RH需要的libncurses.so.4是作什么的?

[weixin_38050602]

在RH9下.运行ONMONITOR时提示一下错误:

informix]$ onmonitor
Incorrectly built binary which accesses errno, h_errno or _res directly. Needs to be fixed.
onmonitor: error while loading shared libraries: libncurses.so.4: cannot open shared object file: No such file or directory


查看/usr/lib只有 libncurses.so.5,无.4文件, libncurses.so.的作用是什么.如果自己建立一个 libncurses.so.4文件怎么建立,?
各位大虾请了!!!