"Emulated x86_64" warning doesn't go away (M1 mac)

Description

Bootstrapped a new react-native project and got the following warning on pod install:

[!] Do not use "pod install" from inside Rosetta2 (x86_64 emulation on arm64).

[!]  - Emulated x86_64 is slower than native arm64

[!]  - May result in mixed architectures in rubygems (eg: ffi_c.bundle files may be x86_64 with an arm64 interpreter)

[!] Run "env /usr/bin/arch -arm64 /bin/bash --login" then try again.

I’m running on zsh (M1 macOS 12.1), so I ran the following but the warning remained:

env /usr/bin/arch -arm64 /bin/zsh --login
cd ios
pod install

Previously (on RN 0.66) I had run the following commands to install x86_64 ffi, which allowed me to successfully run pod install on M1. Other than that, I’m working on a fresh workstation.

arch -x86_64 gem install --user-install ffi -- --enable-libffi-alloc     

Version

0.67.1

Output of npx react-native info

System: OS: macOS 12.1 CPU: (10) arm64 Apple M1 Pro Memory: 103.91 MB / 32.00 GB Shell: 5.8 - /bin/zsh Binaries: Node: 16.13.2 - ~/.nvm/versions/node/v16.13.2/bin/node Yarn: 1.22.17 - ~/.nvm/versions/node/v16.13.2/bin/yarn npm: 8.1.2 - ~/.nvm/versions/node/v16.13.2/bin/npm Watchman: 2022.01.17.00 - /opt/homebrew/bin/watchman Managers: CocoaPods: 1.11.2 - /usr/local/bin/pod SDKs: iOS SDK: Platforms: DriverKit 21.2, iOS 15.2, macOS 12.1, tvOS 15.2, watchOS 8.3 Android SDK: Not Found IDEs: Android Studio: Not Found Xcode: 13.2.1/13C100 - /usr/bin/xcodebuild Languages: Java: Not Found npmPackages: @react-native-community/cli: Not Found react: 17.0.2 => 17.0.2 react-native: 0.67.1 => 0.67.1 react-native-macos: Not Found npmGlobalPackages: react-native: Not Found

Steps to reproduce

npx react-native init foo --template react-native-template-typescript
cd foo/ios
pod install

Snack, code example, screenshot, or link to a repository

No response

[ridafkih]

What worked for me was installing cocoapods through brew, rather than gem.

sudo gem uninstall cocoapods
arch -arm64 brew install cocoapods

After that, you can navigate over to the ios/ directory in your project, and install away.

pod install

That should get you up and running on your M1 device of choice! Enjoy!

[brownieboy]

What worked for me was installing cocoapods through brew, rather than gem.

sudo gem uninstall cocoapods
arch -arm64 brew install cocoapods

I got a “pod command not found” error after installing cocoapods via brew.

I ran brew link --overwrite cocoapods to fix that. (The brew install process does actually tell you to do that, but I missed it!)