How to build on Mac OS?

[Fabian Joya]

Hi. I am new to Kythe and am trying to get it to build on Mac OS.

I am following these instructions:

https://kythe.io/getting-started-macos/

I believe I set up all the dependencies. I have Open JDK installed and $JAVA_HOME set to:

$ echo $JAVA_HOME
/opt/homebrew/opt/openjdk

$ java -version
openjdk version "21.0.1" 2023-10-17
OpenJDK Runtime Environment Homebrew (build 21.0.1)
OpenJDK 64-Bit Server VM Homebrew (build 21.0.1, mixed mode, sharing)

I run these commands:

cd $KYTHE_DIR bazel clean --expunge bazel test //kythe/...

And I keep getting this error:

ERROR: /private/var/tmp/_bazel_fabianjoya/33de94a1f52f7004fb3487a893db7f98/external/rules_java/toolchains/BUILD:83:19: While resolving toolchains for target @rules_java//toolchains:current_java_runtime: No matching toolchains found for types @bazel_tools//tools/jdk:runtime_toolchain_type.

To debug, rerun with --toolchain_resolution_debug='@bazel_tools//tools/jdk:runtime_toolchain_type'

If platforms or toolchains are a new concept for you, we'd encourage reading https://bazel.build/concepts/platforms-intro.

What am I missing? How can I troubleshoot this further?

[Salvatore Guarnieri]

Sorry for the late reply. No one on the team builds on mac and we don't have a mac CI set up to ensure the build stays green. So we aren't sure what needs to be fixed. 

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[Shahms King]

When we were setting up CI it was prohibitively difficult to do so for Mac, largely because Apple refuses to allow its toolchains to run on non-Apple hardware and that hardware is generally ill-suited to datacenter deployments.  

After a brief discussion the other day, it seems like the macOS CI situation has improved since the last time we looked at it, however, so it might be feasible to re-evaluate this if someone can find the time to do so.

--Shahms

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:-P

[Eric Amorde]

I've also been trying to run on macOS and ran into issues. I've put up a PR for the issues I've encountered and I was able to get things to build on my machine.

https://github.com/kythe/kythe/pull/5922