88 lines
3.1 KiB
Python
88 lines
3.1 KiB
Python
"""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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