java - 如何获得 java_proto_library 的 1.7 兼容输出？

Question

对于 java_library，我可以在构建规则上设置 javacopts 属性。 java_proto_library 或 java_lite_proto_library 似乎没有任何相似之处。

我可以通过-javacopt设置javac的-source和-target选项来解决这个问题标志到 bazel，但我宁愿将它编码在 BUILD 文件中。

Answer 1

您可以添加 JDK7 工具链，然后用它构建所有内容。例如，添加 this到构建文件:

java_toolchain(
    name = "jdk7",
    bootclasspath = ["@bazel_tools//tools/jdk:bootclasspath"],
    encoding = "UTF-8",
    extclasspath = ["@bazel_tools//tools/jdk:extdir"],
    genclass = ["@bazel_tools//tools/jdk:GenClass_deploy.jar"],
    header_compiler = ["@bazel_tools//tools/jdk:turbine_deploy.jar"],
    ijar = ["@bazel_tools//tools/jdk:ijar"],
    javabuilder = ["@bazel_tools//tools/jdk:JavaBuilder_deploy.jar"],
    javac = ["@bazel_tools//third_party/java/jdk/langtools:javac_jar"],
    javac_supports_workers = 1,
    jvm_opts = [
        "-XX:+TieredCompilation",
        "-XX:TieredStopAtLevel=1",
    ],
    singlejar = ["@bazel_tools//tools/jdk:SingleJar_deploy.jar"],
    source_version = "7",
    target_version = "7",
    visibility = ["//visibility:public"],
)

然后构建:

bazel build --java_toolchain=//whatever:jdk7 //your:target