Linker command failed with exit code 1 use v to see invocation что значит

linker command failed with exit code 1 (use -v to see invocation) in Swift

I used Swift language in my IOS application project in Xcode6 Beta6 and then I had to work on it with another computer. Then I got this error:

«clang: error: linker command failed with exit code 1 (use -v to see invocation)»

This error is shown only different computers than the computer on which I opened my project at first. It does not give an error in the first computer (which I opened and started to the project)

I tried to clean, and delete the contents of DerivedData folder, but it gives me the same error again. Below this error, it also says that «file not found:» for inside of the DerivedData folder:

file not found: /Users/macbook/Library/Developer/Xcode/DerivedData/SihirliSayilar-gmmsqkhqgygosqeuqdiibnrjasbq/Build/Products/Debug-iphonesimulator/Project.app/Project

I looked the other titles for this issue, but none of them solve this problem. Thank you for any help!

11 Answers 11

The fact that it’s a linker error should point you into the right direction. Compilation errors usually mean an error in your syntax. Linker error means that although your source files have been compiled correctly, but when the time comes to be linked with other frameworks (system frameworks, or 3rd party ones), clang cannot find them in place.

Usually, this is because a 3rd party library is missing from your system, and your project depends on it, and although it can find the header files, it cannot find the actual library file to connect to. The fact that transferring your project to other computers is giving you problems, while at your computer compiles and links correctly also strengthens the assumption that probably it’s a problem with the environment you are trying to compile with and you need to install something.

To find out more about the issue, go into Xcode, go into the report navigator, and you will see logs of all the builds you have made. Check the first one (which is the last build). Scroll to the bottom, and see exactly why it didn’t compile. The most common scenario is that some symbol could not be found. Check in which library this symbol belongs, then install this library to your system.

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Linker command failed with exit code 1 (use -v to see invocation) #297

Comments

edward-at-intelex commented Mar 3, 2016

Hello — I searched the issues here as well as in stackOverflow, but cannot seem to find a resolution to this problem.

I followed the manual instructions — https://github.com/mapbox/react-native-mapbox-gl/blob/master/ios/install.md — to install react-native-mapbox-gl for iOS, installing manually onto my Macbook Pro and I am using_ xCode 7.2.x_ .

I am getting an error in xCode and the project fails to build with the following error :

xCode is executing the following command:

general details —
*running react-native 0.2x (latest)
*used node 4.x stable to install react-native-mapbox-gl via npm
*Also changed the deployment target from iOS 7.x to 8.x and 9.x in xCode and still get the same results.

initial thought — do I have to add some file or folder to path? let me know.

Any help is appreciated. thanks — Edward

The text was updated successfully, but these errors were encountered:

bsudekum commented Mar 6, 2016

Any chance you could post a screenshot of your Xcode setup? Can you verify you added the Mapbox framework in the embedded framework section?

edward-at-intelex commented Mar 7, 2016

@bsudekum thanks for responding. I will post a screenshot of xCode setup in a moment but yes I embedded the Mapbox framework in the embedded framework settings under the General Tab for my project.

In the meantime, I thought I would follow up with the following:

1. looks like the process for creating Android version works (I was able to implement the example)
2. I also attempted the cocoapods install. Got a similar linker error —

ld: library not found for -lPods- clang: error: linker command failed with exit code 1 (use -v to see invocation)

(even going further as to add the additional references to my podfile as you described further on in the iOS instructions and updating the node_modules references appropriately, this executed with no errors)
`
source ‘https://github.com/CocoaPods/Specs.git’

xcodeproj ‘projectName’
workspace ‘projectName’

pod ‘RCTMapboxGL’, :path => ‘../node_modules/react-native-mapbox-gl/ios’
pod ‘React’, :path => ‘../node_modules/react-native’
pod ‘React/RCTGeolocation’, :path => ‘../node_modules/react-native’
pod ‘React/RCTImage’, :path => ‘../node_modules/react-native’
pod ‘React/RCTNetwork’, :path => ‘../node_modules/react-native’
pod ‘React/RCTText’, :path => ‘../node_modules/react-native’
pod ‘React/RCTWebSocket’, :path => ‘../node_modules/react-native’
`

So having tried both methods on two mac machines I am currently stuck.

edward-at-intelex commented Mar 7, 2016

Here is the general order of steps I performed in image form as per your request @bsudekum

1. install at command prompt
   
2. add to project
   
3. embed in general tab
   
4. add run script in build phase
   
5. add framework/library
   
6. result of adding framework/library
   

I then implemented the example and built the project in Xcode.

edward-at-intelex commented Mar 7, 2016

Here was the result (from one of a number of multiple tests) @bsudekum .

specs:
*xCode 7.2.1
*simulator was set up as iphone5 / iOS 8.1,9.1,9.2 or iPhone 6s iOS 8.1,9.1,9.2
*fresh install for examples: npm / nvm, node 4.x, react-native 0.20 (they have since upgraded to 0.21)
*I am the admin of my machine with root access (if required)

I also ran the setup against cocoa pods (latest version) and had the native version of Ruby for OSX (I think 2.x) then upgraded to the latest version for OSX.

