the wrong message about '_depend'

linux system: redhat 9
cross compiler: arm-elf-gcc 2.95.3
bootloader: u-boot 1.1.6
when compliing,the wrong message is below:

[root@zheng u-boot-1.1.6]# make all
for dir in tools examples post post/cpu ; do make -C $dir _depend ;
done
make[1]: Entering directory
`/home/zheng/workstation/u-boot-1.1.6/tools'
make[1]: Nothing to be done for `_depend'.
make[1]: Leaving directory `/home/zheng/workstation/u-boot-1.1.6/tools'

make[1]: Entering directory
`/home/zheng/workstation/u-boot-1.1.6/examples'
make[1]: Nothing to be done for `_depend'.
make[1]: Leaving directory
`/home/zheng/workstation/u-boot-1.1.6/examples'
make[1]: Entering directory `/home/zheng/workstation/u-boot-1.1.6/post'

make[1]: Nothing to be done for `_depend'.
make[1]: Leaving directory `/home/zheng/workstation/u-boot-1.1.6/post'
make[1]: Entering directory
`/home/zheng/workstation/u-boot-1.1.6/post/cpu'
make[1]: Nothing to be done for `_depend'.
make[1]: Leaving directory
`/home/zheng/workstation/u-boot-1.1.6/post/cpu'
make -C tools all
make[1]: Entering directory
`/home/zheng/workstation/u-boot-1.1.6/tools'
make[1]: *** No rule to make target
`/home/zheng/workstation/u-boot-1.1.6/include/configs/mysbc405.h',
needed by `envcrc.o'. Stop.
make[1]: Leaving directory `/home/zheng/workstation/u-boot-1.1.6/tools'

make: *** [tools] Error 2


Any help would be appreciated.

.

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