I tried to set conversion tracking in my iOS game, but I didn't be able to do that. The tutorial can be found here: https://developers.google.com/app-conversion-tracking/ios/?hl=it#usage_and_disclosure
I integrate the GoogleConversionTrackingSDK to my project, load AdSupport framework and type -ObjC in Other linker flags.
I tried to convert this snippet from Obj-C:
[ACTConversionReporter reportWithConversionID:#"MY_ID" label:#"MY_LABEL" value:#"MY_VALUE" isRepeatable:NO];
to Swift:
ACTConversionReporter.reportWithConversionID("MY_ID", label: "MY_LABEL", value: "MY_VALUE", isRepeatable: false)
and I put that in didFinishLaunchingWithOptions method of AppDelegate.swift, but I get the error:
Use of unresolved identifier 'ACTConversionReporter'
If I type in Obj-C bridging header in Swift Compiler - Code Generation in Build Settings "ACTReporter.h" (without qm), I put the header file in the folder of my game or if I type the whole path of "ACTReporter.h" ending with its name, I fail the build and I get 2 errors:
Undefined symbols for architecture armv7:
"_OBJC_CLASS_$_ACTConversionReporter", referenced from:
type metadata accessor for __ObjC.ACTConversionReporter in AppDelegate.o
ld: symbol(s) not found for architecture armv7 clang: error: linker
command failed with exit code 1 (use -v to see invocation)
I don't know what to do. I hope there is someone who can fix this.
You need to add to your project "YourProjectName-Bridging-Header.h" file
Here you can see how to add the file
in Bridging Header file add #import "ACTReporter.h"
Then it will work for you!
Related
The app I've been working on uses an external library, pdlib, which has it's own externals (.c files) which I've been importing via the bridging header #import "Uzi.c" and calling in my main Swift file via Uzi.c's setup function Uzi_setup() in my ViewController class. I've had no problem with this until after updating to new public Xcode 8 a few days ago (I had no problem with Xcode 8 Beta 1 over the Summer).
Here are the 7 errors I get, listed under a single "Mach-O Linker Error" umbrella:
Undefined symbols for architecture x86_64:
"_Uzi_bang", referenced from:
_Uzi_setup in ViewController.o
"_Uzi_class", referenced from:
_Uzi_setup in ViewController.o
"_Uzi_float", referenced from:
_Uzi_setup in ViewController.o
"_Uzi_new", referenced from:
_Uzi_setup in ViewController.o
"_Uzi_pause", referenced from:
_Uzi_setup in ViewController.o
"_Uzi_resume", referenced from:
_Uzi_setup in ViewController.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Those undefined symbols are 6 functions and a class declare from Uzi.c. Here's a link to the whole c file: https://github.com/electrickery/pd-miXedSon/blob/master/hammer/Uzi.c
I've tried every solution I've found online for dealing with similar problems, with no solution yet... I tried changing the "Architecture" and "Valid Architecture" settings to only armv7 and armv7s (no arm64) and changed "Build Active Architecture Only" to "No". These step seem to help others in similar situations, but they didn't work for me (and taking away arm64 causes additional errors to appear).
XCode 8 is pretty recent (the public version was released Sept. 13), so there are virtually no other questions about this upgrade causing a similar problem.
Any help would be greatly appreciated!
Solved by #danomatika on GitHub: https://github.com/libpd/libpd/issues/149
"You generally shouldn't include/import an implementation file aka .c, .cpp, .m, etc. This is what is causing the duplicate symbol issue.
This is what the "forward function declaration" in the header file is for: to tell the compiler that a function exists and what data it takes/returns. The compiler then assumes the actual implementation of the function exists in an implementation file. If it can't be found, then you get an "undefined symbol error." If you somehow end up declaring the function twice, aka include both a header with the forward declaration and the implemetaton of the function itself in the .c file, then you get a "duplicate symbol error."
This is all lower-level stuff that is only really an issue since Pd externals are designed around being dynamic libraries, so are not built or provided with headers which include the function declarations. This is why you have to do a little extra work and do it yourself.
Their are two easy fixes for this, both of which involve declaring the required function you want to call from the .c file in a header file.
Simply declare the function in the bridging header:
void uzi_setup();
Create a header, say Externals.h, and declare all of the externals stuff there:
// forward declare setup functions only found in .c implementations
void uzi_setup();
// convenience wrapper function
void externals_setup() {
uzi_setup();
}
Then import the file in your bridging header:
#import "Externals.h"
And in swift, you can now do:
externals_setup()
I'm trying to call a swift singleton from my UITest target. I'm importing the main module: #testable import Ary but when I try to build it says:
Undefined symbols for architecture armv7:
"Ary.DataModelLayerOperation.getter : Ary.DataModelLayer", referenced from:
AryUITests.AryUITests.setUp (AryUITests.AryUITests)() -> () in AryUITests.o
d: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Syntax highlighting works though (the singleton doesn't have access modifiers, so it's marked as internal which should be perfectly fine for access from the test target)...
The function I'm calling is [in an XCTestCase]:
override func setUp() {
super.setUp()
if !DataModelLayerOperation.isUserLoggedIn() {
//do something
}
}
I'm afraid what you want to achieve is not possible at the moment. I have encountered similar problem and asked my question here. I will soon accept the answer that says:
The UI tests are a separate module from the app, therefore not run
inside your app as a logic test would.
I'm hoping this will be improved in the next Xcode versions.
