Make jvm_import use java from resolved toolchain instead of host machine.
#1058
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@comius, mind checking if my toolchain usage is kosher? |
jin
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fmeum
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PR bazel-contrib#1058 made the `jvm_import` actions use Java toolchains rather than host tools, but chose the runtime used to run `javac` instead of the runtime used to run build tools. The latter can be configured via `--tool_java_runtime_version` while the former is fixed in the Java compilation toolchain.
jin
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PR #1058 made the `jvm_import` actions use Java toolchains rather than host tools, but chose the runtime used to run `javac` instead of the runtime used to run build tools. The latter can be configured via `--tool_java_runtime_version` while the former is fixed in the Java compilation toolchain.
jin
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These PRs aren't needed since the downstream Bazel build just needed to pass `--tool_java_runtime_version` on top of `--tool_java_language_version`. cc @fmeum
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This ensures that the AddJarManifestEntry jar used in the
jvm_importactions is executed with the jdk version set by the downstream project's language version (which was used to correctly build the jar itself), which resolves to the right toolchain, instead of using whatever@local_jdkresolves to.This fixes the case where the jar is built with a newer JDK version/lang level, but executed with an older runtime.
Unblocks Bazel's JDK 21 upgrade.
Fixes #895