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layout default-layout
title How to resolve the "Building for iOS Simulator, but linking in dylib built for iOS" error when building for the iOS simulator?
keywords Dynamsoft Barcode Reader, FAQ, Mobile, tech basic, ios, arm64, simulator, exclude architectures
description How to resolve the "Building for iOS Simulator, but linking in dylib built for iOS" error when building for the iOS simulator?
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How to resolve the "Building for iOS Simulator, but linking in dylib built for iOS" error when building for the iOS simulator?

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DBR iOS can be used to build apps that belong to the arm64 architecture. If you try building an app for the arm64 simulator, and you migrated your app from an older version of Xcode to Xcode 12 or higher, then you might encounter the following error message:

ld: "Building for iOS Simulator, but linking in dylib built for iOS, file '/ios/Pods/DynamsoftBarcodeReader/DynamsoftBarcodeReader.framework/DynamsoftBarcodeReader' for architecture arm64"


In order to fix the error, please take the following steps under the Build Settings of the Xcode project:

  1. Under User-Defined -> find VALIDATE_WORKSPACE and set it to YES. Rebuild your project.

  2. Under Architectures -> find Build Active Architecture Only and set it to YES.

  3. Under Architectures -> make sure that Architectures is set to $(ARCHS_STANDARD).


If the error message persists, please make one of the following changes:

  • Instead of using the .framework (which all the samples do by default), switch to using the corresponding .xcframework

  • Under the Build Settings -> find Excluded Architectures -> in the Debug field click the + icon -> select Any iOS Simulator SDK -> put "arm64"

  • You can also exclude architectures via the Podfile as such:

    post_install do |installer|
    installer.pods_project.build_configurations.each do |config|
        config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "arm64"
    end
end

    OR

    post_install do |installer|
    installer.pods_project.build_configurations.each do |config|
        config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "uname -m"
    end
end

    OR

    podspec:
s.pod_target_xcconfig = { 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'arm64' }
s.user_target_xcconfig = { 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'arm64' }