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robius-speech: link clang's runtime library on Apple platforms - #29
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The Swift bridge calls into clang's runtime library, e.g. `__isPlatformVersionAtLeast` for its `#available` checks and `__chkstk_darwin` for stack probes. rustc links Apple targets with `-nodefaultlibs`, which leaves that library out, so linking an iOS app failed (as in Robrix's TestFlight build with Xcode 26.3). The build script now links `clang_rt.ios` (or `clang_rt.iossim`/`clang_rt.osx`) from clang's resource directory.
This was referenced Oct 6, 2026
kevinaboos
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Oct 6, 2026
iOS needed a fix to `robius-speech`, see this PR: <project-robius/robius#29> windows needed a robius-packaging-commands fix, see this: <project-robius/robius-packaging-commands#15> which is now published to crates.io as v0.4.1 macOS notarization failed cuz apple's notary server is super slow today so i dunno what we can do about that. One of them did succeed eventually after like 1.5 hours. yikes
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Linking an iOS app with robius-speech fails with undefined
___isPlatformVersionAtLeast(Swift's#availablechecks) or___chkstk_darwin, since rustc links Apple targets with-nodefaultlibsand so leaves out clang's runtime library. This broke Robrix's beta.2 TestFlight build in CI (Xcode 26.3).The build script now links
clang_rt.ios(orclang_rt.iossim/clang_rt.osx) from clang's resource directory. A minimal iOS binary using robius-speech failed to link before this and links fine with it; macOS still links fine too.