[PATCH] Fix compilation on Mac OS X 10.6.8

Here's a fix for compilation failures on Mac OS X 10.6.8. As a newbie to the codebase, and one with not much Makefile experience in general, I'm more than happy to make any requested changes, or to take an entirely different approach if necessary. See previous discussion for more context:

[PATCH] Fix compilation on Mac OS X 10.6.8

Here's a fix for compilation failures on Mac OS X 10.6.8. As a newbie to the codebase, and one with not much Makefile experience in general, I'm more than happy to make any requested changes, or to take an entirely different approach if necessary. See previous discussion for more context: