figure out?

[uygar]

How could I figure out which *.dll and *.a files do I really need.
The size of release project.exe file is nearly 13MB and for execute it I collect nearly 450MB dll files.

I need to eliminate some of them.

[Lykurg]

May Dependency Walker can help you.

[auba]

Yes, depency walker is great for that. Does someone know how to do it for the other two platforms?
Linux = nm -Cu or something like that? But then I only get the undefined symbols...
Mac probably the same as Linux?

for execute it I collect nearly 450MB dll files.

This is more than the DotNet collection What the hell are you doing?

[wysota]

For Unix running ldd on the application is enough. It lists all dependent libraries.