I was trying out google maps sdk integration with iOS 6.1. I am successfully able to populate gmap on iOS simulator by using instructions given on
GMaps for iOS starting guide
Then what the issue with it:
It works great when I use it as a separate project. But when I club the above project code with my existing application, then it behaves weird, and all the errors generates due to inclusion of -ObjC value in Other Linker Flags in Build Settings.
Error
duplicate symbols for architecture i386
When I skip step 7 (GMaps iOS), it doesn't give errors. Due to exclusion of -ObjC value, it doesn't able to identify a specific GMaps library class and its method:
[GMSCameraPosition cameraWithLatitude:longitude:zoom:]: unrecognized selector sent
My iOS application background:
Using a third party library SUP (Sybase Unwired Platform). Connecting SAP to iOS application. I guess there is something ambiguous with SUP environment enablement (Build settings) when I am trying to add GMaps library.
Seeking for your advices.
Thanks!
There many posts on SO about the duplicate symbols for architecture i386 error. Usually it means that you defined the same symbol twice in the one namespace. The last time I got this error was because I accidentally included a .m file instead of .h header file.
Have you checked the Build Architecture?
Try setting Build Active Architecture Only to Yes.
I was facing the same issue Today! -ObjC linker flag - When trying to add it to "Other Linker Flags" I get an error
I solved my problem, Here is what I'd suggest. Take your original project (without Gmaps and with SUP) and add the -ObjC flag to it. Are you still getting an error? If so, take Gmaps out of the equation. If you are still getting an error check in the warnings about which files it is warning you about. My problem was that I had two files libGoogleAnalytics.a and libGoogleAnalytics_debug.a and for some reason they could not coexist with the -ObjC.
Long story short, you need to find what libraries Gmaps is using that you already have in your project and remove one of them.
Please try this…
step 1: Add '-ObjC' to other linker flags in 'Build Settings' of your 'target' only not to the 'project'
Related
I recently encountered this error when trying to implement Facebook Login using Parse SDK and Facebook SDK.
I took the following steps:
Imported the following frameworks
Listed them under bridging header
I get the following errors after I built my project.
Solutions that I attempted:
-Removing the -ObjC from "Other Linkers" and adding $(inherited)
-Changing Architecture to "STANDARD"
-Selecting libz.1.2.5.dylib build and run
I'm not sure what I'm doing wrong.
UPDATE:
Here's my command line as requested.
Its about your link order. LoginKit needs symbols from CoreKit but cant find them due to your wrong link order. Thats why you get the Undefined symbols error message.
Solution:
Reverse your link order.
Go to your target in Xcode -> Build phases -> Link binary with libraries
and then drag those two libraries around. :)
I have imported a new version of a framework in my SDK. Anyway, I am not able to build on iPhone 6 running iOS 9.0.1 because of the following error that's driving me crazy:
duplicate symbol _IPDJobStatus in:
/Users/akiki/Desktop/iOS 9 Test/MPSDK/iPD.framework/iPD(IPDDevice.o)
/Users/akiki/Desktop/iOS 9 Test/MPSDK/iPD.framework/iPD(IPDAdministration.o)
ld: 5 duplicate symbols for architecture arm7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
This is happening for the same symbol _IPDJobStatus being found twice in 5 files. The same is happening on iPhone 4S running iOS 9.1 with arm64 architecture. To import the framework, I deleted the old one from the project, imported the new one and check into the Link Binary with Library section wether the framework reference links to the correct updated file. Before asking I have tried to perform the following actions:
I searched for the duplicate symbol inside the project scope with no result.
I'm not importing a .m file by accident.
The Compile Sources of the Build Phases project settings doesn't include any duplicate file.
The framework headers references in Headers of the Build Phases project settings link to the proper files.
I tried to clean the project, empty the Derived Data folder, quit and relaunch Xcode.
I added the -ObjC linker flag (in this case the duplicate symbols goes from five to only one).
I switched the No Common Blocks compiler setting to NO, though it has the same error with or without it.
I created a new empty project and imported the framework there. In this case I was able to build, so the problem must resides in my SDK.
Could someone please give me some help?
You can check your project directory may be there available framework. If available then delete it.
I was able to solve the same problem with the following code.
Add this to the Library Search Paths in Build Settings and make sure you select recursive, delete other library paths which might be absolute paths.
$(PROJECT_DIR)
May be it will help you.
You can not make constant type variables of same name & type in two or more classes.
_IPDJobStatus is this constant type variable?
change it to some other name for different classes.
Here you can see the same issue
It means in you project multiple copy of same View Controller instance (i,e means duplicate).
Possible observation:
This IPDJobStatus variable contains in the class IPDDevice or IPDAdministration of the framework is duplicate. Please check this.
Note: You should not have/create a class which already have in any other framework either Xcode's default or 3rd party framework.
For example: UIkit framework have class name "UIApplication" (i.e UIApplication.h, and UIApplication.m). So, if you create you class name "UIApplication". this error will occur. Same case for also 3rd party framework.
