Xcode throws 'atomic_notify_one<unsigned long>' is unavailable

React NativeReact Native-IosXcode12beta6

React Native Problem Overview

I installed Xcode 12 on my Mac, tried building my react native app that runs perfectly on android, and get 'atomic_notify_one<unsigned long>' is unavailable. This is the most information I get from the error.

React Native Solutions

Solution 1 - React Native

Instead of commenting out flipper here is a solution that worked for me.

Update flipper in your Podfile to look like this

use_flipper!({ 'Flipper-Folly' => '2.5.3', 'Flipper' => '0.87.0', 'Flipper-RSocket' => '1.3.1' })

Run pod repo update inside the ios folder

And finally, update your project pods using

pod install

Solution 2 - React Native

This issue happened again today after the iOS simulators were updated to iOS 14.5. The answer posted by "Shared S Katre" seems to be a good work-around.

Because React-Native is open source code, I would think that any big updates on iOS can definitely bring about breaking changes. I imagine those will be fixed later.

Anyways - the issue does seem to be with Flipper, which serves as a debugging tool for RN (https://reactnative.dev/blog/2020/03/26/version-0.62).

If you just need to get your project to build, you can just simply comment out flipper in your podfile, and re-install your pods like so.

Podfile

# Enables Flipper.
#
# Note that if you have use_frameworks! enabled, Flipper will not work and
# you should disable the next line.
# use_flipper!()

Next, re-install your pods. I cd'd into the root of the project and used npx.

$ npx pod-install

Last, try building and running your project:

$ npx react-native run-ios

Update:

Per the comments, looks like this has been fixed now. If you want flipper, you should be able to revert your Podfile and update flipper.

See: https://stackoverflow.com/a/67314652/9906042

Thanks Stackers!

Solution 3 - React Native

  1. Fix Podfile as shown in below image enter image description here
  2. cd ios
  3. delete Pods folder and Podfile.lock
  4. pod install
  5. pod update
  6. cd .. && npx react-native run-ios

Solution 4 - React Native

If someone has still this error (I have just updated Mac, Xcode, etc), you can fix the build without disabling Flipper and Hermes; in your Pod file under post_install just add (I have found it somewhere on the web and changed it to fix new errors with the last updates):

post_install do |installer|
    flipper_post_install(installer)
    react_native_post_install(installer)

    # # to build for the simulator on Apple M1
    # installer.pods_project.targets.each do |target|
    #   target.build_configurations.each do |config|
    #     # disables arm64 builds for the simulator
    #     config.build_settings['EXCLUDED_ARCHS[sdk=iphonesimulator*]'] = 'arm64'
    #   end
    # end

    ## Fix for XCode 12.5 & RN 0.62.2 - See https://github.com/facebook/react-native/issues/28405
    find_and_replace("../node_modules/react-native/React/CxxBridge/RCTCxxBridge.mm",
      "_initializeModules:(NSArray<id<RCTBridgeModule>> *)modules", "_initializeModules:(NSArray<Class> *)modules")

    find_and_replace("../node_modules/react-native/ReactCommon/turbomodule/core/platform/ios/RCTTurboModuleManager.mm",
      "RCTBridgeModuleNameForClass(strongModule))", "RCTBridgeModuleNameForClass(Class(strongModule)))")

    ## Fix for Flipper-Folly on iOS 14.5
    find_and_replace("Pods/Flipper-Folly/folly/synchronization/DistributedMutex-inl.h",
      "atomic_notify_one(state)", "folly::atomic_notify_one(state)")

    find_and_replace("Pods/Headers/Private/RCT-Folly/folly/synchronization/DistributedMutex-inl.h",
      "atomic_notify_one(state)", "folly::atomic_notify_one(state)")

    find_and_replace("Pods/Flipper-Folly/folly/synchronization/DistributedMutex-inl.h",
      "atomic_wait_until(&state, previous | data, deadline)", "folly::atomic_wait_until(&state, previous | data, deadline)")
  end

