Unity 3D iOS游戏构建失败Xcode 8.32：“clang错误链接器命令失败，退出代码为1”

Question

Details:

• Unity: 5.6.0f3
• Xcode: Version 8.3.2 (8E2002)
• Build: Virtual Reality iOS Mobile Game (the only thing I changed in build settings was the color profile from gamma to linear...)

I'm a beginner at Unity 3D and want to test build my game on iOS through Xcode. However, I have tried many times and this error consistently pops up.

Apple Mach-O Linker (ld) Error Group clang: error: linker command failed with exit code 1 (use -v to see invocation)

ld: 1446 duplicate symbols for architecture armv7

Ld /Users/Jolly/Library/Developer/Xcode/DerivedData/Unity-iPhone-aqqtjpzyrdxrdefeowhehdcbavdc/Build/Products/Release-iphoneos/test.app/test normal armv7
cd "/Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test"
export IPHONEOS_DEPLOYMENT_TARGET=9.2
export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.3.sdk -L/Users/Jolly/Library/Developer/Xcode/DerivedData/Unity-iPhone-aqqtjpzyrdxrdefeowhehdcbavdc/Build/Products/Release-iphoneos -L/Users/Jolly/Library/Developer/Xcode/DerivedData/Unity-iPhone-aqqtjpzyrdxrdefeowhehdcbavdc/Build/Products/Release-iphoneos/GTMSessionFetcher -L/Users/Jolly/Library/Developer/Xcode/DerivedData/Unity-iPhone-aqqtjpzyrdxrdefeowhehdcbavdc/Build/Products/Release-iphoneos/GoogleToolboxForMac -L/Users/Jolly/Documents/SCHOOL\ STUFF/RMIT/Year\ 2/VR\ story/Builds/0.3\ alpha\ test/Pods/GVRSDK/Libraries -L/Users/Jolly/Documents/SCHOOL\ STUFF/RMIT/Year\ 2/VR\ story/Builds/0.3\ alpha\ test -L/Users/Jolly/Documents/SCHOOL\ STUFF/RMIT/Year\ 2/VR\ story/Builds/0.3\ alpha\ test/Libraries -L/Users/Jolly/Documents/SCHOOL\ STUFF/RMIT/Year\ 2/VR\ story/Builds/0.3\ alpha\ test/Libraries/Plugins/iOS -F/Users/Jolly/Library/Developer/Xcode/DerivedData/Unity-iPhone-aqqtjpzyrdxrdefeowhehdcbavdc/Build/Products/Release-iphoneos -filelist /Users/Jolly/Library/Developer/Xcode/DerivedData/Unity-iPhone-aqqtjpzyrdxrdefeowhehdcbavdc/Build/Intermediates/Unity-iPhone.build/Release-iphoneos/Unity-iPhone.build/Objects-normal/armv7/test.LinkFileList -Xlinker -map -Xlinker /Users/Jolly/Library/Developer/Xcode/DerivedData/Unity-iPhone-aqqtjpzyrdxrdefeowhehdcbavdc/Build/Intermediates/Unity-iPhone.build/Release-iphoneos/Unity-iPhone.build/test-LinkMap-normal-armv7.txt -miphoneos-version-min=9.2 -dead_strip -Xlinker -object_path_lto -Xlinker /Users/Jolly/Library/Developer/Xcode/DerivedData/Unity-iPhone-aqqtjpzyrdxrdefeowhehdcbavdc/Build/Intermediates/Unity-iPhone.build/Release-iphoneos/Unity-iPhone.build/Objects-normal/armv7/test_lto.o -stdlib=libc++ -fobjc-arc -fobjc-link-runtime -ObjC -lGTMSessionFetcher -lGVRSDK -lGoogleToolboxForMac -lc++ -framework AVFoundation -framework AudioToolbox -framework CoreGraphics -framework CoreMedia -framework CoreMotion -framework CoreText -framework CoreVideo -framework GLKit -framework MediaPlayer -framework OpenGLES -framework QuartzCore -framework Security -weak_framework CoreMotion -weak-lSystem -ObjC -framework MediaToolbox -liPhone-lib -framework CoreText -framework AudioToolbox -weak_framework AVFoundation -framework CFNetwork -framework CoreGraphics -framework CoreLocation -framework CoreMedia -weak_framework CoreMotion -framework CoreVideo -framework Foundation -framework MediaPlayer -framework OpenAL -framework OpenGLES -framework QuartzCore -framework SystemConfiguration -framework UIKit -liconv.2 -lgvrunity -weak_framework Metal -weak_framework Security -lPods-Unity-iPhone -framework GLKit -Xlinker -dependency_info -Xlinker /Users/Jolly/Library/Developer/Xcode/DerivedData/Unity-iPhone-aqqtjpzyrdxrdefeowhehdcbavdc/Build/Intermediates/Unity-iPhone.build/Release-iphoneos/Unity-iPhone.build/Objects-normal/armv7/test_dependency_info.dat -o /Users/Jolly/Library/Developer/Xcode/DerivedData/Unity-iPhone-aqqtjpzyrdxrdefeowhehdcbavdc/Build/Products/Release-iphoneos/test.app/test

There's too much to show so I will just show a snippet of the repeating code:

duplicate symbol _OBJC_CLASS_$_GVRAppearanceConfigurationUtils in:
    /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Pods/GVRSDK/Libraries/libGVRSDK.a(GVRAppearanceConfigurationUtils_473839876bdc9859610fc4ebacde705c.o)
    /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Libraries/Plugins/iOS/libgvrunity.a(GVRAppearanceConfigurationUtils_473839876bdc9859610fc4ebacde705c.o)
duplicate symbol _OBJC_METACLASS_$_GVRAppearanceConfigurationUtils in:
    /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Pods/GVRSDK/Libraries/libGVRSDK.a(GVRAppearanceConfigurationUtils_473839876bdc9859610fc4ebacde705c.o)
    /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Libraries/Plugins/iOS/libgvrunity.a(GVRAppearanceConfigurationUtils_473839876bdc9859610fc4ebacde705c.o)
duplicate symbol _OBJC_IVAR_$_GVRAudioEngine._engine in:
    /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Pods/GVRSDK/Libraries/libGVRSDK.a(GVRAudioEngine_91e63440cd39d6269dadebd554789f11.o)
    /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Libraries/Plugins/iOS/libgvrunity.a(GVRAudioEngine_91e63440cd39d6269dadebd554789f11.o)
duplicate symbol _OBJC_CLASS_$_GVRAudioEngine in:
    /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Pods/GVRSDK/Libraries/libGVRSDK.a(GVRAudioEngine_91e63440cd39d6269dadebd554789f11.o)
    /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Libraries/Plugins/iOS/libgvrunity.a(GVRAudioEngine_91e63440cd39d6269dadebd554789f11.o)
duplicate symbol _OBJC_METACLASS_$_GVRAudioEngine in:
    /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Pods/GVRSDK/Libraries/libGVRSDK.a(GVRAudioEngine_91e63440cd39d6269dadebd554789f11.o)
    /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Libraries/Plugins/iOS/libgvrunity.a(GVRAudioEngine_91e63440cd39d6269dadebd554789f11.o)
etc... (1400 more lines)

UPDATE: I deleted "arm64" in Build Setting > Architectures, and the warning stopped appearing, but error still occurs

warning: arm64 function not 4-byte aligned: ltmp0 from /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Libraries/libiPhone-lib.a(unwind_test_arm64.o) ld: warning: arm64 function not 4-byte aligned: _unwind_tester from /Users/Jolly/Documents/SCHOOL STUFF/RMIT/Year 2/VR story/Builds/0.3 alpha test/Libraries/libiPhone-lib.a(unwind_test_arm64.o)

\n

Here are the errors that popped up: screenshot of errors
I don't know what's going on :/ But help is greatly appreciated :D

Answer 1

Kudos to Phillip Mills for finding a link to the solution!

Quoting from the website,

1. Copy the GVROverlayView.h file from Pods/Headers/Public/GVRSDK folder to the top-level Classes folder.Open the main .xcodeproj file.
2. Delete the libPods-Unity-iPhone.a file from the left pane.
3. Under Build Settings, double-click the first line in Other Linker Flags. Screenshot Photo
4. Delete the $(inherited) line.
5. Build the project.
6. Profit.

Credits to: https://github.com/googlevr/gvr-ios-sdk/issues/234

Answer 2

I've also added comment to https://github.com/googlevr/gvr-ios-sdk/issues/234 linked above. I'll duplicate here....

The above described issue is actually a different issue than #259 , resulting from upgrading the GoogleVR unity package, without deleting all references to the old libgvrunity.a.

If libGVRSDK.a and libgvrunity.a are creating a mass of conflicting symbols, you need to reimport the GoogleVRForUnity.unitypackage. But first you need to go through your Assets/Plugins dir and delete any references to GVR, including libgvrunity.a. Unity's package manager does not delete files from previously imported packages that conflict with package updates.