If you’re a developer who is interested in “how the sausage is made” then you might want to check out Ian Lance Taylor’s blog which contains a series of articles discussed on Klaatu’s GNU World Order Episode 400 about the linker

Here are the links to the articles:

Linkers part 1 Linkers part 2 Linkers part 3 Linkers part 4 Linkers part 5 Linkers part 6