error: Multiple commands produce '/Civilsdaily-gjggvnysmawfxocznghsnymtulyq/Build/Products/Debug-iphonesimulator/Civilsdaily.app/SimpleLineIcons.ttf':

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Command line invocation: /Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild -workspace Civilsdaily.xcworkspace -configuration Debug -scheme Civilsdaily -destination id=AE1E65F9-A867-4C6A-8ADA-0604A97ADE7B

note: Using new build system note: Building targets in parallel note: Planning build note: Using build description from disk Build system information error: Multiple commands produce '/Users/mdamil/Library/Developer/Xcode/DerivedData/Civilsdaily-gjggvnysmawfxocznghsnymtulyq/Build/Products/Debug-iphonesimulator/Civilsdaily.app/Zocial.ttf':

  1. Target 'Civilsdaily' (project 'Civilsdaily') has copy command from '/Users/mdamil/project/phone/Civilsdaily/node_modules/react-native-vector-icons/Fonts/Zocial.ttf' to '/Users/mdamil/Library/Developer/Xcode/DerivedData/Civilsdaily-gjggvnysmawfxocznghsnymtulyq/Build/Products/Debug-iphonesimulator/Civilsdaily.app/Zocial.ttf'
  2. That command depends on command in Target 'Civilsdaily' (project 'Civilsdaily'): script phase “[CP] Copy Pods Resources”

Build system information error: Multiple commands produce '/Users/mdamil/Library/Developer/Xcode/DerivedData/Civilsdaily-gjggvnysmawfxocznghsnymtulyq/Build/Products/Debug-iphonesimulator/Civilsdaily.app/SimpleLineIcons.ttf':

  1. Target 'Civilsdaily' (project 'Civilsdaily') has copy command from '/Users/mdamil/project/phone/Civilsdaily/node_modules/react-native-vector-icons/Fonts/SimpleLineIcons.ttf' to '/Users/mdamil/Library/Developer/Xcode/DerivedData/Civilsdaily-gjggvnysmawfxocznghsnymtulyq/Build/Products/Debug-iphonesimulator/Civilsdaily.app/SimpleLineIcons.ttf'
  2. That command depends on command in Target 'Civilsdaily' (project 'Civilsdaily'): script phase “[CP] Copy Pods Resources”

Build system information error: Multiple commands produce '/Users/mdamil/Library/Developer/Xcode/DerivedData/Civilsdaily-gjggvnysmawfxocznghsnymtulyq/Build/Products/Debug-iphonesimulator/Civilsdaily.app/Octicons.ttf':

  1. Target 'Civilsdaily' (project 'Civilsdaily') has copy command from '/Users/mdamil/project/phone/Civilsdaily/node_modules/react-native-vector-icons/Fonts/Octicons.ttf' to '/Users/mdamil/Library/Developer/Xcode/DerivedData/Civilsdaily-gjggvnysmawfxocznghsnymtulyq/Build/Products/Debug-iphonesimulator/Civilsdaily.app/Octicons.ttf'
  2. That command depends on command in Target 'Civilsdaily' (project 'Civilsdaily'): script phase “[CP] Copy Pods Resources”
1 Answers

Essentially, react-native-vector-icons and native-base both bundle the same font files. (And for some reason we also have one of them bundled ourselves; I'll be sure to remove that one.) Before updating to Xcode 10 / Mojave, there was no issue. The only change was to update from Xcode 9 to Xcode 10.

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