Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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87 lines
3.1 KiB
87 lines
3.1 KiB
"""A function to compile C/C++ code, like cc_library() but from Starlark.""" |
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# begin:google_only |
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# load("@bazel_tools//tools/cpp:toolchain_utils.bzl", "find_cpp_toolchain", "use_cpp_toolchain") |
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# |
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# def upb_use_cpp_toolchain(): |
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# return [ |
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# config_common.toolchain_type( |
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# "@bazel_tools//tools/cpp:cc_runtimes_toolchain_type", |
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# mandatory = False, |
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# ), |
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# ] + use_cpp_toolchain() |
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# |
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# end:google_only |
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# begin:github_only |
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# Compatibility code for Bazel 4.x. Remove this when we drop support for Bazel 4.x. |
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load("@bazel_tools//tools/cpp:toolchain_utils.bzl", "find_cpp_toolchain") |
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def upb_use_cpp_toolchain(): |
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return ["@bazel_tools//tools/cpp:toolchain_type"] |
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# end:github_only |
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def cc_library_func(ctx, name, hdrs, srcs, copts, includes, dep_ccinfos): |
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"""Like cc_library(), but callable from rules. |
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Args: |
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ctx: Rule context. |
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name: Unique name used to generate output files. |
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hdrs: Public headers that can be #included from other rules. |
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srcs: C/C++ source files. |
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copts: Additional options for cc compilation. |
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includes: Additional include paths. |
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dep_ccinfos: CcInfo providers of dependencies we should build/link against. |
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Returns: |
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CcInfo provider for this compilation. |
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""" |
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# begin:google_only |
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# cc_runtimes_toolchain = ctx.toolchains["@bazel_tools//tools/cpp:cc_runtimes_toolchain_type"] |
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# if cc_runtimes_toolchain: |
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# dep_ccinfos += [ |
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# target[CcInfo] |
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# for target in cc_runtimes_toolchain.cc_runtimes_info.runtimes |
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# ] |
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# |
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# end:google_only |
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compilation_contexts = [info.compilation_context for info in dep_ccinfos] |
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linking_contexts = [info.linking_context for info in dep_ccinfos] |
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toolchain = find_cpp_toolchain(ctx) |
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feature_configuration = cc_common.configure_features( |
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ctx = ctx, |
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cc_toolchain = toolchain, |
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requested_features = ctx.features, |
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unsupported_features = ctx.disabled_features, |
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) |
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(compilation_context, compilation_outputs) = cc_common.compile( |
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actions = ctx.actions, |
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feature_configuration = feature_configuration, |
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cc_toolchain = toolchain, |
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name = name, |
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srcs = srcs, |
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includes = includes, |
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public_hdrs = hdrs, |
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user_compile_flags = copts, |
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compilation_contexts = compilation_contexts, |
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) |
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# buildifier: disable=unused-variable |
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(linking_context, linking_outputs) = cc_common.create_linking_context_from_compilation_outputs( |
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actions = ctx.actions, |
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name = name, |
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feature_configuration = feature_configuration, |
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cc_toolchain = toolchain, |
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compilation_outputs = compilation_outputs, |
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linking_contexts = linking_contexts, |
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disallow_dynamic_library = cc_common.is_enabled(feature_configuration = feature_configuration, feature_name = "targets_windows") or not cc_common.is_enabled(feature_configuration = feature_configuration, feature_name = "supports_dynamic_linker"), |
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) |
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return CcInfo( |
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compilation_context = compilation_context, |
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linking_context = linking_context, |
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)
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