feat(xberg): build Intel macOS with ort-dynamic + onnxruntime#6
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Intel Macs have no static ONNX Runtime prebuilt (ort dropped x86_64-apple-darwin in v2.0.0-rc.11; Microsoft dropped onnxruntime-osx-x86_64 after 1.23), so the x86_64 build uses ort's load-dynamic strategy: build with the ort-dynamic feature, depend on the onnxruntime formula, and point ORT_DYLIB_PATH at its dylib via an env wrapper. arm64 macOS and Linux are unchanged.
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Pairs with the tap formula change (xberg-io/homebrew-tap#6) that builds x86_64 with ort-dynamic + depends_on onnxruntime.
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Problem
The
xbergformula builds with the default (statically-linked) ONNX Runtime feature set, which has nox86_64-apple-darwinprebuilt —ortdropped it in v2.0.0-rc.11 and Microsoft stopped shippingonnxruntime-osx-x86_64after 1.23. So there is no Intel-macOS bottle: the build simply can't link ONNX Runtime on that target.Solution
On Intel macOS only, build with
ort's load-dynamic strategy (--features …,ort-dynamic), add a runtime dependency on theonnxruntimeformula (Homebrew's x86_64 build is 1.27, which satisfies ort's ≥1.24 check), and wrap the binary with an env script that pointsORT_DYLIB_PATHat the Homebrewlibonnxruntime.dylib— because ortdlopens it at runtime rather than linking it.arm64 macOS and Linux take the unchanged
elsebranch (static ONNX Runtime, no new dependency), so their bottles are byte-identical to today.Pairs with xberg-io/xberg#1194, which adds the
ort-dynamicfeature and themacos-15-intelbottle matrix row. Because the formula buildsx86_64withort-dynamic, that xberg change needs to land first for a release to build the Intel bottle.Verification
ruby -candbrew style(only the repo's pre-existing single-quote style notes) are clean. The runtime mechanism — Homebrew's x86_64onnxruntimeloaded byort's load-dynamic path — was proven end to end on amacos-15-intelrunner in the paired PR: acargo-builtort-dynamicCLI installs the Homebrewonnxruntimeand runs real ONNX inference against it (evidence; a follow-up run re-proves the sameort-dynamicload path with the packaged CLI bundle: run 28633177260). The formula wires that same dylib viaORT_DYLIB_PATH; full bottle verification runs when the paired xberg PR merges and a release builds the Intel bottle.