Build Ruby 4.0 with ZJIT #509
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I'll double-check if this successfully compiles on all architectures once the next preview is out. It should support the same architectures as YJIT does. |
Earlopain
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Since ruby/ruby#15368 ZJIT is compiled in automatically as long as the rust version allows it. This is ready now |
tianon
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Dec 8, 2025
Dockerfile.template
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| --enable-shared \ | ||
| ${rustArch:+--enable-yjit} \ | ||
| {{ if env.version | IN("3.2", "3.3", "3.4") then "" else ( -}} | ||
| ${rustArch:+--enable-zjit} \ |
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Whitespace nit: 😅
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| ${rustArch:+--enable-zjit} \ | |
| ${rustArch:+--enable-zjit} \ |
tianon
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Dec 8, 2025
More details at https://bugs.ruby-lang.org/issues/21221 ZJIT requires rust 1.85, so bump the version.
tianon
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Dec 9, 2025
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Thank you! ❤️ Let's do this 👀 |
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Changes: - docker-library/ruby@84bfd8d: Merge pull request docker-library/ruby#509 from Earlopain/zjit - docker-library/ruby@55e358c: Build Ruby 4.0 or greater with zjit
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Changes: - docker-library/ruby@84bfd8d: Merge pull request docker-library/ruby#509 from Earlopain/zjit - docker-library/ruby@55e358c: Build Ruby 4.0 or greater with zjit Co-authored-by: Docker Library Bot <[email protected]>
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zjit is the next big thing and at least one character better than yjit.
It currently lags behind yjit in many areas but commiters expect it to be ready and on par with yjit by the time 3.5 actually releases.
https://bugs.ruby-lang.org/issues/21221
3.5-preview1 doesn't actually contain any code for ZJIT, so this will be a draft for a while until it actually makes sense.