iOS-Hierarchy-Viewer build failed : linker command failed with exit code 1



I find a project called "iOS-Hierarchy-Viewer" that can inspect the ios native Views.
so I create a project called "ViewViewer" and do as the workaround of the "Installation" just README.md describles.
however, when I build it, and failed.


error:


Ld /Users/hundsun/Library/Developer/Xcode/DerivedData/iphone-gsuyenresnoeexcuqguzciigntxr/Build/Products/Debug-iphonesimulator/ViewViewer.app/ViewViewer normal i386
cd /Users/hundsun/Documents/projects/ViewViewer
setenv MACOSX_DEPLOYMENT_TARGET 10.6
......
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_NSAttributeDescription", referenced from:

Related to : iOS-Hierarchy-Viewer build failed : linker command failed with exit code 1
iOS-Hierarchy-Viewer build failed : linker command failed with exit code 1
Operating Systems

I find a project called "iOS-Hierarchy-Viewer" that can inspect the ios native Views.
so I create a project called "ViewViewer" and do as the workaround of the "Installation" just README.md describles.
however, when I build it, and failed.


error:


Ld /Users/hundsun/Library/Developer/Xcode/DerivedData/iphone-gsuyenresnoeexcuqguzciigntxr/Build/Products/Debug-iphonesimulator/ViewViewer.app/ViewViewer normal i386
cd /Users/hundsun/Documents/projects/ViewViewer
setenv MACOSX_DEPLOYMENT_TARGET 10.6
......
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_NSAttributeDescription", referenced from:

linker command failed with exit code 1 - iOS
Operating Systems

I have an error at compile time. Seems to be weird. it worked as detail view application but using single view doesn't seem to work.
this is the error details


Undefined symbols for architecture i386:
"_OBJC_CLASS_$_RssArticle", referenced from:
objc-class-ref in RssXmlParser.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Failed to deploy an application into device like iPad-Linker command failed with Exit code 1
Operating Systems

I am a beginner in native application.I am developing applications using Objective C as front end , SUP as middleware and SAP as backend.I have a valid provisioning certificate with a valid bundle identifier.I tried deploying one of my simple applications into the device(iPAD) which is not having any connection to the backend,and only having some basic navigations from one screen to another.And it has been successfully deployed.


But my problem is when I am deploying my application which is having connection to the middleware and using SUP libraries,it is showing build failed 'Linker command failed with Exit code 1'.I think it is because of the use of Libraries from SUP

Apple Mach-O Linker Error (linker command failed with exit code 1)
Operating Systems

When attempting to run my test class i get the following error


Undefined symbols for architecture i386:
"_OBJC_CLASS_$_Client", referenced from:
objc-class-ref in eFit2Tests.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)


"_OBJC_CLASS_$_Client", referenced from:
objc-class-ref in eFit2Tests.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)


Here is the method declaration for the constructor which is giving the error

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Xcode 6 build Error: Linker command failed with exit code 1(use -v to see invocation)
Operating Systems

I am getting below error when i build a project so kindly help me please.

clang: error: linker command failed with exit code 1 (use -v to see invocation) in Xcode 6

ld: warning: directory not found for option '-L/Users/vasanthmani/Documents/iphone/m-banking/trunk/MBanking/Images/Downloads/keishi-wikihow-iphone-app-37bd0f1/Classes/Libraries/FlurryLib' ld: warning: path '/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator8.1.sdk/usr/lib/libxml2.dylib' following -F not a directory ld: -pie can only be used when targeting iOS 4.2 or later clang: error: linker command failed with exit code 1 (use -v to see invocation)


ios/objective-C: error: linker command failed with exit code 1 (use -v to see invocation)
Operating Systems

For a slow-loading VC, I decided to delete all the excess code that was commented out. Before doing this I copied all the code from the class into TextEdit and saved it to my desktop. Then I began cutting out extraneous code but because there was a mixture of // and /* */ in the course of cutting it out I accidentally deleted a closing brace causing the entire remainder of the code to turn green.

Because I couldn't immediately figure out what I had cut correctly and whether I cut too much, I decided to copy the entire contents from the backed up textEdit file and replace the original code in the class--or so I thought. However, since doing that the App will no longer run as it gives the following error:

Ld
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Products/Debug-iphoneos/idaru.app/idaru
normal armv7
    cd /Users/M/Desktop/War/idaru
    export IPHONEOS_DEPLOYMENT_TARGET=7.1
    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 armv7 -isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.1.sdk
-L/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Products/Debug-iphoneos
-F/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Products/Debug-iphoneos
-filelist
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/idaru.LinkFileList
-Xlinker -rpath -Xlinker @executable_path/Frameworks -dead_strip
-fobjc-arc -fobjc-link-runtime -miphoneos-version-min=7.1 -framework
MessageUI -framework SystemConfiguration -framework CoreLocation
-framework MapKit -framework Social -framework AddressBook -framework
Accounts -framework CoreGraphics -framework QuartzCore -framework
CoreData -Xlinker -dependency_info -Xlinker
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/idaru_dependency_info.dat
-o
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Products/Debug-iphoneos/idaru.app/idaru

duplicate symbol _OBJC_IVAR_$_SettingsVC._reportProblemRow in:
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/SettingsVC.o
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/IDSettings.o
duplicate symbol _OBJC_IVAR_$_SettingsVC._profilePic in:
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/SettingsVC.o
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/IDSettings.o
duplicate symbol _OBJC_IVAR_$_SettingsVC._pushNotification in:
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/SettingsVC.o
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/IDSettings.o
duplicate symbol _OBJC_IVAR_$_SettingsVC._emailNotification in:
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/SettingsVC.o
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/IDSettings.o
duplicate symbol _OBJC_IVAR_$_SettingsVC._pushChanged in:
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/SettingsVC.o
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/IDSettings.o
duplicate symbol _OBJC_IVAR_$_SettingsVC._emailNotificationChanged in:
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/SettingsVC.o
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/IDSettings.o
duplicate symbol _OBJC_IVAR_$_SettingsVC._demo in:
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/SettingsVC.o
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/IDSettings.o
duplicate symbol _OBJC_IVAR_$_SettingsVC._managedObjectContext in:
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/SettingsVC.o
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/IDSettings.o
duplicate symbol _OBJC_CLASS_$_SettingsVC in:
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/SettingsVC.o
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/IDSettings.o
duplicate symbol _OBJC_METACLASS_$_SettingsVC in:
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/SettingsVC.o
   
/Users/M/Library/Developer/Xcode/DerivedData/idaru-bwkkgfbrgtgsmffxqcifyjsoehdq/Build/Intermediates/idaru.build/Debug-iphoneos/idaru.build/Objects-normal/armv7/IDSettings.o
ld: 10 duplicate symbols for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see
invocation)

This is new to me and I can't figure out what to do. The name of the file that I copied from textEdit was SettingsVC. There is also another file in the project called IDSettings that does something different, however, I did not do anything to that.

There are no red image files in the navigator pane. However, the xctest file is in red although I've read this is not unusual.

Would appreciate any advice on how to fix this problem.



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