[OpenIndiana-discuss] Manual Compilation vs pkg install

[Handojo]

Hi,
I'd like to find out, why, if I compile and install a package ( example : qt-x11-free-3.3.8b.tar.gz )
It can't immediately queryable via : pkg info [Package Name]
But if I install a package using : "pkg install", I can query using "pkg info"
So how can I make a package installed by manual compilation, can be query-able via pkg info ?

Thanks
Handojo