I am trying to set up application tests for my iOS application. I am using the following article as the basis of what I am doing:
http://cocoawithlove.com/2009/12/sample-iphone-application-with-complete.html
So I can created the additional targets that I need. I now have 3 targets:
-The original target
-The tests target
-The duplicate target
I have added the original target as a target dependency to my test target. I have then added the test target as a target dependency on my duplicate target.
However, whenever I try to reference any of my classes in my test cases I get:
Undefined symbols for architecture armv7:
"_OBJC_CLASS_$_MyClass", referenced from:
objc-class-ref in MyApplicationTests.o
"_OBJC_CLASS_$_AnotherClass", referenced from:
objc-class-ref in MyApplicationTests.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Is there another location which I need to set up some sort of dependency to tell my Tests target that it is dependant on the original target?
Cheers
So I found the solution to this issue at:
http://twobitlabs.com/2011/06/adding-ocunit-to-an-existing-ios-project-with-xcode-4/
You need to do the following to avoid this issue:
Go back to your app target (not the test target), set the Symbols Hidden by Default build setting to NO
Now there is no need to add any source files to the Compile Source for the test target as long as the original target is set as a dependency.
You have to include the .m file for any of your classes that you reference from your test code in the list of compiled sources for your test target. From the error message you provided, that sounds like your problem. In XCode 4.2 you can add a compile source to a target by selecting your project in the project navigator, then selecting your test target, the Build Phases tab, and expanding the Compile Sources section. Click the "+" below the Compile Sources section and then select your class' .m file.
Related
I downloaded a collection of private libraries from this link. When I click download I get all frameworks. So these are only header files not the .framework files that are available in Xcode. So I linked them by the usual method of going to build phases, in it I go to link binary with libraries click on + and choose the header files from a framework (preferences framework in my case). After these files are added to my project I try to make an object from one of the libraries and try to call their instance methods. When I try to execute this program I get this error. I get this whether I run it on the device or simulator.
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_DevicePINController", referenced from:
objc-class-ref in UAViewController.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1
(use -v to see invocation)
DevicePinController is a part of a private framework preferences.h.I am trying to make an object of it UA
EDIT: I tried using other framework headers such as bluetooth and I get this error in all.
EDIT: I tried adding the entire framework to the project instead of adding individual header files.Now the error is
d: framework not found BluetoothManager
clang: error: linker command failed with exit code 1 (use -v to see invocation)
You'll need to actually build the framework. You can't just link against a header file; that doesn't make sense.
Try adding all the .m files in the Preferences folder as Compile Sources, and remove the header file from Link Binary with Libraries.
Added: I realize now this answer is incorrect. The files OP is trying to use are not a library, but header files from Apple's private frameworks. Here's a related answer: https://stackoverflow.com/a/13388225/893113
I'm getting the following error only when I try to build the unit tests of an iPhone static library:
Undefined symbols for architecture i386:
"std::terminate()", referenced from:
-[ZipArchive dealloc] in libMyProject.a(ZipArchive.o)
"___gxx_personality_v0", referenced from:
Dwarf Exception Unwind Info (__eh_frame) in libMyProject.a(ZipArchive.o)
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Building the original project works fine.
What can I be missing?
It should be noted that ZipArchive is a .mm file that references the libz.dylib framework, which is referenced both in the original project and in the test project.
Additionally, the usual Build Settings suspects have the following values:
Framework Search Paths: "$(SDKROOT)/Developer/Library/Frameworks" "$(DEVELOPER_LIBRARY_DIR)/Frameworks"
Other Linker Flags: -all_load -lxml2 - ObjC
Header Search Paths: /usr/include/libxml2
I found the solution in this post.
For some reason that eludes me, the compiler needed the ZipArchive.mm file to be renamed to .m when the static library is used in another project (the test project, in this case).
