762 lines
29 KiB
Text
762 lines
29 KiB
Text
# Copyright (c) 2013 The Chromium Authors. All rights reserved.
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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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import("//chromium/build/config/clang/clang.gni")
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import("//chromium/build/config/compiler/compiler.gni")
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import("//chromium/build/config/coverage/coverage.gni")
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import("//chromium/build/config/rust.gni")
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import("//chromium/build/config/sanitizers/sanitizers.gni")
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import("//chromium/build/config/v8_target_cpu.gni")
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import("//chromium/build/toolchain/cc_wrapper.gni")
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import("//chromium/build/toolchain/goma.gni")
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import("//chromium/build/toolchain/rbe.gni")
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import("//chromium/build/toolchain/toolchain.gni")
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if (is_nacl) {
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# To keep NaCl variables out of builds that don't include NaCl, all
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# variables defined in nacl/config.gni referenced here should be protected by
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# is_nacl conditions.
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import("//chromium/build/config/nacl/config.gni")
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}
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declare_args() {
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# Enables allowlist generation for IDR_ grit defines seen by the compiler.
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# Currently works only on some platforms and enabled by default for official
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# builds. Requires debug info.
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enable_resource_allowlist_generation =
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is_official_build &&
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# Don't enable for Android-on-Chrome OS.
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(target_os == "android" || target_os == "win")
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}
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# When the arg is set via args.gn, it applies to all toolchains. In order to not
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# hit the assert in grit_rule.gni, explicitly disable for host toolchains.
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if ((is_linux || is_chromeos) && target_os == "android") {
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enable_resource_allowlist_generation = false
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}
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# Ensure enable_resource_allowlist_generation is enabled only when it will work.
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if (enable_resource_allowlist_generation) {
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assert(
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!strip_debug_info,
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"enable_resource_allowlist_generation=true requires strip_debug_info=false")
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assert(
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!is_component_build,
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"enable_resource_allowlist_generation=true requires is_component_build=false")
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assert(
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target_os == "android" || target_os == "win",
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"enable_resource_allowlist_generation=true does not work for target_os=$target_os")
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}
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# This template defines a toolchain for something that works like gcc
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# (including clang).
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#
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# It requires the following variables specifying the executables to run:
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# - ar
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# - cc
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# - cxx
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# - ld
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#
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# Optional parameters that control the tools:
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#
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# - extra_cflags
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# Extra flags to be appended when compiling C files (but not C++ files).
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# - extra_cppflags
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# Extra flags to be appended when compiling both C and C++ files. "CPP"
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# stands for "C PreProcessor" in this context, although it can be
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# used for non-preprocessor flags as well. Not to be confused with
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# "CXX" (which follows).
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# - extra_cxxflags
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# Extra flags to be appended when compiling C++ files (but not C files).
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# - extra_asmflags
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# Extra flags to be appended when compiling assembly.
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# - extra_ldflags
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# Extra flags to be appended when linking
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#
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# - link_outputs
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# The content of this array, if specified, will be added to the list of
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# outputs from the link command. This can be useful in conjunction with
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# the post_link parameter.
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# - use_unstripped_as_runtime_outputs
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# When |strip| is set, mark unstripped executables as runtime deps rather
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# than stripped ones.
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# - post_link
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# The content of this string, if specified, will be run as a separate
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# command following the the link command.
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# - deps
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# Just forwarded to the toolchain definition.
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# - executable_extension
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# If this string is specified it will be used for the file extension
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# for an executable, rather than using no extension; targets will
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# still be able to override the extension using the output_extension
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# variable.
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# - rebuild_define
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# The contents of this string, if specified, will be passed as a #define
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# to the toolchain. It can be used to force recompiles whenever a
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# toolchain is updated.
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# - shlib_extension
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# If this string is specified it will be used for the file extension
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# for a shared library, rather than default value specified in
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# toolchain.gni
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# - strip
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# Location of the strip executable. When specified, strip will be run on
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# all shared libraries and executables as they are built. The pre-stripped
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# artifacts will be put in lib.unstripped/ and exe.unstripped/.
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template("gcc_toolchain") {
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toolchain(target_name) {
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assert(defined(invoker.ar), "gcc_toolchain() must specify a \"ar\" value")
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assert(defined(invoker.cc), "gcc_toolchain() must specify a \"cc\" value")
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assert(defined(invoker.cxx), "gcc_toolchain() must specify a \"cxx\" value")
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assert(defined(invoker.ld), "gcc_toolchain() must specify a \"ld\" value")
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# This define changes when the toolchain changes, forcing a rebuild.
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# Nothing should ever use this define.
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if (defined(invoker.rebuild_define)) {
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rebuild_string = "-D" + invoker.rebuild_define + " "
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} else {
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rebuild_string = ""
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}
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# GN's syntax can't handle more than one scope dereference at once, like
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# "invoker.toolchain_args.foo", so make a temporary to hold the toolchain
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# args so we can do "invoker_toolchain_args.foo".
