'IUP_DEFAULT_ACTION' undeclared (first use in this function)

[newmentos]

$ go install github.com/visualfc/go-iup/iup
cc1: sorry, unimplemented: 64-bit mode not compiled in

$ CC=gcc go install github.com/visualfc/go-iup/iup
go-iup/iup/iupobject.go: In function 'iupSetCommonDefaultAction':
go-iup/iup/iupobject.go:63:20: error: 'IUP_DEFAULT_ACTION' undeclared (first use in this function)
IupSetCallback(ih,IUP_DEFAULT_ACTION,(Icallback)&goCommonDefaultAction);
^~~~~~~~~~~~~~~~~~
go-iup/iup/iupobject.go:63:20: note: each undeclared identifier is reported only once for each function it appears in