I'm currently working on optimizing somewhat of a moderately sized code base with maybe 40 or so external libraries. There are quite a few things that have helped that I've done, but the time it takes to link is still a serious productivity problem.
I understand what contributes to slow compile and link times in general, but I need to be able to quickly and efficiently locate the problems in code. I don't have time to manually go through and "guess," so I've been trying to develop a process in order to locate the most significant problems in the code base (so I can fix it). And to that end, I've looked into using Microsoft's DumpBin tool (using VS2015). I've tried to make sense of the data it generates, though I have had little immediate success in that regard, and on top of that, there doesn't seem to be a wealth of information on this topic.
So, as per usual, here I am, looking for suggestions.