build: Use LLD for linking on Windows, for improved build speed #15324
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You're our new build engineer and I appreciate you. |
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While it's a lot slower right now, but once the GH cache is re-primed with this changed config, it "should be" ™️ faster...? |
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No substantial speedup observed... :/ Time between the first "Compiling" and the "Starting" lines is around 6 minutes, as before. I don't understand why - anyway, it was worth a try. |
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I was looking at the timestamps of the log messages in our CI runs on Windows, and saw that linking is what takes a really long time, and isn't cached.
As seen on: https://github.com/bevyengine/bevy/blob/9bd6cc0a5e8d269eb1fb6446ddd0824c446d966b/.cargo/config_fast_builds.toml#L30-L31
See also: rust-lang/rust#39915