Before your target, add

# fixes for last Mac updates
def find_and_replace(dir, findstr, replacestr)
  Dir[dir].each do |name|
      text = File.read(name)
      replace = text.gsub(findstr,replacestr)
      if text != replace
          puts "Fix: " + name
          File.open(name, "w") { |file| file.puts replace }
          STDOUT.flush
      end
  end
  Dir[dir + '*/'].each(&method(:find_and_replace))
end

Solution 5 - React Native

I have to comment all #ifdef FB_SONARKIT_ENABLED in AppDelegate.m, set hermes to false and comment Flipper in Podfile.

After all, delete Pods and Podfile.lock, then pod install

Solution 6 - React Native

just commented this line and solved this issue-

  # use_flipper!
  # post_install do |installer|
  #   flipper_post_install(installer)
  # end

Solution 7 - React Native

This error was an error from flipper. Flipper threw several more less descriptive errors that I had to comment it on my podfile. After commenting, this error stopped.

Solution 8 - React Native

I had the same issue when building in XCode 12.5. If temporarily disabling Flipper is not an option for you, you can downgrade to XCode 12.4. This fixed it for me. You can download XCode 12.4 here: https://developer.apple.com/download/more

Solution 9 - React Native

I think the answer provided by @opensw will work but I have found something more enhanced solution so that it works with pod install every time without deleting the Pods folder. First of all, change add/Replace this line in your Podfile

use_flipper!({ 'Flipper-Folly' => '2.5.3', 'Flipper' => '0.87.0', 'Flipper-RSocket' => '1.3.1' })

Now in the latest versions mentioned in the above lines fixes an issue with the Flipper-folly But We also need to take care of the RCT-folly and for that, we will use the find_and_replace function. Here is the new function which I got from the here

# Define find-and-replace function
  def find_and_replace(dir, findstr, replacestr)
    Dir[dir].each do |name|
        text = File.read(name)
        replace = text.gsub(findstr,replacestr)
        replaced = text.index(replacestr)
        if replaced == nil && text != replace
            puts "Fix: " + name
            File.open(name, "w") { |file| file.puts replace }
            STDOUT.flush
        end
    end
    Dir[dir + '*/'].each(&method(:find_and_replace))
  end

Now call this function from the post-install so we will need to add the following 2 function calls inside post_install do |installer|

 find_and_replace("Pods/RCT-Folly/folly/synchronization/DistributedMutex-inl.h",
                   "atomic_notify_one(state)", "folly::atomic_notify_one(state)")

  find_and_replace("Pods/RCT-Folly/folly/synchronization/DistributedMutex-inl.h",
  "atomic_wait_until(&state, previous | data, deadline)", "folly::atomic_wait_until(&state, previous | data, deadline)")

Here is my Answer in Github

Solution 10 - React Native

Replace all current flipper code in your Podfile with this base on your React Native version:

add_flipper_pods!({ 'Flipper-Folly' => '2.5.3', 'Flipper' => '0.87.0', 'Flipper-RSocket' => '1.3.1' })

or

use_flipper!({ 'Flipper-Folly' => '2.5.3', 'Flipper' => '0.87.0', 'Flipper-RSocket' => '1.3.1' })

Then update for Pods project using this:

cd ios && pod install && cd ..

Solution 11 - React Native

You need to comment below Flipper code in Podfile:

use_flipper!
post_install do |installer|
    flipper_post_install(installer)
  end

Solution 12 - React Native

To expand a little bit on the Umang's and opensw answers.

