I have written a software with English interface. I hope it will have another language interface such as zh_CN. So I modified the file "configure.in" ALL_LINGUAS="" to ALL_LINGUAS="zh_CN" and create file "po/zh_CN.po" which has been translated. After I input "make", the file "po/zh_CN.gmo" will be created. But after I input "make install", the file *.mo can not be installed. Why? How to do?