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assert(defined(invoker.toolchain_args),
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"Toolchains must specify toolchain_args")
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invoker_toolchain_args = invoker.toolchain_args
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assert(defined(invoker_toolchain_args.target_cpu),
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"toolchain_args must specify a target_cpu")
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assert(defined(invoker_toolchain_args.current_os),
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"toolchain_args must specify a current_os")
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# When invoking this toolchain not as the default one, these args will be
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# passed to the build. They are ignored when this is the default toolchain.
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toolchain_args = {
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# Populate toolchain args from the invoker.
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forward_variables_from(invoker_toolchain_args, "*")
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# The host toolchain value computed by the default toolchain's setup
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# needs to be passed through unchanged to all secondary toolchains to
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# ensure that it's always the same, regardless of the values that may be
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# set on those toolchains.
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host_toolchain = host_toolchain
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if (!defined(invoker_toolchain_args.v8_target_cpu)) {
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v8_target_cpu = invoker_toolchain_args.target_cpu
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}
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}
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# When the invoker has explicitly overridden use_remoteexec, use_goma or
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# cc_wrapper in the toolchain args, use those values, otherwise default
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# to the global one. This works because the only reasonable override
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# that toolchains might supply for these values are to force-disable them.
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if (defined(toolchain_args.use_remoteexec)) {
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toolchain_uses_remoteexec = toolchain_args.use_remoteexec
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} else {
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toolchain_uses_remoteexec = use_remoteexec
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}
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if (defined(toolchain_args.use_goma)) {
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toolchain_uses_goma = toolchain_args.use_goma
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} else {
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toolchain_uses_goma = use_goma
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}
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# x86_64-nacl-* is ELF-32 and Goma/RBE won't support ELF-32.
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if (toolchain_uses_goma &&
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get_path_info(invoker.cc, "name") == "x86_64-nacl-gcc") {
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# it will also disable x86_64-nacl-g++ since these are in
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# the same toolchain.
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toolchain_uses_goma = false
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}
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if (defined(toolchain_args.cc_wrapper)) {
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toolchain_cc_wrapper = toolchain_args.cc_wrapper
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} else {
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toolchain_cc_wrapper = cc_wrapper
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}
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assert(!(toolchain_uses_remoteexec && toolchain_uses_goma),
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"Goma and re-client can't be used together.")
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assert(!(toolchain_cc_wrapper != "" && toolchain_uses_remoteexec),
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"re-client and cc_wrapper can't be used together.")
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assert(!(toolchain_cc_wrapper != "" && toolchain_uses_goma),
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"Goma and cc_wrapper can't be used together.")
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# When the invoker has explicitly overridden use_goma or cc_wrapper in the
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# toolchain args, use those values, otherwise default to the global one.
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# This works because the only reasonable override that toolchains might
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# supply for these values are to force-disable them.
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# But if needs_gomacc_path_arg is set in a Chrome OS build, the toolchain
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# wrapper will have picked up gomacc via cmd-line arg. So need to prepend
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# gomacc in that case.
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goma_path = "$goma_dir/gomacc"
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if (toolchain_uses_remoteexec &&
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(!defined(invoker_toolchain_args.needs_gomacc_path_arg) ||
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!invoker_toolchain_args.needs_gomacc_path_arg)) {
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if (defined(toolchain_args.rbe_cc_cfg_file)) {
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toolchain_rbe_cc_cfg_file = toolchain_args.rbe_cc_cfg_file
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} else {
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toolchain_rbe_cc_cfg_file = rbe_cc_cfg_file
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}
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# C/C++ (clang) rewrapper prefix to use when use_remoteexec is true.
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compiler_prefix = "${rbe_bin_dir}/rewrapper -cfg=${toolchain_rbe_cc_cfg_file} -exec_root=${rbe_exec_root} "
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} else if (toolchain_uses_goma &&
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(!defined(invoker_toolchain_args.needs_gomacc_path_arg) ||
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!invoker_toolchain_args.needs_gomacc_path_arg)) {
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compiler_prefix = "${goma_path} "
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if (use_goma_rust) {
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rust_compiler_prefix = compiler_prefix
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}
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} else {
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compiler_prefix = "${toolchain_cc_wrapper} "
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}
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if (use_goma_thin_lto && toolchain_uses_goma && use_thin_lto) {
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# goma_ld.py uses autoninja in an attempt to set a reasonable
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# number of jobs, but this results in too low a value on
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# Chrome OS builders. So we pass in an explicit value.
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link_prefix =
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"$python_path " +
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rebase_path("//tools/clang/scripts/goma_ld.py", root_build_dir) +
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" --gomacc ${goma_path} --jobs 200 -- "
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} else {
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link_prefix = ""
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not_needed([ "goma_path" ])
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}
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# Create a distinct variable for "asm", since coverage runs pass a bunch of
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# flags to clang/clang++ that are nonsensical on assembler runs.
