error message: Linker command failed with exit code 1 [duplicate] - ios

This question already has answers here:
ld: file not found: linker command failed with exit code 1
(11 answers)
Closed 5 years ago.
I KNOW what this error message
"Linker command failed with exit code 1 (use -v to see invocation"
means. I have duplicate symbols.
What I DON'T know is what "use - v to see invocation" means.
How do I actually use -v? In Terminal or where? Please someone, give me an example of its actual use.

Thanks for your help.
I found a way to get the error info: Control-click on the red error indicator (at left), then select Show Error Log, which gives the complete information.
(Meanwhile the "Use -v" message remains useless.)

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Xcode 9 code sign error code 1 [duplicate]

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Command /usr/bin/codesign failed with exit code 1
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Error for ios app: Command /usr/bin/codesign failed with exit code 1
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I have tried cleaning my build folder, deleting the provisioning and certificates for the app, deleting derived data, and manually managing signing yet no matter what I do, I cannot get the build to archive. I get one erorr in xcode:
/Users/jscotto/Library/Developer/Xcode/DerivedData/ionic-deep-links-cdaztiimhbiwroaimkxbkdasbvpy/Build/Products/Debug-iphoneos/ionic-deep-links.app: unknown error -1=ffffffffffffffff
Command /usr/bin/codesign failed with exit code 1
I have no clue what could be causing this.

Errors after Updating Android Studio 3.0 [duplicate]

This question already has answers here:
Error:com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
(49 answers)
Closed 4 years ago.
I just Updated Android studio to 3.0 and there some errors :
Error:failed linking file resources.
Information:Gradle tasks [:app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:mockableAndroidJar]
Error:'' is incompatible with attribute android:background (attr) reference|color.
Error:error: '' is incompatible with attribute android:background (attr) reference|color.
C:\Users\orshk\OneDrive\MyButton2\MyButton2\app\src\main\res\layout\activity_main.xml
Error:java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Error:java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Error:Execution failed for task ':app:processDebugResources'.
Failed to execute aapt
Error:com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Information:BUILD FAILED in 3s
Information:7 errors
Information:0 warnings
Information:See complete output in console
Thank you!
As it is quite obvious you have provided a "" value of android:background attribute at some place inside activity_main.xml. Look for it and give it the appropriate value.

how to solve the error of linker command failed with exit code 1 (use -v to see invocation)

I got one error when I run my app. The error is linker command failed with exit code 1 (use -v to see invocation).
The error shows me that there are 2 duplicate symbols for architecture x86_64.
I could not find a solution. How can I fix this?
Please help me for this issue.
It looks to me as if you have both 2.0 and 3.0 AFNetworking in your project. I don't see AFURLConnectionOperation in the 3.0 source but your link log shows it in conflict with AFURLRequestSerialization, which is in 3.0.
In fact, the github migration guide says:
The following classes have been removed from AFNetworking 3.0:
AFURLConnectionOperation
AFHTTPRequestOperation
AFHTTPRequestOperationManager

Not found an file de MOIP on Objective C

I just develop MOIP with ready-made components, but received the error after running.
Showed an error message:
"ld: file not found: /Users/teste/Library/Developer/Xcode/DerivedData/Moip_Store-fakuiehavrpkaeggjvvtbovybkyh/Build/Products/Debug-iphoneos/Moip Store.app/Moip Store
clang: error: linker command failed with exit code 1 (use -v to see invocation)"
site: https://github.com/moip/ios-sdk-sample
Someone solve this problem?
how?
Select your Project and choose your "Moip Store Test" - Target, go to "General" and set your Application as Host Application.

Swift compiler error on Xcode 6

I have problems with Swift Compiler:
I created new project for iOs on latest Xcode 6 and tried to build - recieved 2 errors with ViewController.swift and AppDelegate.swift.
<unknown>:0: error: unable to execute command: Segmentation fault: 11
<unknown>:0: error: swift frontend command failed due to signal (use -v to see invocation)
<unknown>:0: error: unable to execute command: Bus error: 10
<unknown>:0: error: swift frontend command failed due to signal (use -v to see invocation)
I can post a full logs if if it is necessary.
What should i do? Thanks.
I have faced a similar issue while working with a swift project. I found this on Apple Support Website. It says that this type of error occurs when you tried to access an non-existent/inaccessible memory address. To solve the issue you can quit unused applications or even restart the mac which will probably help you.

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