Xcode 11 Beta 7 Released

We have released an Xcode 11 Beta 6 image today. You can select the image by adding the following to a job in config.yml :

  xcode: 11.0.0

The only change in this image compared to the beta 5 image is the version of Xcode:

  • Xcode is now version 11.0 Beta 7 Version 11M392r
  • Since this is a beta image, we have a reduced set of simulators, all running iOS 13. We will add more simulators to the final image.

The full manifest of the installed software and SDKs is available here.

Known issues

  • There is an issue where a dialog appears for the first 30 seconds after the image boots reporting that the OS did not shut down cleanly on the last boot. This might impact UI tests. We pre-boot VMs so that builds can start as quickly as possible, so in many cases our VMs have been booted more than 30 seconds prior before to build running, which will reduce the rate of occurrence of this bug.

Upcoming deprecations / changes

Is it possible to install xcode11 command line tools?
My project depends on slather https://github.com/SlatherOrg/slather
I am getting an error

Installing nokogiri 1.10.4 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/ruby -r
./siteconf20190826-765-1hjz5yk.rb extconf.rb
mkmf.rb can’t find header files for ruby at

extconf failed, exit code 1

Gem files will remain installed in
/Users/distiller/project/vendor/bundle/ruby/2.3.0/gems/nokogiri-1.10.4 for
Results logged to

An error occurred while installing nokogiri (1.10.4), and Bundler
cannot continue.
Make sure that gem install nokogiri -v '1.10.4' --source 'https://rubygems.org/' succeeds before bundling.

In Gemfile:
slather was resolved to 2.4.7, which depends on
Exited with code 5

We will try to get that installed in the next image, sure. In the mean time there is a work around: if you use one of the non-system Ruby versions that we install in the image, all of the headers are present.


(Make sure to pass --login to the shell)


Thanks @marc. I will try it

Using custom ruby version worked

Dear CircleCI,

When will the GM release of Xcode 11 be supported? I am unable to build for test or release with the Xcode 11 betas. I’ve tested the GM release and that resolves the issue.


1 Like

Hi @marc
Just wondering if you have any timeline for supporting the Xcode 11 GM?
Brian (Intercom)

I’m building the image now, once that’s built I’ll start distributing it to the fleet. I’d hope to have the GM live in the next 12 hours.


Perfect, thanks @marc

Xcode 11 GM is live now: