Make file for both 32 and 64 bit builds

Question

I need to create a make file which will allow the user to choose to create either a 64 or 32 bit build. I'm new to make and am not sure what the best way to do this would be. Does anyone have any suggestions?

Thanks

Answer 1

Have a look at this article. The long and short of it is to have separate output directories for each architecture, and show make how to find the source from each of them.