I gone through question already asked on forum. Getting error as below
ld: 8 duplicate symbols for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
More error description is below
ld: warning: directory not found for option '-L/Users/Documents/Sprint1/iPhone/MyApplication/MyApplication/lib/lib'
ld: warning: directory not found for option '-Lrestkit'
ld: warning: ignoring file /Users/Documents/Sprint1/iPhone/MyApplication/MyApplication/lib/lib restkit/libRestKit.a, missing required architecture i386 in file /Users/Documents/Sprint1/iPhone/MyApplication/MyApplication/lib/lib restkit/libRestKit.a (2 slices)
duplicate symbol _OBJC_IVAR_$_Reachability.reachabilityRef in:
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Intermediates/MyApplication.build/Debug-iphonesimulator/MyApplication.build/Objects-normal/i386/Reachability.o
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Products/Debug-iphonesimulator/libPOSNirvanaUtils.a(Reachability.o)
duplicate symbol _kReachabilityChangedNotification in:
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Intermediates/MyApplication.build/Debug-iphonesimulator/MyApplication.build/Objects-normal/i386/Reachability.o
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Products/Debug-iphonesimulator/libPOSNirvanaUtils.a(Reachability.o)
duplicate symbol _kInternetConnection in:
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Intermediates/MyApplication.build/Debug-iphonesimulator/MyApplication.build/Objects-normal/i386/Reachability.o
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Products/Debug-iphonesimulator/libPOSNirvanaUtils.a(Reachability.o)
duplicate symbol _kLocalWiFiConnection in:
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Intermediates/MyApplication.build/Debug-iphonesimulator/MyApplication.build/Objects-normal/i386/Reachability.o
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Products/Debug-iphonesimulator/libPOSNirvanaUtils.a(Reachability.o)
duplicate symbol _OBJC_IVAR_$_Reachability.key_ in:
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Intermediates/MyApplication.build/Debug-iphonesimulator/MyApplication.build/Objects-normal/i386/Reachability.o
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Products/Debug-iphonesimulator/libPOSNirvanaUtils.a(Reachability.o)
duplicate symbol _OBJC_CLASS_$_Reachability in:
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Intermediates/MyApplication.build/Debug-iphonesimulator/MyApplication.build/Objects-normal/i386/Reachability.o
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Products/Debug-iphonesimulator/libPOSNirvanaUtils.a(Reachability.o)
duplicate symbol _OBJC_METACLASS_$_Reachability in:
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Intermediates/MyApplication.build/Debug-iphonesimulator/MyApplication.build/Objects-normal/i386/Reachability.o
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Products/Debug-iphonesimulator/libPOSNirvanaUtils.a(Reachability.o)
duplicate symbol _kConnectionDown in:
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Intermediates/MyApplication.build/Debug-iphonesimulator/MyApplication.build/Objects-normal/i386/Reachability.o
/Users/Library/Developer/Xcode/DerivedData/MyApplication-bchgbqjzuwjzbcbnhwyihhatsoyw/Build/Products/Debug-iphonesimulator/libPOSNirvanaUtils.a(Reachability.o)
ld: 8 duplicate symbols for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I have project structure like
Application
Static library A
Static library B
Situation
1) Static library A depend on static library B. The project A require Reachability check.
2) Added static library A into Application project
3) When I compile,getting linker error
Please help to resolve this issue.
If this solution is not working then check this..
Another reason this error often happens is accidentally importing the .m file instead of the .h.
Steps:
1.Check Build phases in Target settings.
2.Check if any file exists twice or once.
3.If file exist twice delete one. If not delete file in the bottom which is the latest one.
4.Build again.
You have Reachability class in libPOSNirvanaUtils.a & your Application and you are using libPOSNirvanaUtils.a in your application. So now your application has 2 reference of Reachability class.
If you are building libPOSNirvanaUtils.a then you can solve this with 2 ways:
Remove Reachability class membership from target libPOSNirvanaUtils.a
Add Reachability class in Copy files, remove Reachability class reference from your Application and use same class reference from libPOSNirvanaUtils.
I had the same problem while using prepareforsegue delegate. It turns out, I accidentally imported the .m file instead of the .h file. This will fix it. Look at your #import statements before you go crazy adding and deleting frameworks.
In my case I got this error because had the same named variables declared in several files in implementation part.
#implementation A
int a;
...
#implementation B
int a;
...
gave me "duplicate symbol _a ..."
I am getting an error that this block, which I defined in a header file, has 78 duplicate symbols. I have tried putting it in the precompiled header file but I still get the same results.
This is the error: ld: 34 duplicate symbols for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
It's possible that there are some circular imports, but I can't really change a lot unless anyone has a way to forward define a typedef enum (which I have used all throguhout the project) - something like #class but for typedef.
Can anyone please help?
Undefined symbols for architecture armv7:
"_OBJC_CLASS_$_SSZipArchive", referenced from: objc-class-ref in
LoginVC.o ld: symbol(s) not found for architecture armv7 clang: error:
linker command failed with exit code 1 (use -v to see invocation)
just solved! I really tried everything, but yeah, it has catched me too now -> CMD+alt+Return, I only have to clean it, and now it works.
Be careful, if you have same problems with SSZipArchive check this:
- check the prefix.pch: You added some objective-C classes here? -->so just move it into
#ifdef __OBJC__
#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>
#endif
...cause minizip is compiling together with objective-classes, and thats a problem for minizip, so move it into #ifdef to work clear.
- clean baby: Just clean like me your project, if you tried many mistakes before [CMD]+[alt]+return - be careful
- add SSZipArchive not as reference: Just create your SSZipArchive to first like:
SSZipArchive
SSZipArchive.h
SSZipArchive.m
minizip(folder)
..just look also thisNiceLink..but it can work anyway as referenced folder, look here..both don't worked for me (cause I don't cleaned after experiments ;))..I have created a folder construct like above on finder, and drag drop it into my project (just click "create groups")
..so I hope it helps you.. :)