dpm@microstar:~/swdev/bonobo/revcounter$ orbit-idl-2 -I/usr/share/idl/bonobo-2.0 counter.idl
orbit-idl-2 2.14.3 compiling
  mode, hide preprocessor errors, passes: stubs skels common headers 

Processing file counter.idl
Error: `Unknown' undeclared identifier

** (orbit-idl-2:508): WARNING **: counter.idl compilation failed