Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
93 lines
3.4 KiB
93 lines
3.4 KiB
# Copyright (c) 2009-2021, Google LLC |
|
# All rights reserved. |
|
# |
|
# Redistribution and use in source and binary forms, with or without |
|
# modification, are permitted provided that the following conditions are met: |
|
# * Redistributions of source code must retain the above copyright |
|
# notice, this list of conditions and the following disclaimer. |
|
# * Redistributions in binary form must reproduce the above copyright |
|
# notice, this list of conditions and the following disclaimer in the |
|
# documentation and/or other materials provided with the distribution. |
|
# * Neither the name of Google LLC nor the |
|
# names of its contributors may be used to endorse or promote products |
|
# derived from this software without specific prior written permission. |
|
# |
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
|
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
|
# DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY |
|
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
|
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
|
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
|
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
|
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
|
"""Repository rule for using Python 3.x headers from the system.""" |
|
|
|
_build_file = """ |
|
load("@bazel_tools//tools/python:toolchain.bzl", "py_runtime_pair") |
|
cc_library( |
|
name = "python_headers", |
|
hdrs = glob(["python/**/*.h"]), |
|
includes = ["python"], |
|
visibility = ["//visibility:public"], |
|
) |
|
|
|
py_runtime( |
|
name = "py3_runtime", |
|
interpreter_path = "%s", |
|
python_version = "PY3", |
|
) |
|
|
|
py_runtime_pair( |
|
name = "runtime_pair", |
|
py3_runtime = ":py3_runtime", |
|
) |
|
|
|
toolchain( |
|
name = "python_toolchain", |
|
toolchain = ":runtime_pair", |
|
toolchain_type = "@rules_python//python:toolchain_type", |
|
) |
|
""" |
|
|
|
_build_defs_file = """ |
|
EXT_SUFFIX = "%s" |
|
""" |
|
|
|
def _get_config_var(repository_ctx, name): |
|
py_program = "import sysconfig; print(sysconfig.get_config_var('%s'), end='')" |
|
result = repository_ctx.execute(["python3", "-c", py_program % (name)]) |
|
if result.return_code != 0: |
|
fail("No python3 executable available on the system") |
|
return result.stdout |
|
|
|
def _python_headers_impl(repository_ctx): |
|
path = _get_config_var(repository_ctx, "INCLUDEPY") |
|
ext_suffix = _get_config_var(repository_ctx, "EXT_SUFFIX") |
|
repository_ctx.symlink(path, "python") |
|
python3 = repository_ctx.which("python3") |
|
repository_ctx.file("BUILD.bazel", _build_file % python3) |
|
repository_ctx.file("build_defs.bzl", _build_defs_file % ext_suffix) |
|
|
|
# The system_python() repository rule exposes Python headers from the system. |
|
# |
|
# In WORKSPACE: |
|
# system_python( |
|
# name = "system_python_repo", |
|
# ) |
|
# |
|
# This repository exposes a single rule that you can depend on from BUILD: |
|
# cc_library( |
|
# name = "foobar", |
|
# srcs = ["foobar.cc"], |
|
# deps = ["@system_python_repo//:python_headers"], |
|
# ) |
|
# |
|
# The headers should correspond to the version of python obtained by running |
|
# the `python3` command on the system. |
|
system_python = repository_rule( |
|
implementation = _python_headers_impl, |
|
local = True, |
|
)
|
|
|