| # -*- bazel-starlark -*- |
| # Copyright 2023 The Chromium Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| """Siso configuration for clang.""" |
| |
| load("@builtin//path.star", "path") |
| load("@builtin//struct.star", "module") |
| load("./ar.star", "ar") |
| load("./config.star", "config") |
| load("./mac_sdk.star", "mac_sdk") |
| load("./win_sdk.star", "win_sdk") |
| |
| def __filegroups(ctx): |
| fg = { |
| "third_party/libc++/src/include:headers": { |
| "type": "glob", |
| "includes": ["*"], |
| # can't use "*.h", because c++ headers have no extension. |
| }, |
| "third_party/libc++abi/src/include:headers": { |
| "type": "glob", |
| "includes": ["*.h"], |
| }, |
| # vendor provided headers for libc++. |
| "buildtools/third_party/libc++:headers": { |
| "type": "glob", |
| "includes": [ |
| "__*", |
| ], |
| }, |
| |
| # toolchain root |
| # :headers for compiling |
| "third_party/llvm-build/Release+Asserts:headers": { |
| "type": "glob", |
| "includes": [ |
| "*.h", |
| "*.modulemap", |
| "bin/clang", |
| "bin/clang++", |
| "bin/clang-*", # clang-cl, clang-<ver> |
| "*_ignorelist.txt", |
| # https://crbug.com/335997052 |
| "clang_rt.profile*.lib", |
| ], |
| }, |
| "third_party/cronet_android_mainline_clang/linux-amd64:headers": { |
| "type": "glob", |
| "includes": [ |
| "*.h", |
| "*.modulemap", |
| "bin/clang*", |
| ], |
| }, |
| "third_party/cronet_android_mainline_clang/linux-amd64:link": { |
| "type": "glob", |
| "includes": [ |
| "bin/clang*", |
| "bin/ld.lld", |
| "bin/lld", |
| "bin/llvm-nm", |
| "bin/llvm-objcopy", |
| "bin/llvm-readelf", |
| "bin/llvm-readobj", |
| "bin/llvm-strip", |
| "*.so", |
| "*.so.*", |
| "*.a", |
| ], |
| }, |
| } |
| if win_sdk.enabled(ctx): |
| fg.update(win_sdk.filegroups(ctx)) |
| if mac_sdk.enabled(ctx): |
| fg.update(mac_sdk.filegroups(ctx)) |
| return fg |
| |
| __input_deps = { |
| # need this because we use |
| # third_party/libc++/src/include:headers, |
| # but scandeps doesn't scan `__config` file, which uses |
| # `#include <__config_site>` |
| # also need `__assertion_handler`. b/321171148 |
| "third_party/libc++/src/include": [ |
| "buildtools/third_party/libc++:headers", |
| ], |
| "third_party/llvm-build/Release+Asserts/bin/clang": [ |
| "build/config/unsafe_buffers_paths.txt", |
| ], |
| "third_party/llvm-build/Release+Asserts/bin/clang++": [ |
| "build/config/unsafe_buffers_paths.txt", |
| ], |
| "third_party/llvm-build/Release+Asserts/bin/clang-cl": [ |
| "build/config/unsafe_buffers_paths.txt", |
| ], |
| "third_party/llvm-build/Release+Asserts/bin/clang-cl.exe": [ |
| "build/config/unsafe_buffers_paths.txt", |
| ], |
| "third_party/llvm-build/Release+Asserts/bin/lld-link": [ |
| "build/config/c++/libc++.natvis", |
| "build/win/as_invoker.manifest", |
| "build/win/common_controls.manifest", |
| "build/win/compatibility.manifest", |
| "build/win/require_administrator.manifest", |
| "build/win/segment_heap.manifest", |
| "remoting/host/win/dpi_aware.manifest", |
| "third_party/llvm-build/Release+Asserts/bin/lld", |
| "tools/win/DebugVisualizers/blink.natvis", |
| "tools/win/DebugVisualizers/chrome.natvis", |
| ], |
| "third_party/llvm-build/Release+Asserts/bin/lld-link.exe": [ |
| "build/config/c++/libc++.natvis", |
| "build/win/as_invoker.manifest", |
| "build/win/common_controls.manifest", |
| "build/win/compatibility.manifest", |
| "build/win/require_administrator.manifest", |
| "build/win/segment_heap.manifest", |
| "remoting/host/win/dpi_aware.manifest", |
