MacOS: skip bundled libffi on non-x86_64 #342
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I see from the CI tests that this ended up disabling ctypes on regular x86_64 macos, will tweak to restore prior behavior. |
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When cross compiling for arm64 Macs, the bundled cpython libffi throws an unsupported cpu error. This change makes it so that Mac compilation skips the bundled libffi if a system libffi was requested.
This change also now makes it possible to build universal python binaries for x86_64/arm64, though that also requires pre-compiling dependencies (including libffi) from source for both architectures.