The SQLite Amalgamation
sqlite.org
sqlite.org
It turns out (or at least my benchmarks said) that link-time optimization is better in almost every case.
[1]: https://gavinhoward.com/2019/08/link-time-optimization-vs-si...
Even in that model, I’ve long found that the arguments against 1) are weak in practice (especially with a well-designed and maintained lib like SQLite) versus the additional complexity added by depending on dynamically linked libraries.
I'd say that it's of historical interest at best. The amalgamation exists to simplify matters.