DUB and Gtk-d reduce size of huge executable, build dynamic dependencies

[CSim]

Hi,

I'm trying to decide whether it is better to use DLang for Gtk 
development or Vala/Genie.

When I make a simple Vala/Genie Gtk executable the file is tiny 
whereas the DLang file is huge.  First I used the default Dub 
build and the file was in excess of 60mb (assuming this includes 
debug build).  Using dub build=release the file is still more 
than 7 mb.  Using a native Vala/Genie build the file is less than 
500k.

Trying to understand what is going on, but I assume from this 
that Dub is linking static dependencies, whereas the Vala/Genie 
builds will link to dynamic libraries.


So my (two pronged) question is this:  Is there any way to 
specify in dub.json to build and link dependencies as dynamic 
libraries, and are there any other tips that can be used to 
reduce these (relatively) huge executables?