openwrt编译libubox时报错"missing dependencies for the following libraries: librt.so.1"如何处理?

答：往libubox的Makefile中加入+librt即可解决依赖关系
示例如下:

$ cat <openwrt source code>/package/libs/libubox/Makefile
...
define Package/libubox
...
DEPENDS:=+librt
endef
...