81 lines
2.4 KiB
Python
81 lines
2.4 KiB
Python
"""
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Copyright (C) 2021 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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"""A macro to generate table of contents files of symbols from a shared library."""
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CcTocInfo = provider(
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"Information about the table of contents of a shared library",
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fields = {
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"toc": "The single file for the table of contents",
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},
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)
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def _shared_library_toc_impl(ctx):
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so_name = "lib" + ctx.attr.name + ".so"
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toc_name = so_name + ".toc"
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out_file = ctx.actions.declare_file(toc_name)
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d_file = ctx.actions.declare_file(toc_name + ".d")
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ctx.actions.run(
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env = {
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"CLANG_BIN": ctx.executable._readelf.dirname,
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},
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inputs = ctx.files.src,
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tools = [
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ctx.executable._readelf,
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],
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outputs = [out_file, d_file],
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executable = ctx.executable._toc_script,
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arguments = [
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# Only Linux shared libraries for now.
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"--elf",
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"-i",
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ctx.files.src[0].path,
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"-o",
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out_file.path,
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"-d",
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d_file.path,
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],
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)
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return [
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CcTocInfo(toc = out_file),
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DefaultInfo(files = depset([out_file])),
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]
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shared_library_toc = rule(
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implementation = _shared_library_toc_impl,
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attrs = {
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"src": attr.label(
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# TODO(b/217908237): reenable allow_single_file
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# allow_single_file = True,
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mandatory = True,
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),
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"_toc_script": attr.label(
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cfg = "host",
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executable = True,
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allow_single_file = True,
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default = "//build/soong/scripts:toc.sh",
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),
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"_readelf": attr.label(
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cfg = "host",
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executable = True,
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allow_single_file = True,
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default = "//prebuilts/clang/host/linux-x86:llvm-readelf",
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),
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},
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toolchains = ["@bazel_tools//tools/cpp:toolchain_type"],
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)
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