Has anyone tried to compile Crystal with cosmopolitan libc for a portable binary?
If not, how hard is it generally to make Crystal work with an alternative libc?
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I’m not aware of anyone trying that.
Effort depends on how much the interface differs from the existing C standard libraries. But it’s likely not that much for the majority of bindings. So you could copy and paste a lot. I’d expect to get probably > 90% working pretty quickly. Figuring out all the details in edge cases can be time consuming, though.
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Previous mention on the issue tracker: Can crystal lang implement the APE binary format? · Issue #12753 · crystal-lang/crystal · GitHub
I might give this a go after the Battlesnake spring league (a few months). My free time is pretty booked until then.