[FreeBSD] No matching toolchains found for types @bazel_tools//tools/jdk:runtime_toolchain_type

[yesudeep]

I'm not sure but how would one add toolchains for FreeBSD?

This is what I see when using Bazel 6.0.0 on FreeBSD 14-CURRENT amd64:

Sun Jan 01 10:13 PM yesudeep at foo running bash5.2 on FreeBSD 14.0-CURRENT amd64
in ~/code/rules_clojure   main
>>> bazel build ...
ERROR: /usr/home/yesudeep/.cache/bazel/_bazel_yesudeep/bfaed87c32bc05637434339d5dc30c4b/external/bazel_tools~remote_coverage_tools_extension~remote_coverage_tools/BUILD:10:12: While resolving toolchains for target @bazel_tools~remote_coverage_tools_extension~remote_coverage_tools//:Main: 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.
ERROR: Analysis of target '//tests/hello_world:core_clojure_test' failed; build aborted:
INFO: Elapsed time: 0.203s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (0 packages loaded, 0 targets configured)

Thank you! :)

[yesudeep]

I fixed this by adding the local JDK toolchain configuration to my .bazelrc:

#common --experimental_enable_bzlmod
# Use the following after 6.0.0 is available on FreeBSD.
common --enable_bzlmod

# See: https://bazel.build/reference/command-line-reference#flag--enable_platform_specific_config
build --enable_platform_specific_config

# See: https://bazel.build/docs/bazel-and-java
build:freebsd --extra_toolchains=@local_jdk//:all

# FreeBSD requires this because rules_java doesn't have a remote JDK for FreeBSD.
build:freebsd --java_runtime_version=local_jdk
build:freebsd --tool_java_runtime_version=local_jdk

Would still be nice if one didn't need to do this. Thank you! :)

[hvadehra]

Using a remote jdk by default for executing tools was a deliberate decision, see #179 (comment) for details.

bazelbuild/bazel#21752 (comment) has some more info on forcing Bazel to use the local jdk for everything.