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docs(bazel): document an installation issue (#21401) 

observed by Igor on a Mac

PR Close #21401
This commit is contained in:
Alex Eagle 2018-01-08 14:07:18 -08:00 committed by Alex Eagle
parent ff6047cb58
commit 0de219adcd
1 changed files with 17 additions and 0 deletions
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docs/BAZEL.md
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@ -73,3 +73,20 @@ The process should automatically connect to the debugger.
- Run test: `bazel run packages/core/test:test_web`
- Open chrome at: [http://localhost:9876/debug.html](http://localhost:9876/debug.html)
- Open chrome inspector
## FAQs
Note: recent XCode update on Mac causes the following Bazel error
```
$ bazel build packages/...
ERROR: /private/var/tmp/_bazel_iminar/9b8801a4939e9750a817dc0cb35bbbca/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
ERROR: Analysis of target '//packages/core/test/render3:render3' failed; build aborted: Analysis of target '@local_config_cc//:cc-compiler-darwin_x86_64' failed; build aborted
```
To resolve the error do the following:
```
bazel clean --expunge
sudo xcode-select -s /Applications/Xcode.app/Contents/Developer
sudo xcodebuild -license
bazel build packages/...
```
Source: https://stackoverflow.com/questions/45276830/xcode-version-must-be-specified-to-use-an-apple-crosstool