Makefile:119: *** Error: UCLINUX_KERNEL seems to be pointed to wrong location, o

??? Building MRUA时，运行第二步make时，出现如下错误：
??? [root@wang mrua_SMP8634_2.8.8.0_GCC4_dev.mips]# make
Makefile:119: *** Error: UCLINUX_KERNEL seems to be pointed to wrong location, or kernel is not configured.。 停止。
解决方法：
??? [root@wang 桌面]# export UCLINUX_KERNEL=/home/wangcm/桌面/smp86xx_kernel_source_2.8.8.0/linux-2.6.15
??? 然后[root@wang mrua_SMP8634_2.8.8.0_GCC4_dev.mips]# source MRUA.env,再然后

??? [root@wang mrua_SMP8634_2.8.8.0_GCC4_dev.mips]# make kernel