Xcode 10 (iOS 12) does not contain libstdc++6.0.9

Question

I download the newest Xcode from Apple, but I found I cannot search the library named \"libstdc++6.0.9\".

Answer 1

You should remove libstdc++ from other linker flags in your xcode project

Check this :

Answer 2

This will work. Do not copy the .dylib files from /usr/lib to simruntime.

List of files and paths to copy from Xcode 9.4.1 to Xcode 10.2.1

A) Copy the file: libstdc++.6.0.9.tbd and libstdc++.6.tbd and libstdc++.tbd

from > Xcode9_41/Xcode9_41.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib

to > /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib

B) Copy the file: libstdc++.6.0.9.dylib and libstdc++.6.dylib and libstdc++.dylib

from > Xcode9_41/Xcode9_41.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib

to > /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib

Answer 3

For me -l"stdc++.6" was added during pod install I found it in 'Pods/Target\ Support\ Files/Pods-SomeTarget/Pods-SomeTarget.debug.xcconfig'

To resolve the issue you can use post_install handler in Podfile:

post_install do |installer|
    installer.pods_project.targets.each do |target|
        if target.name == "Pods-SomeTarget”
            puts "Updating #{target.name} OTHER_LDFLAGS"
            target.build_configurations.each do |config|
                xcconfig_path = config.base_configuration_reference.real_path
                xcconfig = File.read(xcconfig_path)
                new_xcconfig = xcconfig.gsub('-l"stdc++.6" ', '')
                File.open(xcconfig_path, "w") { |file| file << new_xcconfig }
            end
        end
    end
end

Answer 4

libstdc++ is removed in iOS 12.

I wish I had a better source than an Apple engineer on Twitter, but that's all I have.

@jeremyhu PSA: libstdc++ is gone from the iOS 12.0 SDK (it is present in the runtime for binary compatibility). It's days are numbered on macOS as well. Migrate over to libc++ if you haven't already. #WWDC2018 #cplusplus

Edit: Here's a better source, Xcode 10 patch notes

Building with libstdc++ was deprecated with Xcode 8 and is not supported in Xcode 10 when targeting iOS. C++ projects must now migrate to libc++ and are recommended to set a deployment target of iOS 7 or later. Besides changing the C++ Standard Library build setting, developers should audit hard-coded linker flags and target dependencies to remove references to libstdc++ (including -lstdc++, -lstdc++.6.0.9, libstdc++.6.0.9.tbd, and libstdc++.6.0.9.dylib). Project dependencies such as static archives that were built against libstdc++ will also need to be rebuilt against libc++. (40885260)

Answer 5

Because apple removes libstdc++ in Xcode 10.0, so if you want to solve the problem, you can try to manually copy the file to lib.

1.iPhoneOS and iPhoneSimulator file

copy the file: libstdc++.6.0.9.tbd and libstdc++.6.tbd and libstdc++.tbd to :

• /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib/

• /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/

2.iOS.simruntime file

copy the file: libstdc++.6.0.9.dylib and libstdc++.6.dylib and libstdc++.dylib to:

• /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib

Answer 6

I've faced the same issue after updating to xcode 10. I've resolved this issue by downloading libstdc++.6.0.9.tbd and libstdc++.6.tbd from https://github.com/Kila2/libstdc-.6.0.9.tbd.

then i copied these files to my project folder. After that I added these libs in Linked Frameworks and Libraries by following these steps: Project > Target > General > Linked Frameworks and Libraries click (+) > Click 'Add Other' > Navigat to your project folder in 'Open File' and select these libraries and add.

Now run the project it will run perfectly..