root@liunx-virtual-machine:/mnt/hgfs/linux共享/busybox-1.17.3# make
CC networking/ifplugd.o
In file included from /usr/include/linux/kernel.h:4:0,
from /usr/include/linux/netlink.h:4,
from networking/ifplugd.c:16:
/usr/include/linux/sysinfo.h:7:8: error: redefinition of ‘struct sysinfo’
struct sysinfo {
^
In file included from networking/ifplugd.c:9:0:
include/libbb.h:108:8: note: originally defined here
struct sysinfo {
^
scripts/Makefile.build:197: recipe for target 'networking/ifplugd.o' failed
make[1]: *** [networking/ifplugd.o] Error 1
Makefile:740: recipe for target 'networking' failed
make: *** [networking] Error 2
/usr/include/linux/sysinfo.h和include/libbb.h文件中都定义了struct sysinfo
看下你的gcc版本，是否和编译需要的不一致。
参考：http://download.csdn.net/download/jklinqing007/4623318