[cable] Compiling error - panic function?

[Eduardo Suárez]

Hi
My name is Eduardo and i would like to compile Cable in order to compile
later ITK.
I'm a newbie in Cable, but i can't avoid this compiling error:
***********************************************************
$ make
...
Cable-0_02/WrapTclFacility/wrapTclCxxObject.cxx: In 
   static member function `static void
_wrap_::TclCxxObject::SetObj(Tcl_Obj*, 
   _wrap_::CxxObject*)':
Cable-0_02/WrapTclFacility/wrapTclCxxObject.cxx:87: `panic'
   undeclared (first use this function)
Cable-0_02/WrapTclFacility/wrapTclCxxObject.cxx:87: (Each
   undeclared identifier is reported only once for each function it
appears 
   in.)
make[3]: *** [wrapTclCxxObject.o] Error 1
make[2]: *** [default_target] Error 2
make[1]: *** [default_target_WrapTclFacility] Error 2
make: *** [default_target] Error 2
eduardo at barney>rgrep -i -r panic *
WrapTclFacility/wrapTclCxxObject.cxx:    panic("Tcl_SetCxxObjectObj
called with shared object");
WrapTclFacility/#wrapTclCxxObject.cxx#:      panic("Tcl_SetCxxObjectObj
called with shared object");

$ rgrep -i -r panic *
WrapTclFacility/wrapTclCxxObject.cxx:    panic("Tcl_SetCxxObjectObj
called with shared object");
WrapTclFacility/#wrapTclCxxObject.cxx#:      panic("Tcl_SetCxxObjectObj
called with shared object");

$ man -k panic
panic: nothing appropriate
************************************************************

where is 'panic' defined?

Thx in advance
-Eduardo