Okay, but what if we just made static linking better?

Every once in a while, somebody gets so frustrated by the modern dynamic linking ecosystem that they suggest just throwing it out entirely and going back to static linking everything. Seriously, the topic comes up occasionally in some very nerdy circles. I was inspired to write this blog post by a recent conversation on Twitter.

Static and Dynamic Linking C Code – Flawless!
I got this diagram from another blog.

So, what’s dynamic linking? Why is it good? Why is it bad? Is it actually bad? What’s static linking, and how did things work before dynamic linking? Why did we mostly abandon it? And… What would static linking look like if we “invented” it today with some lessons learned from the era of dynamic linking? (And no, I am not talking about containers and Docker images when I say modern static linking. This isn’t one of those blog posts where we just treat a container image as morally equivalent to a static linked binary. Though I have some sympathy for that madness given that the modern software stack often feels un-fixable.)

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