Is there some way we can make m5 link incrementally, or in other words link subsystems together independently and then as units with each other? The final linking step seems to take a long time with ld at 100% cpu usage. That makes sense when you consider it's linking a screen and a half of object files. Breaking things into smaller ".o"s that then get linked would help because a lot of the symbols would get resolved locally and wouldn't cause a search over the all the other object modules. Even better would be to restrict the set of symbols that get linked between subsystems so the search is over a smaller space as well, as apposed to just being done fewer times, but I don't know how we could do that without specializing to one set of tools or using obscure features like anonymous namespaces. Anonymous namespaces might not even help because they hide symbols by putting them in generated unique namespaces, but the linker probably doesn't know that and would go through them all the time anyway. This isn't broken perse, but since you have to link every time you build and I'm on a slower machine it's very annoying.
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