I ges i should hav stoppt building the #fltk windomanager #flwm from source when its #configure script complained that it couldn’t compile `main(){return 0;}` instead of `int main(){return 0;}`
But no, i had to go on.
I am not working out why it complains about `main.C:52:25: Fehler: unvollständiger Typ »Fl_X« in geschachtelter Namensangabe verwendet`.