boot/config-2.6.20-16-generic:4077: trying to assign nonexistent symbol NO_IDLE_HZ

各位前辈，可曾碰到这个问题阿？最后大概是怎么解决的阿？先谢谢了！