_notes: in a test I performed today (March 7th, over a week later) I was able to get the example iOS app running by launching the site from the _terminal* using the command react-native run-ios . but not in xCode on two different machines??
** I also noted that the manual instructions for iOS do not necessarily match the images provided , had to infer whether to add «bash» to the run script command for example, or when you right-click on your project to add files, do you add the RCTMapbox.xpcodeproj to the root of your project or in the libraries folder? — The choice you make determines whether xCode finds Mapbox.framework easily or not when you embed it in the general tab and it may be the cause of some issues (xCode might not find it on building the project and the icon indicates its ‘missing’)

frankbolviken commented Mar 13, 2016

I’m getting the same issue. Been following the guide for adding to Xcode manually, but getting the
framework not found Mapbox when trying to build the application.

frankbolviken commented Mar 15, 2016

My problem was that I initially did one of the steps wrong (added a library to the wrong path), and no matter if I fixed it it was broken.
Had to recreate the whole project, then it worked fine.

edward-at-intelex commented Mar 21, 2016

@frankbolviken so even just removing and re-adding the correct library and its path did not work for you? re-creating the entire project? strange, I will try.

tharrington commented Apr 13, 2016

@edward-at-intelex did you solve this problem?

digitaldavenyc commented Aug 15, 2016

I am experiencing the same issue. I have followed the guide exactly but still receive the error

dmiskiew commented Sep 16, 2016 •

I added following entry to Build Settings -> Framework Search Paths (Debug and Release) and it solved the problem on my machine:
$(PROJECT_DIR)/../node_modules/react-native-mapbox-gl (recursive)

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Why do I get clang: error: linker command failed with exit code 1?

I am a newbie who is slowly working his way through K&R using Xcode. In the Functions section I entered the code for their example of the power function as follows.

When I try to run it the following error appears:

I have read a lot of the answers to this question but cannot see how it applies to my situation with such a little program.
Would be grateful for any help.

5 Answers 5

Why do I get clang: error: linker command failed with exit code 1?

You just declared the function. There is not any definition in code. At the time of linking process , compiler(here clang) cannot link power function to its definition so linker throws the error in this kind of situation. If you define

Then linker can link your declaration of power function to its definition ,you will not get any error.

For integer number I have made function for you.

Compile this with gcc file.c

Hope you understand the function. Good luck 🙂

You missed the definition of function int power (int base,int n) which is given after your main ends on the next page of the book.

When you declare prototype of a function you need to define what it should do you just declared the power function and never defined that, that’s why you got error.

Include the following definition, your code will compile the way you wants it to be.

PRE-EDIT ANSWER NOW THIS IS NOT RELEVANT BUT USEFULL

I think you want to use function pow() defined in math.h .

The C library function pow(double a, double b) returns a raised to the power of b . This function returns a double value so to print that correct specifier will be «%lf» .

In this case you just need to include header file

In your program.

There is no need to give function declaration int power(int m, int n);

The error you are having is due to giveing I as on of the parameter to pow() because when you will compile your code (after including math.h and using pow() replacing i with any integer numbers will compile your code and will give proper output.

This will give you proper result but when you compile it with

It throws same error so I think pow() takes only constants as input so it won’t run in for loop.

And if you don’t want to include math.h you can simply declare

That will link correctly with the library code without using the math.h include file, here is an example.

For more on pow() you can check man page on Linux i.e. man pow .

you can define power function

then your issue will get fixed.

Your getting error, because there is not deceleration for the defined function. So add the deceleration as shown in above.

There is a standard library function which does just that.

You have to link it explicitly because the default linker , that is ld invoked when no other options given, doesn’t link with standard math library.

So you have to do it like.

First you get the error because the compiler can not find the definition of the power function that you are using. Even if you write

There is an error because you are not defining the function. There is missing <> at the end of the definition and even if you are putting it at the end of the definition, you will get an error because you are not returning nothing for a int function. So, at least if you want to define a function, you have to proceed like this :

Then, you will be able to use your function power() in the main function. But, you are doing nothing in the power() function, so you will get nothing back of calling it. If you want to compute the power of a number, you can use the function pow() that is present in the cmath library. A straightforward way of doing it is something like this :

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linker command failed with exit code 1 #22093

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gifary commented Nov 3, 2018

Review the documentation: https://facebook.github.io/react-native Search for existing issues: https://github.com/facebook/react-native/issues Use the latest React Native release: https://github.com/facebook/react-native/releases

Environment

React Native Environment Info:
System:
OS: macOS 10.14
CPU: x64 Intel(R) Core(TM) i5-4250U CPU @ 1.30GHz
Memory: 1.23 GB / 8.00 GB
Shell: 5.3 — /bin/zsh
Binaries:
Node: 10.8.0 — /usr/local/bin/node
Yarn: 1.9.4 — /usr/local/bin/yarn
npm: 6.2.0 — /usr/local/bin/npm
Watchman: 4.9.0 — /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 12.1, macOS 10.14, tvOS 12.1, watchOS 5.1
Android SDK:
Build Tools: 23.0.1, 23.0.2, 23.0.3, 24.0.1, 25.0.0, 25.0.1, 25.0.2, 26.0.0, 26.0.1, 26.0.2, 26.0.3, 27.0.2, 27.0.3, 28.0.2
API Levels: 10, 21, 23, 24, 25, 26, 27, 7
IDEs:
Android Studio: 3.0 AI-171.4443003
Xcode: 10.1/10B61 — /usr/bin/xcodebuild
npmPackages:
react: 16.4.1 => 16.4.1
react-native: 0.56.0 => 0.56.0
npmGlobalPackages:
create-react-native-app: 1.0.0
react-native-cli: 2.0.1
react-native-git-upgrade: 0.2.7
react-native-rename: 2.2.2

Description

When i build via xcode 10.1 I got error

ld: warning: directory not found for option ‘-L/Users/gifary/Library/Developer/Xcode/DerivedData/hellobeautyvendor-buwtwjsnileccuckwrfwdxvbwidb/Build/Products/Debug-iphonesimulator/React’
ld: library not found for -lRNFirebase
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Reproducible Demo

I open project .xcworkspace and run with emulator

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