After updating to Xcode 12 I get The linked library 'libPods-*****.a' is missing one or more architectures required by this target: arm64.

[Piero87]

Description

After updating to Xcode 12 I get this error:

The linked library 'libPods-*****.a' is missing one or more architectures required by this target: arm64.

Anyone knows how can solve it?

[justinjoyn]

Running into this after I updated Xcode to v12.

ld: in /Users/user/Projects/example/ios/Pods/OpenSSL-Universal/ios/lib/libcrypto.a(cryptlib.o), building for iOS Simulator, but linking in object file built for iOS, file '/Users/user/Projects/example/ios/Pods/OpenSSL-Universal/ios/lib/libcrypto.a' for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

On "react-native": "0.62.2"

[github-actions]

⚠️	Missing Environment Information
ℹ️	Your issue may be missing information about your development environment. You can obtain the missing information by running react-native info in a console.

[SConaway]

Please go back and fill out the issue template: what details / versions are you running?

[genie09]

Running into this after I updated Xcode to v12.

ld: in /Users/user/Projects/example/ios/Pods/OpenSSL-Universal/ios/lib/libcrypto.a(cryptlib.o), building for iOS Simulator, but linking in object file built for iOS, file '/Users/user/Projects/example/ios/Pods/OpenSSL-Universal/ios/lib/libcrypto.a' for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

On "react-native": "0.62.2"

Same error, here. I've met it when I run detox build ios.

env)
RN 0.63.2
Xcode 12.0, Build version 12A7209

command)
/Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild -workspace ios/HelloDetox.xcworkspace -scheme HelloDetox -configuration Release -sdk iphonesimulator -derivedDataPath ios/build

[swplzj]

❌ error: The linked library 'libPods-xxx.a' is missing one or more architectures required by this target: arm64. (in target 'xxx' from project 'xxx')

error Failed to build iOS project. We ran "xcodebuild" command but it exited with error code 65. To debug build logs further, consider building your app with Xcode.app, by opening licaijia.xcworkspace. Run CLI with --verbose flag for more details.

env:
RN 0.61.5
Xcode Version 12.0 (12A7209)
macOS Big Sur Version 11.0 Beta (20A5374g)

[david-gregorian]

I also have the same issue after updating to Xcode 12.0

RN 0.63.2
Xcode Version 12.0 (12A7209)
macOS Catalina 10.15.5 (19F101)

[ilichh1]

I had a similar issue... my ‘quick’ (It took me hours) fix was:

• Create a new project with npx react-native init
• Install dependencies and make sure the new project builds and runs on Xcode.
• Copy all the source code from my pre-xcode-update project into the brand new, post-xcode-update compatible project.
• Install all the previous dependencies required one by one with npm and pod install (If needed).

Luckily, the project’s structure allowed me to do this, but it was really frustrating and confusing. Hope this get resolved for future developers.

✌️

[genie09]

I had a similar issue... my ‘quick’ (It took me hours) fix was:

• Create a new project with npx react-native init
• Install dependencies and make sure the new project builds and runs on Xcode.
• Copy all the source code from my pre-xcode-update project into the brand new, post-xcode-update compatible project.
• Install all the previous dependencies required one by one with npm and pod install (If needed).

Luckily, the project’s structure allowed me to do this, but it was really frustrating and confusing. Hope this get resolved for future developers.

✌️

thx, but I ran detox under fresh react-native init project which used xcode 12.

[grabbou]

For everyone running into

building for iOS Simulator, but linking in object file built for iOS for architecture arm64

Please upgrade to the latest CocoaPods (at least 1.10.0).

If doesn't work:

Note: If you are using Hermes, this will not work. Go to the next workaround.

Please go to Build Settings -> Excluded Architectures -> Debug (or the schema you are using to run on an iOS Simulator) and add arm64 there. See https://stackoverflow.com/questions/63607158/xcode-12-building-for-ios-simulator-but-linking-in-object-file-built-for-ios for more.

If doesn't work:

Do it for both your project and Pods. If your project is named RNTestProject (react-native init RNTestProject), you will have to do it for RNTestProject and Pods. Remember to do it in both places, otherwise, the error will keep happening.

More information on this workaround is available in this StackOverflow issue: https://stackoverflow.com/a/64139830

Please keep in mind that this is workaround and not an official answer to the problem. We will investigate this and publish a recommendation once we have analysed all the pros and cons of each alternative solutions.