$ sudo apt-get update
$ sudo apt-get install libqtdeclarative4-perl 

libqtdeclarative4-perl is installed in your system.

Make ensure the libqtdeclarative4-perl package were installed using the commands given below,

$ sudo dpkg-query -l | grep libqtdeclarative4-perl *

You will get with libqtdeclarative4-perl package name, version, architecture and description in a table

libqtdeclarative4-perl package basic information: