Gorm compilation error

[Oliver Langer]

Hi GSteppers,

i have trouble compiling Gorm 1.1.0 with gs-gui (0.10.3) and gs-base 1.1.13. It 
tells me
  In file included from GormPrivate.h:33,
                 from GormBoxEditor.m:28:
../GormCore/GormDocument.h:31:39: warning: GNUstepGUI/GSNibContainer.h: Datei 
oder Verzeichnis nicht gefunden (--> "file or directory not found")
In file included from GormPrivate.h:33,
                 from GormBoxEditor.m:28:
../GormCore/GormDocument.h:58: error: cannot find protocol declaration for 
`GSNibContainer'
In file included from GormBoxEditor.m:28:
GormPrivate.h:67: error: cannot find interface declaration for `NSClassSwapper'

Can somebody give me a hint what i am doing wrong here? Perhaps a library is 
missing? I looked for e.g. GSNibContainer and i could not find it.


Thanks in advance & 
regards,
  Oliver