从源代码构建 gRPC C++

Question

I am trying to build gRPC c++ from source from Build gRPC C++ I have already installed bazel. Though when I tried to build I am seeing following error.

$ bazel build :all
Starting local Bazel server and connecting to it...
ERROR: /home/bigz/.cache/bazel/_bazel_bigz/a68d37101a3d172c639dd67a1941f719/external/io_bazel_rules_python/python/pip.bzl:39:25: Traceback (most recent 
call last):
        File "/home/bigz/.cache/bazel/_bazel_bigz/a68d37101a3d172c639dd67a1941f719/external/io_bazel_rules_python/python/pip.bzl", line 37
                repository_rule(<2 more arguments>)
        File "/home/bigz/.cache/bazel/_bazel_bigz/a68d37101a3d172c639dd67a1941f719/external/io_bazel_rules_python/python/pip.bzl", line 39, in repositor
y_rule
                attr.label(allow_files = True, <2 more arguments>)
'single_file' is no longer supported. use allow_single_file instead. You can use --incompatible_disable_deprecated_attr_params=false to temporarily disable th
is check.
ERROR: error loading package '': Extension file 'python/pip.bzl' has errors
ERROR: error loading package '': Extension file 'python/pip.bzl' has errors
INFO: Elapsed time: 7.505s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (0 packages loaded)

Could someone point what I am missing here.

When I tried to run bazel info , I am getting following error.

$ bazel info --incompatible_disable_deprecated_attr_params=false
ERROR: /home/bigz/.cache/bazel/_bazel_bigz/a68d37101a3d172c639dd67a1941f719/external/org_pubref_rules_protobuf/protobuf/internal/proto_compile.bzl:771:21: name 'FileType' is not defined
ERROR: error loading package '': in /home/bigz/.cache/bazel/_bazel_bigz/a68d37101a3d172c639dd67a1941f719/external/org_pubref_rules_protobuf/python/rules.bzl: in /home/bigz/.cache/bazel/_bazel_bigz/a68d37101a3d172c639dd67a1941f719/external/org_pubref_rules_protobuf/cpp/rules.bzl: in /home/bigz/.cache/bazel/_bazel_bigz/a68d37101a3d172c639dd67a1941f719/external/org_pubref_rules_protobuf/protobuf/rules.bzl: Extension 'protobuf/internal/proto_compile.bzl' has errors

Though bazel --version shows as bazel 2.0.0 .

$ bazel --version
bazel 2.0.0

The latest commit of gRPC is 9dfbd34f5c0b20bd77658c73c59b9a3e4e8f4e14

$ git log -1
commit 9dfbd34f5c0b20bd77658c73c59b9a3e4e8f4e14 (HEAD, tag: v1.20.0)
Merge: 1b488f8361 ae72bf76b3
Author: Lidi Zheng <scallopsky@gmail.com>
Date:   Mon Apr 15 15:38:24 2019 -0700

    Merge pull request #18760 from lidizheng/v1.20.x

    Bump version to v1.20.0

Answer 1

The commit of grpc you are trying to build is not compatible with the version of bazel you have installed (2.0.0).

The commit 9dfbd34f5c0b20bd77658c73c59b9a3e4e8f4e14 is quite old (15 April 19), where the HEAD of that repo (at the time of writing this) is at eba60d8dbe4099c34b8097b2c89998d4484740ac , which now in BUILDING.md shows you need at least version 1.0.0 (there is a bazel wrapper at tools/bazel that will intercept and use 1.0.0 anyway)

For your specific commit however, trying different versions, I was able to build :all label with bazel version 0.20.0

I'd recommend trying bazelisk . You can add it to your PATH, add a .bazelversion file to the repository and bazelisk will take care of downloading the required bazel version.