This code is based on an anonymous contribution at http://hints.macworld.com/article.php?story=2008051406323031.
It was updated by Steven Merrill to compile without deprecation warnings on Mac OS X 10.6.
This program is a slightly updated version of the code at http://hints.macworld.com/article.php?story=2008051406323031.
It will build a "click" binary that can be used inside of AppleScripts (and the like) to click the mouse under Mac OS X.
Building the code
I plan to make a Makefile, but for now,
gcc -o click click.m -framework ApplicationServices -framework Foundation.
click -x [x coordinate] -y [y coordinate]
If no value is specified, 0 will be used.