`Undefined Symbol in relocation` when building example on linux x86_64 about basic-webserver HOT 5 OPEN

This should fix for at least regular linux: roc-lang/roc#6515

I'm not sure what is going on with musl yet.

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This is not caused by roc-lang/roc#3609

It is probably caused by the compiler-rt related changes that got pulled into this PR: roc-lang/roc#6216

Zig should be automatically bundling the compiler-rt and libc related functions that we use in the builtins. That should include memcpy and memset. My guess is that it is still getting removed by DCE for some reason.

Need to circle back to this when I have more time, but first steps would be to double check the zig generated llvm ir actually has these functions and if it does, double check our llvm DCE related passes and such.

EDIT: If I don't circle back to this in like a week and no one else fixes it, can someone ping me?

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Temporary workaround:

roc build ~/gitrepos/basic-webserver/examples/todos.roc --linker=legacy

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this bug seems to block the git build pipeline. Should we, as a temporary workaround change the ci/all_tests.sh script, so it uses --linker=legacy until the bug is fiexed?

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@bhansconnect Ping! :)

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