-// This function is called to associate the port-specific callback with the
-// child process. The return valus is port-specific.
-//
-// The file descriptor 'fd' is descriptor of a dummy pipe opened between the
-// parent and the child. No data are written to or read from this pipe, its
-// sole purpose is that the child process will close it when it terminates and
-// the parent will be notified about it if it looks at 'fd' (e.g. using
-// select()).
-//
-// wxAddProcessCallback() does whatever is necessary to ensure that 'fd' is
-// periodically (typically every event loop iteration) checked for its status
-// and that wxHandleProcessTermination() is called once 'fd' indicates the
-// child terminated.
-extern WXDLLIMPEXP_CORE int wxAddProcessCallback(wxEndProcessData *proc_data, int fd);
-
-#if defined(__WXMAC__) || defined(__WXCOCOA__)
-// For ports (e.g. DARWIN) which can add callbacks based on the pid
-extern int wxAddProcessCallbackForPid(wxEndProcessData *proc_data, int pid);
-#endif
-