问题
XCode Version: Version 7.2 (7C68)
Building for PhoneGAP IOS
Commands used:
xcodebuild -project HelloCordova.xcodeproj -scheme HelloCordova -configuration Release -sdk iphonesimulator IDENTIFIER=com.kony.SyncApp build
It used to work well before upgrading Xcode after upgrading to 7.2 , i am facing this issue. And same wokring form XCODE UI Problem with command line build
Error Info:
fatal error: too many errors emitted, stopping now [-ferror-limit=] 20 errors generated.
** BUILD FAILED **
The following build commands failed:
ProcessPCH /Users/konysync/Library/Developer/Xcode/DerivedData/HelloCordova-gyroiomjvclmgtfewwtckeoypgfd/Build/Intermediates/PrecompiledHeaders/CordovaLib_Prefix-almeazhzuslzcvewimbluxlrnwby/CordovaLib_Prefix.pch.pch CordovaLib_Prefix.pch normal armv7 objective-c com.apple.compilers.llvm.clang.1_0.compiler
ProcessPCH /Users/konysync/Library/Developer/Xcode/DerivedData/HelloCordova-gyroiomjvclmgtfewwtckeoypgfd/Build/Intermediates/PrecompiledHeaders/CordovaLib_Prefix-bvlrmrstkahcccfcihrhcdumeenk/CordovaLib_Prefix.pch.pch CordovaLib_Prefix.pch normal arm64 objective-c com.apple.compilers.llvm.clang.1_0.compiler
(2 failures)
found some links , but those links did not help.
Apple LLVM Compiler 3.1 error clang
Unsupported compiler 'com.apple.compilers.llvm.clang.1_0' selected for architecture 'x86_64' on Xcode 7 Beta 2
回答1:
This is a bug introduced in Xcode 7.2 (and still not fixed as of 7.2.1), see https://openradar.appspot.com/23857648 It seems that xcodebuild is not setting correctly the ARCH and PLATFORM_NAME variables when invoked with -sdk iphonesimulator.
There are two known workarounds at the moment, both involve passing extra flags to xcodebuild:
1) Pass the -destination flag, eg:
xcodebuild [...] -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone 6'
2) Override the PLATFORM variable, eg:
xcodebuild [...] -sdk iphonesimulator PLATFORM_NAME=iphonesimulator
回答2:
i have tried to resolve this error many times and follows multiple steps of every one but not worked for me after that i deleted my build folder from project ios directory like react-native-project>ios>Build folder it worked for me.
来源：https://stackoverflow.com/questions/35125494/xcode-command-line-build-failed-with-com-apple-compilers-llvm-clang-1-0-compiler