2024-10-06 07:16:12 +03:00
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# Copyright 2013 The Chromium Authors
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# This is the root build file for GN. GN will start processing by loading this
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# file, and recursively load all dependencies until all dependencies are either
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# resolved or known not to exist (which will cause the build to fail). So if
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# you add a new build file, there must be some path of dependencies from this
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# file to your new one or GN won't know about it.
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import("//build/config/compiler/compiler.gni")
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import("//build/config/cronet/config.gni")
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import("//build/config/dcheck_always_on.gni")
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import("//build/config/features.gni")
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import("//build/config/ios/config.gni")
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import("//build/config/rust.gni")
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import("//build/config/sanitizers/sanitizers.gni")
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import("//build/config/ui.gni")
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import("//build/gn_logs.gni")
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if (is_android) {
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import("//build/config/android/config.gni")
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}
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declare_args() {
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# A list of extra dependencies to add to the root target. This allows a
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# checkout to add additional targets without explicitly changing any checked-
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# in files.
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root_extra_deps = []
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}
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if (is_official_build) {
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# An official (maximally optimized!) component (optimized for build times)
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# build doesn't make sense and usually doesn't work.
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assert(!is_component_build)
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}
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# The `gn_all` target is used to list all of the main targets in the build, so
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# that we can figure out which BUILD.gn files to process, following the process
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# described at the top of this file.
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#
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# Because of the way GN works (again, as described above), there may be targets
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# built by `all` that aren't built by `gn_all`. We always want `all` to build,
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# so there's really never a reason you'd want to build `gn_all` instead of
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# `all`, and no tooling should depend directly on this target. Tools should
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# should depend on either an explicit list of targets, or `all`.
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group("gn_all") {
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testonly = true
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2021-05-16 16:03:12 +03:00
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deps = [
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"//net",
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2024-10-06 07:16:12 +03:00
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]
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}
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if (is_android && !is_cronet_build) {
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group("optimize_gn_gen") {
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deps = [
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# These run expensive scripts in non-default toolchains. Generally, host
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# toolchain targets are loaded in the later part of the run, and the
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# result is they push out the end of generation. By preloading these, the
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# scripts can be parallelized with the rest of the load.
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"//build/config/linux(//build/toolchain/linux:clang_x64)",
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"//build/config/posix(//build/toolchain/linux:clang_x64)",
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# Include x86 toolchains as well since V8 uses them for 32-bit snapshot
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# generation.
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"//build/config/linux(//build/toolchain/linux:clang_x86)",
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"//build/config/posix(//build/toolchain/linux:clang_x86)",
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]
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}
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}
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# Write debug logs to gn_logs.txt.
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_lines = [
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"Generated during 'gn gen' by //BUILD.gn.",
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"",
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] + build_gn_logs
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# GN evaluates each .gn file once per toolchain, so restricting to default
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# toolchain will ensure write_file() is called only once.
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assert(current_toolchain == default_toolchain)
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write_file("$root_build_dir/gn_logs.txt", _lines)
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