bazel:protobuf依赖
protobuf可以说是后台开发必备。bazel依赖protobuf有些复杂，也有些坑。坑
如果你电脑本地安装了protobuf的工具，bazel也依赖了protobuf，bazel build 的时候会找到两个protobuf，所以编译会出问题.会出错误，比如：
external/com_google_protobuf/XXX error: XXX ？这个时候排除掉本地的就好了。
bazel build ... --sandbox_block_path=/usr/localbazel版本过高的话，会有如下错误：
in proto_lang_toolchain rule @com_google_protobuf//:cc_toolchain: '@com_google_protobuf//:cc_toolchain' does not have mandatory provider 'ProtoInfo'.
可以加以下参数解决
bazel build ... --incompatible_blacklisted_protos_requires_proto_info=false可以在workspace中新建.bazelrc文件，加上
build --sandbox_block_path=/usr/local
build --incompatible_blacklisted_protos_requires_proto_info=false这样就不会在每次bazel build的时候加编译参数了
如何依赖
bazel的demo:git clone https://github.com/bazelbuild/examples中就有proto的依赖,demo在目录third-party-dependencies中。
自己写的话，workspace文件如下
load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
# rules_cc defines rules for generating C++ code from Protocol Buffers.
http_archive(
name = "rules_cc",
sha256 = "35f2fb4ea0b3e61ad64a369de284e4fbbdcdba71836a5555abb5e194cf119509",
strip_prefix = "rules_cc-624b5d59dfb45672d4239422fa1e3de1822ee110",
urls = [
"https://mirror.bazel.build/github.com/bazelbuild/rules_cc/archive/624b5d59dfb45672d4239422fa1e3de1822ee110.tar.gz",
"https://github.com/bazelbuild/rules_cc/archive/624b5d59dfb45672d4239422fa1e3de1822ee110.tar.gz",
],
)
# rules_java defines rules for generating Java code from Protocol Buffers.
http_archive(
name = "rules_java",
sha256 = "ccf00372878d141f7d5568cedc4c42ad4811ba367ea3e26bc7c43445bbc52895",
strip_prefix = "rules_java-d7bf804c8731edd232cb061cb2a9fe003a85d8ee",
urls = [
"https://mirror.bazel.build/github.com/bazelbuild/rules_java/archive/d7bf804c8731edd232cb061cb2a9fe003a85d8ee.tar.gz",
"https://github.com/bazelbuild/rules_java/archive/d7bf804c8731edd232cb061cb2a9fe003a85d8ee.tar.gz",
],
)
# rules_proto defines abstract rules for building Protocol Buffers.
http_archive(
name = "rules_proto",
sha256 = "2490dca4f249b8a9a3ab07bd1ba6eca085aaf8e45a734af92aad0c42d9dc7aaf",
strip_prefix = "rules_proto-218ffa7dfa5408492dc86c01ee637614f8695c45",
urls = [
"https://mirror.bazel.build/github.com/bazelbuild/rules_proto/archive/218ffa7dfa5408492dc86c01ee637614f8695c45.tar.gz",
"https://github.com/bazelbuild/rules_proto/archive/218ffa7dfa5408492dc86c01ee637614f8695c45.tar.gz",
],
)
load("@rules_cc//cc:repositories.bzl", "rules_cc_dependencies")
rules_cc_dependencies()
load("@rules_java//java:repositories.bzl", "rules_java_dependencies", "rules_java_toolchains")
rules_java_dependencies()
rules_java_toolchains()
load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies", "rules_proto_toolchains")
rules_proto_dependencies()
rules_proto_toolchains()
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