| "third_party/llvm-build/Release+Asserts/bin/lld.exe", |
| "tools/win/DebugVisualizers/blink.natvis", |
| "tools/win/DebugVisualizers/chrome.natvis", |
| ], |
| "build/toolchain/gcc_solink_wrapper.py": [ |
| "build/toolchain/whole_archive.py", |
| "build/toolchain/wrapper_utils.py", |
| ], |
| "build/toolchain/gcc_solink_wrapper.py:link": [ |
| "build/toolchain/gcc_solink_wrapper.py", |
| "build/toolchain/whole_archive.py", |
| "build/toolchain/wrapper_utils.py", |
| ], |
| "build/toolchain/gcc_link_wrapper.py": [ |
| "build/toolchain/whole_archive.py", |
| "build/toolchain/wrapper_utils.py", |
| ], |
| "build/toolchain/gcc_link_wrapper.py:link": [ |
| "build/toolchain/gcc_link_wrapper.py", |
| "build/toolchain/whole_archive.py", |
| "build/toolchain/wrapper_utils.py", |
| ], |
| "build/toolchain/apple/linker_driver.py:link": [ |
| "build/toolchain/apple/linker_driver.py", |
| "build/toolchain/whole_archive.py", |
| ], |
| "build/toolchain/apple/solink_driver.py:link": [ |
| "build/toolchain/apple/linker_driver.py", |
| "build/toolchain/apple/solink_driver.py", |
| "build/toolchain/whole_archive.py", |
| ], |
| } |
| |
| def __lld_link(ctx, cmd): |
| # Replace thin archives with /start-lib ... /end-lib in rsp file. |
| new_lines = [] |
| for line in str(cmd.rspfile_content).split("\n"): |
| new_elems = [] |
| for elem in line.split(" "): |
| # Parse only .lib files. |
| if not elem.endswith(".lib"): |
| new_elems.append(elem) |
| continue |
| |
| # Parse files under the out dir. |
| fname = ctx.fs.canonpath(elem) |
| if not ctx.fs.exists(fname): |
| new_elems.append(elem) |
| continue |
| |
| # Check if the library is generated or not. |
| # The source libs are not under the build dir. |
| build_dir = ctx.fs.canonpath("./") |
| if path.rel(build_dir, fname).startswith("../../"): |
| new_elems.append(elem) |
| continue |
| |
| ents = ar.entries(ctx, fname, build_dir) |
| if not ents: |
| new_elems.append(elem) |
| continue |
| |
| new_elems.append("-start-lib") |
| new_elems.extend(ents) |
| new_elems.append("-end-lib") |
| new_lines.append(" ".join(new_elems)) |
| |
| ctx.actions.fix(rspfile_content = "\n".join(new_lines)) |
| |
| def __thin_archive(ctx, cmd): |
| # TODO: This handler can be used despite remote linking? |
| if not config.get(ctx, "remote-link"): |
| return |
| if "lld-link" in cmd.args[0]: |
| if not "/llvmlibthin" in cmd.args: |
| print("not thin archive") |
| return |
| else: |
| # check command line to see "-T" and "-S". |
| # rm -f obj/third_party/angle/libangle_common.a && "../../third_party/llvm-build/Release+Asserts/bin/llvm-ar" -T -S -r -c -D obj/third_party/angle/libangle_common.a @"obj/third_party/angle/libangle_common.a.rsp" |
| if not ("-T" in cmd.args[-1] and "-S" in cmd.args[-1]): |
| print("not thin archive without symbol table") |
| return |
| |
| # create thin archive without symbol table by handler. |
| rspfile_content = str(cmd.rspfile_content) |
| inputs = [] |
| for line in rspfile_content.split("\n"): |
| for fname in line.split(" "): |
| inputs.append(ctx.fs.canonpath(fname)) |
| data = ar.create(ctx, path.dir(cmd.outputs[0]), inputs) |
| ctx.actions.write(cmd.outputs[0], data) |
| ctx.actions.exit(exit_status = 0) |
| |
| __handlers = { |
| "lld_link": __lld_link, |
| "lld_thin_archive": __thin_archive, |
| } |
| |
| clang_all = module( |
| "clang_all", |
| filegroups = __filegroups, |
| input_deps = __input_deps, |
| handlers = __handlers, |
| ) |
