出现的问题如下：
rm -f board/trab/trab_fkt
board/voiceblue/eeprom
rm -f board/integratorap/u-boot.lds
board/integratorcp/u-boot.lds
[root@localhost u-boot-1.1.4]# make
UB4020_config
Configuring for UB4020
board...
[root@localhost u-boot-1.1.4]#
make
make[1]: Entering directory
`/work/linux-armfans/SCRubootnorV11/u-boot-1.1.4/tools'
make[1]: `.depend' is up to
date.
make[1]: Leaving directory
`/work/linux-armfans/SCRubootnorV11/u-boot-1.1.4/tools'
make[1]: Entering directory
`/work/linux-armfans/SCRubootnorV11/u-boot-1.1.4/examples'
make[1]: `.depend' is up to
date.
make[1]: Leaving directory
`/work/linux-armfans/SCRubootnorV11/u-boot-1.1.4/examples'
make[1]: Entering directory
`/work/linux-armfans/SCRubootnorV11/u-boot-1.1.4/post'
make[1]: `.depend' is up to
date.
make[1]: Leaving directory
`/work/linux-armfans/SCRubootnorV11/u-boot-1.1.4/post'
make[1]: Entering directory
`/work/linux-armfans/SCRubootnorV11/u-boot-1.1.4/post/cpu'
make[1]: `.depend' is up to
date.
make[1]: Leaving directory
`/work/linux-armfans/SCRubootnorV11/u-boot-1.1.4/post/cpu'
make -C tools all
make[1]: Entering directory
`/work/linux-armfans/SCRubootnorV11/u-boot-1.1.4/tools'
make[1]: *** No rule to make target
`/usr/lib/gcc/i386-redhat-linux/4.1.2/include/stddef.h', needed by
`img2srec.o'. Stop.
make[1]: Leaving directory
`/work/linux-armfans/SCRubootnorV11/u-boot-1.1.4/tools'
make: *** [tools] Error 2
[root@localhost
u-boot-1.1.4]#
解决方法是：执行make distclean
在进行config和make就可以了。