How do you incorporate support for ESRI's fgdb format into GDAL / ogr2ogr on Mac OS X 10.8?
Well, self, I'm glad you asked (hopefully you won't have to spend a whole day figuring this out next time).
Now, you should be able to, for example, convert fgdb files to better, more open formats by running
Why You Have to Manually Add FGDB Support
Support for ESRI's fgdb format can't be built into GDAL by default as it is a non-open source library. However, it can be added. Hence, the machinations above.
I found a few, disparate articles that really helped me put this all together into a cohesive piece
This did not work for me for OS X 10.11. Glad I found this:
The gist of it: