Linker command failed error when using Tonymillion Rechability class

Question

I am getting this linked error in tonymillion Reachability class. I am using this to get the internet connection in my ios app. Anyone tell me why is this error coming.

Ld /Users/Mathaly/Library/Developer/Xcode/DerivedData/ResQ-bkakeqfqsmrivngctueeyzttnpno/Build/Products/Debug-iphoneos/ResQ-mobile.app/ResQ-mobile normal arm64

cd /Users/Mathaly/Desktop/Gunjan/Business/LogicRoots/Game/Mathaly2/proj.ios_mac

export IPHONEOS_DEPLOYMENT_TARGET=6.0

export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.4.sdk -L/Users/Mathaly/Library/Developer/Xcode/DerivedData/ResQ-bkakeqfqsmrivngctueeyzttnpno/Build/Products/Debug-iphoneos -F/Users/Mathaly/Library/Developer/Xcode/DerivedData/ResQ-bkakeqfqsmrivngctueeyzttnpno/Build/Products/Debug-iphoneos -filelist /Users/Mathaly/Library/Developer/Xcode/DerivedData/ResQ-bkakeqfqsmrivngctueeyzttnpno/Build/Intermediates/ResQ.build/Debug-iphoneos/ResQ.build/Objects-normal/arm64/ResQ-mobile.LinkFileList -dead_strip -stdlib=libc++ -fobjc-link-runtime -miphoneos-version-min=6.0 -liconv -framework Security /Users/Mathaly/Library/Developer/Xcode/DerivedData/ResQ-bkakeqfqsmrivngctueeyzttnpno/Build/Products/Debug-iphoneos/libcocos2d\ iOS.a -framework CoreMotion -framework Foundation -framework UIKit -framework CoreGraphics -framework OpenGLES -lz -framework QuartzCore -framework OpenAL -framework AVFoundation -framework AudioToolbox -Xlinker -dependency_info -Xlinker /Users/Mathaly/Library/Developer/Xcode/DerivedData/ResQ-bkakeqfqsmrivngctueeyzttnpno/Build/Intermediates/ResQ.build/Debug-iphoneos/ResQ.build/Objects-normal/arm64/ResQ-mobile_dependency_info.dat -o /Users/Mathaly/Library/Developer/Xcode/DerivedData/ResQ-bkakeqfqsmrivngctueeyzttnpno/Build/Products/Debug-iphoneos/ResQ-mobile.app/ResQ-mobile

Undefined symbols for architecture arm64:

  "_SCNetworkReachabilityGetFlags", referenced from:
      -[Reachability isReachable] in Reachability.o
      -[Reachability isReachableViaWWAN] in Reachability.o
      -[Reachability isReachableViaWiFi] in Reachability.o
      -[Reachability connectionRequired] in Reachability.o
      -[Reachability isConnectionOnDemand] in Reachability.o
      -[Reachability isInterventionRequired] in Reachability.o
      -[Reachability reachabilityFlags] in Reachability.o
      ...

  "_SCNetworkReachabilitySetDispatchQueue", referenced from:
      -[Reachability startNotifier] in Reachability.o
      -[Reachability stopNotifier] in Reachability.o

  "_SCNetworkReachabilitySetCallback", referenced from:
      -[Reachability startNotifier] in Reachability.o
      -[Reachability stopNotifier] in Reachability.o

  "_SCNetworkReachabilityCreateWithAddress", referenced from:
      +[Reachability reachabilityWithAddress:] in Reachability.o

  "_SCNetworkReachabilityCreateWithName", referenced from:
      +[Reachability reachabilityWithHostname:] in Reachability.o

ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

see this link it helps you http://stackoverflow.com/questions/22323039/arm64-architecture-in-xcode-5-1 — Anbu.Karthik, Nov 17 '15 at 14:49
This is the latest code I have downloaded and someone mentioned that app might not get accepted if we remove arm64. — Gunjan, Nov 17 '15 at 15:00
@Anbu.Karthik I am not seeing any other option in the architecture. Can you tell me how to set that. — Gunjan, Nov 17 '15 at 15:25
I solved it it was no where mention to add SystemConfiguration Framework. Although I included the SystemConfiguration.h, but that was not giving error. After adding it got solved. — Gunjan, Nov 21 '15 at 10:38

score 0 · Accepted Answer · answered Nov 22 '15 at 06:32

Adding SystemConfiguration Framework and changing Deployment Target to IOS 6.0 solved the problem for me.

1) To add SystemConfiguration Framework: Select your project and then select your target (mobile/tablet), then select Build Phases

There is block named Link Binary with Libraries, at the end of it there is + sign click on that. It will open a dialog box search for systemconfiguration in that and then click ok/add.

2) To change Deployment Target: Select your project and then select your target (mobile/tablet), then select Build settings.

There is block of deployment and then IOS Deployment Target, change it IOS 6.0 or above.

Hope this will be helpful

Linker command failed error when using Tonymillion Rechability class

1 Answers1