OS X v10.11.x 'El Capitan,' Xcode 8, and the Command Line Tools (Or, Rather, the Lack Thereof…) (Tracking)

[RandomDSdevel]

Please follow the general troubleshooting steps first:

• Ran brew update and retried your prior step? N/A (See below…)
• Ran brew doctor, fixed as many issues as possible and retried your prior step? N/A (See below…)
• If you're seeing permission errors tried running sudo chown -R $(whoami) $(brew --prefix)? N/A (See below…)

N. b.: The items in the previous checklist are not applicable to this issue because it describes a problem with Homebrew's installation environment.

Bug reports:

Well, it appears that Apple may have botched the deployment of Xcode 8's command-line tools for OS X v10.11.x 'El Capitan,' as the App Store has not yet presented me with an update notification to install them and they don't seem to be on Apple Developer Connection's manual 'Downloads for Apple Developers' page, either. I imagine that this might end up causing some problems for Homebrew's user base, so I filed this issue. I've also posted a question on the Apple Developer Forums. It appears that I'm not the only person who's noticed this deficiency, either, as I was also able to find another user's forum post earlier this afternoon.

N. b.: Accessing most of the ADC links and all of the Apple Developer Forum links I included in the paragraph above requires a valid free or paid Apple Developer account.

---

P. S.: Apparently, I'm a bit late to the party on this one! Some of the relevant issues and pull requests were actually filed before I posted this one! In any case, here's a list of the other relevant issues:

• Homebrew/brew:
  • Pull Request #721: 'Set -no_weak_imports linker flag for Xcode 8'
  • Pull Request #741: 'Add permit_weak_imports directive'
  • Pull Request #782: 'Make -no_weak_imports opt-in.'
  • Pull Request #965: 'Warn when using Xcode 8 without CLT on 10.11'
  • Issue #969: '"Empty archive" error when install formulas with tar.xz archives, after upgrading to Xcode 8'
  • Pull Request #970: 'superenv: help Autotools with 10.12 SDK on 10.11'
• Homebrew/homebrew-core:
  • Issue #1957: 'macOS 10.12 and Xcode 8.0 broken formulae'
  • Issue #2674: 'xz broken on OSX 10.11.6 Beta (15G24b) with XCode 8 Beta'
  • Issue #3727: 'Set -no_weak_imports linker flag for Xcode 8 on OS X 10.11'
  • Issue #4809: 'python3 failed to build on 10.11.6 with Xcode 8' (Specifically, this comment on that thread.)

[RandomDSdevel]

I also just found another report of this in the form of a post on the MacRumors forums.

[zmwangx]

I don't have time to type out details right now, but rest assured, we're well aware of the problems, and a huge chunk of those were solved by #970. You'll find more information if you look at the recent issues filed here or in homebrew-core.

[RandomDSdevel]

@zmwangx: OK, glad you guys know what's going on with respect to this. Hopefully Apple releases the 10.11 CLT package soon, though…

[RandomDSdevel]

@zmwangx: OK, I've started adding a list of the pull requests and issues that are relevant to this tracking issue. It's still incomplete, though, so bear with me here…

[zmwangx]

Generally it's just the xcode 8 tag. (I mean over at homebrew-core; there's no such tag here.)

[RandomDSdevel]

@zmwangx: Ah, heh, I should have guessed. That should save me some time following links around in a wild goose chase. I've got everything from doing that added to the list, though, so I thought it was safe to remove my notices that certain parts of that list were a work in progress. Since I forgot to look through all the things tagged 'Xcode 8,' I'll add that back now…; whoops! 😆

P. S.: OK, there we go: I just added the 'work in progress' notices back to the list!

[RandomDSdevel]

@zmwangx: All right, I think that's all the major related issues and pull requests (there are a few more, but I omitted them because they basically just link back to the listed issues and PRs,) so I removed the 'work in progress' markers from both sub-lists. Hopefully this issue ends up being helpful!

[RandomDSdevel]

OK, I just got a response from somebody who sounds like they know what they're talking about (hopefully they work at Apple) on the discussion thread I started on the Apple Developer Forums earlier. Keep watching that thread for updates if you can't find anything else that looks relevant to the situation here.

[mistydemeo]

Oh dear. Thanks for passing that on - I hope they act on that soon.

[zmwangx]

I don't think the sole response was from an Apple engineer. Listen to this:

It doesn't sound like this will be fixed in time for the Xcode 8.0 release.

(emphasis by me)

[draeath]

EDIT: I can't read, disregard. Sorry!

[zmwangx]

That's not for El Capitan.

[draeath]

I followed your instructions here and followed up with sudo xcode-select --install - this seems to have done the trick (on my end). I did have to do the brew unlink $(brew ls); brew link $(brew ls) bit as well. Finally I had a whole pile of unlinked kegs reported by brew doctor (which I don't recall seeing previously) - so linked all those. I did have some json-c library conflicts to resolve, simply because some third-party software also installed such libraries in /usr/local/lib. Mea culpa.

Anyway. Adding these notes here to help direct folks to the above fixwork, so they don't have to follow the same trail I did.

[zmwangx]

@draeath Um I think you're on the wrong issue.

[draeath]

How so? Issue title is "OS X v10.11.x 'El Capitan,' Xcode 8, and the Command Line Tools (Or, Rather, the Lack Thereof…)" and I just explained what path I had to follow to get them installed.