react-native run-ios FAILED

[acntwww]

(Describe your issue in detail.)

Environment

Environment:
OS: OS X El Capitan 10.11.6
Node: 8.1.2
Yarn: Not Found
npm: 4.6.1
Watchman: 4.9.1
Xcode: Xcode 8.2.1 Build version 8C1002
Android Studio: 3.0 AI-171.4443003

Packages: (wanted => installed)
react: 16.3.0-alpha.1 => 16.3.0-alpha.1
react-native: 0.54.0 => 0.54.0

Expected Behavior

Build Success

Actual Behavior

** BUILD FAILED **

The following build commands failed:
CompileC /Users/NKY/Code/Learn/RN/AwesomeProject/ios/build/Build/Intermediates/React.build/Debug-iphonesimulator/React.build/Objects-normal/x86_64/RCTFont.o Views/RCTFont.mm normal x86_64 objective-c++ com.apple.compilers.llvm.clang.1_0.compiler

Steps to Reproduce

1. react-native init AwesomeProject
2. cd AwesomeProject
3. react-native run-ios

Build With XCode

/Users/NKY/Code/Learn/RN/AwesomeProject/node_modules/react-native/React/Views/RCTFont.mm:110:39: Unknown type name 'UIFontWeight'; did you mean 'RCTFontWeight'?

[Kurom96]

same issue.

Env:
OS X El Capitan 10.11.6
Xcode 8.2.1 (8C1002)

[cat-cat]

RN 0.54 requires types available since iOS 11. So you have to upgrade your xcode and set minimum iOS version in your app to 11

[msageryd]

Does this mean that RN 0.54 cannot be used for iOS targets < 11?
According to stats, iOS < 11 is used by approx 26% users.

[gavin-gmlab]

Same issue. I need to support all the way down to iOS 8

[hramos]

+1 to @cat-cat. You can use the iOS 11 SDK and still target runtimes all the way back to iOS 8. Please update to Xcode 9 and ensure you are building your app with the latest SDK, or roll back to a React Native version that was released prior to iOS 11's general availability.

[msolomon]

This means if you're on El Capitan, you'll have to update to High Sierra and install Xcode 9 to use RN 0.54, but you do not have to change the minimum iOS version for your app.

[perry-mitchell]

you'll have to update to High Sierra

@msolomon Sierra is fine - Xcode 9 runs fine there also.

[zxiest]

Alternatively, which react-native version I need to go back to if I do not wish to upgrade?

[haruelrovix]

@zxiest I got the same error using RN latest version. Changed it to 0.48.4 and the BUILD SUCCEEDED.

[msolomon]

I believe anything < 0.54 should work, since I was on 0.53.

[haruelrovix]

@msolomon unfortunately, if still using Xcode 8 (iOS 10.3) as the OP mentioned above, it's still FAILED. RN 0.53.3.