how to set up eclipse with ddt and gtkd with dmd the proper way?

[maarten van damme]

A little update: I've succesfully compiled gtkD and I now have a gtkD.lib.
I've copied it to the lib folder where dmd was installed. now I try to
compile my first example without eclipse to start with.
I use dmd -IC:\D\gtkD\src -L C:\D\gtkD\src\build\gtkD.lib main.d
and I get as output

OPTLINK (R) for Win32  Release 8.00.12
Copyright (C) Digital Mars 1989-2010  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
main.obj(main)
 Error 42: Symbol Undefined _D3gtk4Main12__ModuleInfoZ
main.obj(main)
 Error 42: Symbol Undefined _D3gtk5Label12__ModuleInfoZ
main.obj(main)
 Error 42: Symbol Undefined _D3gtk10MainWindow12__ModuleInfoZ
main.obj(main)
 Error 42: Symbol Undefined
_D3gtk10MainWindow10MainWindow5_ctorMFAaZC3gtk10MainWindow10MainWindow
main.obj(main)
 Error 42: Symbol Undefined _D3gtk4Main4Main4initFAAaZv
main.obj(main)
 Error 42: Symbol Undefined _D3gtk5Label5Label5_ctorMFAabZC3gtk5Label5Label
main.obj(main)
 Error 42: Symbol Undefined _D3gtk4Main4Main3runFZv
main.obj(main)
 Error 42: Symbol Undefined _D3gtk10MainWindow10MainWindow7__ClassZ
main.obj(main)
 Error 42: Symbol Undefined _D3gtk5Label5Label7__ClassZ
--- errorlevel 9
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