我正在评估Bazel并尝试对其进行配置,以便它使用与构建时所用的JDK不同的JDK来构建和测试我的Scala项目。
这些是我的bazel info
输出中的相关行:
java-home: /nix/store/09x4mnxfzppwq1yjaakrfa6aj3rp7sw8-openjdk-11.0.4-ga/lib/openjdk
java-runtime: OpenJDK Runtime Environment (build 11.0.3-internal+0-adhoc..jdk11u-jdk-11.0.3-ga) by Oracle Corporation
java-vm: OpenJDK 64-Bit Server VM (build 11.0.3-internal+0-adhoc..jdk11u-jdk-11.0.3-ga, mixed mode) by Oracle Corporation
max-heap-size: 8325MB
package_path: %workspace%
release: release 1.1.0- (@non-git)
尽管我的软件包管理器似乎已经使用openjdk的较新版本构建了Bazel,但我要构建/测试的项目应该使用我安装在/usr/lib/jvm/java-8-openjdk
下的JDK。
通过研究各种github问题,最终得到了以下解决方案,该解决方案使我可以获得绿色版本:
bazel test \
--define=ABSOLUTE_JAVABASE=/usr/lib/jvm/java-8-openjdk \
--host_javabase=@bazel_tools//tools/jdk:absolute_javabase \
--host_java_toolchain=@bazel_tools//tools/jdk:toolchain_vanilla \
--java_toolchain=@bazel_tools//tools/jdk:toolchain_vanilla \
--test_timeout=10 --test_output=all //...
但是,我仍然对以下内容感到困惑:
答案 0 :(得分:0)
我如何才能基于项目永久设置此选项,这样我就不必一直提供它们? 我可以通过intellij Bazel插件自动选择它的方式来这样做吗?
是的。将此添加到<project root>/.bazelrc
中,以使所有构建都使用本地JDK:
build --define=ABSOLUTE_JAVABASE=/usr/lib/jvm/java-8-openjdk
build --host_javabase=@bazel_tools//tools/jdk:absolute_javabase
build --host_java_toolchain=@bazel_tools//tools/jdk:toolchain_vanilla
build --java_toolchain=@bazel_tools//tools/jdk:toolchain_vanilla
IntelliJ插件将自动提取这些信息。
或者,将它们分组在.bazelrc
这样的local_jdk
配置下,您可以使用bazel build //:target --config=local_jdk
选择它们,因此默认的无配置版本不会受到影响。
build:local_jdk --define=ABSOLUTE_JAVABASE=/usr/lib/jvm/java-8-openjdk
build:local_jdk --host_javabase=@bazel_tools//tools/jdk:absolute_javabase
build:local_jdk --host_java_toolchain=@bazel_tools//tools/jdk:toolchain_vanilla
build:local_jdk --java_toolchain=@bazel_tools//tools/jdk:toolchain_vanilla
--host_javabase
定义Java规则用于宿主工具编译的JDK的位置。
$ bazel query --output=build @bazel_tools//tools/jdk:absolute_javabase
java_runtime(
name = "absolute_javabase",
tags = ["__JAVA_RULES_MIGRATION_DO_NOT_USE_WILL_BREAK__"],
generator_name = "absolute_javabase",
generator_function = "java_runtime",
generator_location = "tools/jdk/BUILD:75",
java_home = "$(ABSOLUTE_JAVABASE)",
)
--host_java_toolchain
定义了用于宿主工具编译的Java工具集。
$ bazel query --output=build @bazel_tools//tools/jdk:toolchain_vanilla
java_toolchain(
name = "toolchain_vanilla",
tags = ["__JAVA_RULES_MIGRATION_DO_NOT_USE_WILL_BREAK__"],
generator_name = "toolchain_vanilla",
generator_function = "default_java_toolchain",
generator_location = "tools/jdk/BUILD:367",
source_version = "",
target_version = "",
bootclasspath = ["@bazel_tools//tools/jdk:platformclasspath"],
misc = ["-XDskipDuplicateBridges=true", "-g", "-parameters"],
jvm_opts = [],
javac_supports_workers = True,
javac = ["@bazel_tools//tools/jdk:javac_jar"],
tools = ["@bazel_tools//tools/jdk:java_compiler_jar", "@bazel_tools//tools/jdk:jdk_compiler_jar"],
javabuilder = ["@bazel_tools//tools/jdk:vanillajavabuilder"],
singlejar = ["@bazel_tools//tools/jdk:singlejar"],
genclass = ["@bazel_tools//tools/jdk:genclass"],
ijar = ["@bazel_tools//tools/jdk:ijar"],
header_compiler = ["@bazel_tools//tools/jdk:turbine"],
header_compiler_direct = ["@bazel_tools//tools/jdk:turbine_direct"],
forcibly_disable_header_compilation = True,
)
--java_toolchain
定义了用于目标Java编译的Java工具集。这与--host_java_toolchain
无关,可以将编译宿主工具与实际源代码编译分离。