getting Xcode-related error with Bazel

[Janak Ramakrishnan]

I'm getting the error:

$ bazel build src/main/java/... -k

.............

ERROR: /private/var/tmp/_bazel_janakr/449f66540f7a827a317d06e34f37f945/external/local_config_cc/BUILD:50:5: in apple_cc_toolchain rule @local_config_cc//:cc-compiler-darwin_x86_64: Xcode version must be specified to use an Apple CROSSTOOL. If your Xcode version has changed recently, try: "bazel clean --expunge" to re-run Xcode configuration

Running "bazel clean --expunge" doesn't seem to help. I have Xcode 9.3 installed, Bazel 0.12. By the way, following the instructions to enable Xcode for all users gives me an error:

$ sudo xcodebuild -license accept

Password: 

xcode-select: error: tool 'xcodebuild' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is a command line tools instance

[László Csomor]

/cc Apple rule folks

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[Marcel Hlopko]

Hi Janak,

either export BAZEL_USE_CPP_ONLY_TOOLCHAIN=1, or install full xcode (the error suggests that you only installed xcode command line tools, you can verify by trying to open Xcode app).

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[Janak Ramakrishnan]

I'm able to open the full Xcode app (I get a "Welcome to Xcode" screen with
options for starting a project).

[Philipp Wollermann]

What's the output of "xcode-select -p"?

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[Janak Ramakrishnan]

/Library/Developer/CommandLineTools
On Wed, Apr 25, 2018 at 7:50 PM Philipp Wollermann <phi...@google.com>
wrote:

[Philipp Wollermann]

Yeah, I think that happens when the Command-Line Tools get installed after
(or was it before?) Xcode gets installed.
It then sticks to the CLT version of the tools.

You should be able to reset it to use Xcode:

# Reset to Xcode.
$ sudo xcode-select -r

# Verify that it now points to the Xcode tools.
$ xcode-select -p
/Applications/Xcode.app/Contents/Developer

If "-r" doesn't do the right thing, I think you can also set the path
manually:
$ sudo xcode-select -s /Applications/Xcode.app/Contents/Developer

Then run "bazel clean --expunge" once so that it picks up the new toolchain.


On Wed, Apr 25, 2018 at 9:52 PM Janak Ramakrishnan <jan...@google.com>
wrote:

[Janak Ramakrishnan]

That works, thanks! I think it was probably installed before.
On Wed, Apr 25, 2018 at 8:01 PM Philipp Wollermann <phi...@google.com>