This typically occurs for one of two reasons:
You copied a framework or system header directly to your project folder instead of adding it with a reference through XCode
You've installed multiple SDKs, and the wrong framework or header is being referenced. Most frameworks aren't "Developer" frameworks. SenTestingKit.framework is an example of a developer framework, UIKit.framework isn't. Oddly, there are two different places that Developer Frameworks exist. In the /Developers/~ folder in XCode, and also in the SDK Developers folder. The default behavior is to reference the framework in XCode's developer folder. To override this, enter "$(SDKROOT)/Developer/Library/Frameworks" in "Framework Search Paths". Or in the case of an imported header or library, go the corresponding field and add "$(SDKROOT)/..."
Make sure your search paths are the same correct for all Targets:
If you are using multiple SDKs, the wrong version of the Developer Frameworks could get added (like SenTestingKit). Manually enter the the correct one under Framework Search Paths with
$(SDKROOT)/Developer/Library/Frameworks
I am getting InfoViewControlelr.h .m .xib file from other project adding to existing project which I have in Xcode 4 but when I build the project it gives the following error
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_InfoViewController", referenced from:
You have to notify the compiler to compile your InfoViewController that you've added.
You can do this as following.
Please go to Project's TARGET and choose Build Phases tab.
And add your InfoViewController.m to Compile Sources section.
And last you can rebuild your project.
This can be caused by either neglecting to select "add to target" when importing the file, or by a descrepensy between the frameworks you are importing and the frameworks that have actually been imported into the project.
I have added the SystemConfiguration framework. I am deploying against targets from 3.2 and higher. Have I forgotten to add something?
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_Reachability", referenced from:
objc-class-ref in AppDelegate.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Okay, the clues are all in the error report you have posted.
While linking (the message is from the linker ld) which occurs after compilation of all the symbols across your project, the message is saying
"In AppDelegate, you have referenced a class object called Reachability"
"_OBJC_CLASS_$_Reachability"
and as far as the linker is concerned Reachability is undefined.
So, check that Reachability is being compiled in your project. The are a couple of ways to do this. Perhaps the most clear way is to
1 select the project file in the navigation pane
2 select the target
3 select Build Phases
4 Expand the Compile Sources section
*Now check the list of sources that will be compiled for your missing class, in your case Reachability.m
If it is missing, use the + button to add the file to the target.
Another way is to
1 select the file you think is not being compiled
2 open the utilities panel
3 select the file inspector tab
There will be a checkbox for each target in your project and you can easily see if your .m file is being compiled for each/all targets or not.
You might have forgotten to include the Reachability classes in your project!
I had a similar problem when I upgraded to the newest version of Mixpanel. The error read:
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_CTTelephonyNetworkInfo", referenced from:
objc-class-ref in Mixpanel.o
You can follow Damo's solution until the last step, and then instead of expanding the Compile Sources section, you have to expand the Link Binary With Libraries section instead, and add the CoreTelephony.framework source which contains CTTelephonyNetworkInfo.
You can read more about the CTTelephonyNetworkInfo class reference on Apple's official website here: http://developer.apple.com/library/ios/#documentation/NetworkingInternet/Reference/CTTelephonyNetworkInfo/Reference/Reference.html
When I add libiphone-exif.a to snapandrun in objectiveflickr I get this error:
".objc_class_name_EXFJpeg", referenced from:
literal-pointer#__OBJC#__cls_refs#EXFJpeg in SnapAndRunViewController.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
I do not know what this means, I follow the guide to add it, add all of the .h files and the libiphone-exif.a
Is there something special I have to do?
It sounds like you didn't add the library properly. It is a static library, not an Objective C or data file, so simply adding it to the project isn't enough. All that will happen is that it gets copied into the application bundle, when it needs to be statically linked into the executable. You have to open your targets and add the .a file under "Link Binary With Libraries".
I downloaded the source from the svn project from google and drag and drop into my project.
Clicking the target and marking the static lib as "weak" type instead of "required" made no difference.