warnings about signal() calls on HP

In this build report:

  http://lists.lysator.liu.se/pipermail/snake-farm-report/2002-July/000002.html

there's a whole bunch of warnings like this:

  warning: function declaration isn't a prototype

These are all about totally vanilla calls to signal(), e.g.

	signal(SIGPIPE, SIG_IGN);

Is there a way to shut the compiler up that doesn't either uglify the
code or suppress other warnings?

--Guido van Rossum (home page: http://www.python.org/~guido/)