I have updated find_and_replace as following. Note, I have added system("chmod +w " + name) that fixes Permission denied @ rb_sysopen error.

def find_and_replace(dir, findstr, replacestr)
  Dir[dir].each do |name|
      text = File.read(name)
      replace = text.gsub(findstr,replacestr)

      if text != replace
          puts "Fix: " + name
          system("chmod +w " + name)
          File.open(name, "w") { |file| file.puts replace }
          STDOUT.flush
      end
  end
  Dir[dir + '*/'].each(&method(:find_and_replace))
end

Here is my flipper configuration

use_flipper!({ 'Flipper' => '0.87.0', 'Flipper-Folly' => '2.5.3', 'Flipper-RSocket' => '1.3.1' })

And as for fixing files, in my case, on the most recent versions as of Apr. 30th it is enough to update DistributedMutex-inl.h in only one place.

Also, note how I added two extra whitespace symbols before the function name. This is needed so pod install won't break code on the subsequent calls.

  post_install do |installer|
    flipper_post_install(installer)
    react_native_post_install(installer)

    find_and_replace("Pods/RCT-Folly/folly/synchronization/DistributedMutex-inl.h",
          "  atomic_notify_one(state);", "  folly::atomic_notify_one(state);")
  end

Solution 13 - React Native

I had this same issue upgrading a project from RN 0.63 to 0.64 (and using Xcode 12.5), but the top voted answer didn't solve the issue for me, and I was keen to avoid any additional scripts.

I noticed in the Upgrade Helper some changes in the podfile - particularly the change from flipper_post_install(installer) to react_native_post_install(installer). I made this change and blitzed my pods directory and then ran pod install --repo-update and this fixed it for me :)

I also noticed a patch being run for the DistributedMutex file (which was the file in question) after the pods were installed, so it seems to me that this should be the correct fix

Bonus: This also allowed me to remove the old flipper_post_install script I had at the top of my podfile from a previous upgrade

Solution 14 - React Native

replace atomic_nofiy_one with folly::atomic_notify_one, the full podfile is blow:

platform :ios, '9.0'
require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'

def add_flipper_pods!
  version = '~> 0.33.1'
  pod 'FlipperKit', version, :configuration => 'Debug'
  pod 'FlipperKit/FlipperKitLayoutPlugin', version, :configuration => 'Debug'
  pod 'FlipperKit/SKIOSNetworkPlugin', version, :configuration => 'Debug'
  pod 'FlipperKit/FlipperKitUserDefaultsPlugin', version, :configuration => 'Debug'
  pod 'FlipperKit/FlipperKitReactPlugin', version, :configuration => 'Debug'
end

# Post Install processing for Flipper
def flipper_post_install(installer)
  installer.pods_project.targets.each do |target|
    if target.name == 'YogaKit'
      target.build_configurations.each do |config|
        config.build_settings['SWIFT_VERSION'] = '4.1'
      end
    end
  end
end

target 'AwesomeProject' do
  # Pods for AwesomeProject
  pod 'FBLazyVector', :path => "../node_modules/react-native/Libraries/FBLazyVector"
  pod 'FBReactNativeSpec', :path => "../node_modules/react-native/Libraries/FBReactNativeSpec"
  pod 'RCTRequired', :path => "../node_modules/react-native/Libraries/RCTRequired"
  pod 'RCTTypeSafety', :path => "../node_modules/react-native/Libraries/TypeSafety"
  pod 'React', :path => '../node_modules/react-native/'
  pod 'React-Core', :path => '../node_modules/react-native/'
  pod 'React-CoreModules', :path => '../node_modules/react-native/React/CoreModules'
  pod 'React-Core/DevSupport', :path => '../node_modules/react-native/'
  pod 'React-RCTActionSheet', :path => '../node_modules/react-native/Libraries/ActionSheetIOS'
  pod 'React-RCTAnimation', :path => '../node_modules/react-native/Libraries/NativeAnimation'
  pod 'React-RCTBlob', :path => '../node_modules/react-native/Libraries/Blob'
  pod 'React-RCTImage', :path => '../node_modules/react-native/Libraries/Image'
  pod 'React-RCTLinking', :path => '../node_modules/react-native/Libraries/LinkingIOS'
  pod 'React-RCTNetwork', :path => '../node_modules/react-native/Libraries/Network'
  pod 'React-RCTSettings', :path => '../node_modules/react-native/Libraries/Settings'
  pod 'React-RCTText', :path => '../node_modules/react-native/Libraries/Text'
  pod 'React-RCTVibration', :path => '../node_modules/react-native/Libraries/Vibration'
  pod 'React-Core/RCTWebSocket', :path => '../node_modules/react-native/'

