[gdal-dev] Help with the makefile

[Seth Price]

I've been working on OpenCL for gdalwarp, and I have the majority of  
the code written. However, I'm going to need some help getting the  
compiler flags right. I need to detect an OpenCL install, then add the  
correct compiler flag(s) ("-framework OpenCL" when on the Mac).

How do I get do this? Doing this correctly is way beyond my make  
skills, and anything that I could do would be an ugly hack.

Thanks,
Seth