Having problems with the Soundcloud API.
I'm getting multiple Warnings & issues and I don't know what can I do to fix that.
Have I to change header search paths & other link flags? I tried the Terminal version of Installation as well and I got warnings & compilation errors
Appreciate your helping, I'm stuck trying to run propertly the Soundcloud API without warnings and I'm not able to do that.
I attach some screenshots.
Thanks
This looks a lot like a duplicate of XCode - iOS: Can't resolve conflict between CocoaLibSpotify and Parse framework.
I'm making a guess here, but are you doing -all_load?
Remove -ObjC and -all_load
Add -force_load <SoundCloudAPI library path> to load only libSoundCloudAPI.
After reading the github page, you may not need -force_load at all.
You may also need to adjust your warning level because of all the deprecated APIs.
It's working!!! Thanks for your help!! I'm very happy :D I was forcing the loading of the libraries without the prefix libPods that is added installing the project through CocoaPods. The trick to hidden the Deprecated functions was really helpful. After one day trying different settings, its running.
These are the linker flags I put in "Other Linker Flags"
-force_load $(BUILT_PRODUCTS_DIR)/libPods-OHAttributedLabel.a
-force_load $(BUILT_PRODUCTS_DIR)/libPods-CocoaSoundCloudUI.a
-force_load $(BUILT_PRODUCTS_DIR)/libPods-CocoaSoundCloudAPI.a
-force_load $(BUILT_PRODUCTS_DIR)/libPods-NXOAuth2Client.a
In "Header Search Paths" I put "./**"
I've been trying to integrate Sharekit to a project that already has google analytics.
I followed the installation guide on the sharekit git wiki which told me to include the 'other linker flags' "-ObjC" and "-all_load"
However when I try compiling I am getting duplicate symbol errors in google analytics, such as:
duplicate symbol _OBJC_IVAR_$_OAServiceTicket.data in:
/Users/x3ro/Library/Developer/Xcode/DerivedData/APPNAME-bgfudbwainndvsdmvtafsrwfryvz/Build/Intermediates/APPNAME.build/Debug-iphonesimulator/APPNAME.build/Objects-normal/i386/OAServiceTicket.o
/Users/x3ro/APPNAME/Developer/Xcode/DerivedData/APPNAME-bgfudbwainndvsdmvtafsrwfryvz/Build/Products/Debug-iphonesimulator/libShareKit.a(OAServiceTicket.o)
Removing the flags solves these errors, however I know this isn't a good idea and I'll very likely run into issues down the line. Any help in getting the flags and both libraries to work together would be really appreciated.
Use the linker flag "-force_load" with the path to Sharekit.
It look like something like this:
-force_load $(BUILT_PRODUCTS_DIR)/libRestKit.a
From Apple Documentation:
-all_load forces the linker to load all object files from every archive it sees, even those without Objective-C code. -force_load is available in Xcode 3.2 and later. It allows finer grain control of archive loading. Each -force_load option must be followed by a path to an archive, and every object file in that archive will be loaded.
You can find others answers with this related post:
Using the force_load linker flag with RestKit (iOS)
I'm adding adMob provide by google to my iOS app and I'm stuck on this part of the installation:
Add -all_load under Other Linker Flags in the project build info
If I add that flag, then another third party library breaks giving me the error message:
ld: duplicate symbol _vw_chartype_table_p in /Users/josh/ Projects/app/libs/libvt_universal.a(vw_ctype-3279EF26D0C25F3A.o) and / Users/josh/Projects/app/libs/ libvt_universal.a(vw_ctype-34AB9EC0B46D954C.o) for architecture i386
Is there any way to use the adMob library without using -all_load? For example, I've tried -force_load $(SOURCE_ROOT)/adMob/libGoogleAdMobAds.a
but
ld: file not found: /Users/USERNAME/Desktop/latest/bbbb/APPNAME/adMob/libGoogleAdMobAds.a
The reason Google suggests using -all_load is that they are using categories in their code, and Objective-C libraries with categories are not properly loaded by the llvm linker (well that was the case in 4.3 xcode, not sure about 4.4 with the newer clang).
So, I guess if you are brave you can try to just remove the all_load flag. It should build fine. If the bug is NOT fixed, what will happen is when you run your code, it will crash, since none of the categories the library uses will have been loaded. This might be a good thing to do in any case, as your project should build, and if it does not you can fix those problems first.
What I do suggest you do is use -force_load, which has llvm load the categories in the adMob library (among other things). To use it you MUST have a fully qualified path (ie starts at '/') to the library. Obviously if you use Terminal and run:
ls -l /Users/USERNAME/Desktop/latest/bbbb/APPNAME/adMob/libGoogleAdMobAds.a
its going to fail. So enter the proper path - hard coded - for now to just see if you can get the project to first build, then run. If it does you can later figure out what is the appropriate $(VAR) to use to find it inside your project.