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i386from valid architectures when building with Hermes on …
…iOS (#30592) Summary: When building React Native application in Release mode for an iPhone Simulator _and_ targeting `armv7`, Xcode will build all architectures (due to `ONLY_ACTIVE_ARCH` set to `false`, unlike in Debug mode). As a result, Xcode will try building for `i386` (32-bit iPhone Simulator), which fails as we don’t build Hermes binaries for `i386`. Fix is to disable `i386`, since it is not supported by `Hermes` and certain `Folly` features. ## Changelog [IOS] [BREAKING] - `i386` architecture will be automatically disabled when Hermes is being used. This might be potentially breaking for your workflow if you target `armv7` devices, as you will no longer be able to test on the simulator. [IOS] [FEATURE] - Replace `flipper_post_install` with `react_native_post_install` hook. Will automatically detect if Flipper is enabled. Pull Request resolved: #30592 Test Plan: Run React Native application with Hermes enabled (or Flipper) in Release mode and it should work just fine. Reviewed By: appden Differential Revision: D25564738 Pulled By: TheSavior fbshipit-source-id: e786ab73fb0a77de5869cf9e5999726c7d29f1d4
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