  pod 'React-cxxreact', :path => '../node_modules/react-native/ReactCommon/cxxreact'
  pod 'React-jsi', :path => '../node_modules/react-native/ReactCommon/jsi'
  pod 'React-jsiexecutor', :path => '../node_modules/react-native/ReactCommon/jsiexecutor'
  pod 'React-jsinspector', :path => '../node_modules/react-native/ReactCommon/jsinspector'
  pod 'ReactCommon/callinvoker', :path => "../node_modules/react-native/ReactCommon"
  pod 'ReactCommon/turbomodule/core', :path => "../node_modules/react-native/ReactCommon"
  pod 'Yoga', :path => '../node_modules/react-native/ReactCommon/yoga', :modular_headers => true

  pod 'DoubleConversion', :podspec => '../node_modules/react-native/third-party-podspecs/DoubleConversion.podspec'
  pod 'glog', :podspec => '../node_modules/react-native/third-party-podspecs/glog.podspec'
  pod 'Folly', :podspec => '../node_modules/react-native/third-party-podspecs/Folly.podspec'

  target 'AwesomeProjectTests' do
    inherit! :complete
    # Pods for testing
  end

  use_native_modules!

  # Enables Flipper.
  #
  # Note that if you have use_frameworks! enabled, Flipper will not work and
  # you should disable these next few lines.
  add_flipper_pods!
  post_install do |installer|
    flipper_post_install(installer)
    ## Fix for XCode 12.5 beta
    find_and_replace("../node_modules/react-native/React/CxxBridge/RCTCxxBridge.mm",
        "_initializeModules:(NSArray<id<RCTBridgeModule>> *)modules", "_initializeModules:(NSArray<Class> *)modules")
    find_and_replace("../node_modules/react-native/ReactCommon/turbomodule/core/platform/ios/RCTTurboModuleManager.mm",
    "RCTBridgeModuleNameForClass(strongModule))", "RCTBridgeModuleNameForClass(Class(strongModule)))")
    find_and_replace("Pods/Flipper-Folly/folly/synchronization/DistributedMutex-inl.h",
             "  atomic_notify_one(state);", "  folly::atomic_notify_one(state);")
  end
end

target 'AwesomeProject-tvOS' do
  # Pods for AwesomeProject-tvOS

  target 'AwesomeProject-tvOSTests' do
    inherit! :search_paths
    # Pods for testing
  end
end

def find_and_replace(dir, findstr, replacestr)
  Dir[dir].each do |name|
        text = File.read(name)
        replace = text.gsub(findstr,replacestr)

        if text != replace
            puts "Fix: " + name
            File.open(name, "w") { |file| file.puts replace }
            STDOUT.flush
        end
    end
    Dir[dir + '*/'].each(&method(:find_and_replace))
end
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Attributions

All content for this solution is sourced from the original question on Stackoverflow.

The content on this page is licensed under the Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license.

Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionMarvelous IkechiView Question on Stackoverflow
Solution 1 - React Nativekabangi juliusView Answer on Stackoverflow
Solution 2 - React Nativecy-cView Answer on Stackoverflow
Solution 3 - React Nativeshicheng王事成View Answer on Stackoverflow
Solution 4 - React NativeopenswView Answer on Stackoverflow
Solution 5 - React NativeAlan Oliveira de QuadrosView Answer on Stackoverflow
Solution 6 - React Nativejyotishman saikiaView Answer on Stackoverflow
Solution 7 - React NativeMarvelous IkechiView Answer on Stackoverflow
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Solution 9 - React NativeUmang LoriyaView Answer on Stackoverflow
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