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asm_prefix = compiler_prefix
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# A specific toolchain may wish to avoid coverage instrumentation, so we
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# allow the global "use_clang_coverage" arg to be overridden.
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if (defined(toolchain_args.use_clang_coverage)) {
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toolchain_use_clang_coverage = toolchain_args.use_clang_coverage
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} else {
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toolchain_use_clang_coverage = use_clang_coverage
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}
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# For a coverage build, we use the wrapper script globally so that it can
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# remove coverage cflags from files that should not have them.
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if (toolchain_use_clang_coverage) {
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# "coverage_instrumentation_input_file" is set in args.gn, but it can be
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# overridden by a toolchain config.
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if (defined(toolchain_args.coverage_instrumentation_input_file)) {
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toolchain_coverage_instrumentation_input_file =
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toolchain_args.coverage_instrumentation_input_file
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} else {
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toolchain_coverage_instrumentation_input_file =
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coverage_instrumentation_input_file
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}
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_coverage_wrapper =
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rebase_path("//chromium/build/toolchain/clang_code_coverage_wrapper.py",
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root_build_dir)
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# The wrapper needs to know what OS we target because it uses that to
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# select a list of files that should not be instrumented.
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_coverage_wrapper = _coverage_wrapper + " --target-os=" +
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invoker_toolchain_args.current_os
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# We want to instrument everything if there is no input file set.
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# If there is a file we need to give it to the wrapper script so it can
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# instrument only those files.
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if (toolchain_coverage_instrumentation_input_file != "") {
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_coverage_wrapper =
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_coverage_wrapper + " --files-to-instrument=" +
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rebase_path(toolchain_coverage_instrumentation_input_file,
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root_build_dir)
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}
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compiler_prefix = "$python_path ${_coverage_wrapper} " + compiler_prefix
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}
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cc = compiler_prefix + invoker.cc
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cxx = compiler_prefix + invoker.cxx
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asm = asm_prefix + invoker.cc
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ar = invoker.ar
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ld = link_prefix + invoker.ld
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if (defined(invoker.readelf)) {
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readelf = invoker.readelf
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} else {
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readelf = "readelf"
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}
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if (defined(invoker.nm)) {
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nm = invoker.nm
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} else {
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nm = "nm"
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}
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if (defined(invoker.dwp)) {
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dwp_switch = " --dwp=\"${invoker.dwp}\""
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} else {
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dwp_switch = ""
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}
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if (defined(invoker.shlib_extension)) {
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default_shlib_extension = invoker.shlib_extension
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} else {
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default_shlib_extension = shlib_extension
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}
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if (defined(invoker.default_shlib_subdir)) {
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default_shlib_subdir = invoker.default_shlib_subdir
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} else {
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default_shlib_subdir = ""
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}
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if (defined(invoker.executable_extension)) {
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default_executable_extension = invoker.executable_extension
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} else {
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default_executable_extension = ""
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}
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# Bring these into our scope for string interpolation with default values.
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if (defined(invoker.extra_cflags) && invoker.extra_cflags != "") {
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extra_cflags = " " + invoker.extra_cflags
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} else {
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extra_cflags = ""
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}
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if (defined(invoker.extra_cppflags) && invoker.extra_cppflags != "") {
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extra_cppflags = " " + invoker.extra_cppflags
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} else {
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extra_cppflags = ""
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}
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if (defined(invoker.extra_cxxflags) && invoker.extra_cxxflags != "") {
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extra_cxxflags = " " + invoker.extra_cxxflags
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} else {
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extra_cxxflags = ""
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}
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if (defined(invoker.extra_asmflags) && invoker.extra_asmflags != "") {
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extra_asmflags = " " + invoker.extra_asmflags
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} else {
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extra_asmflags = ""
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}
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if (defined(invoker.extra_ldflags) && invoker.extra_ldflags != "") {
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extra_ldflags = " " + invoker.extra_ldflags
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} else {
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extra_ldflags = ""
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}
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enable_linker_map = defined(invoker.enable_linker_map) &&
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invoker.enable_linker_map && generate_linker_map
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# These library switches can apply to all tools below.
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lib_switch = "-l"
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lib_dir_switch = "-L"
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# Object files go in this directory.
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object_subdir = "{{target_out_dir}}/{{label_name}}"
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tool("cc") {
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depfile = "{{output}}.d"
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precompiled_header_type = "gcc"
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command = "$cc -MMD -MF $depfile ${rebuild_string}{{defines}} {{include_dirs}} {{cflags}} {{cflags_c}}${extra_cppflags}${extra_cflags} -c {{source}} -o {{output}}"
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depsformat = "gcc"
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description = "CC {{output}}"
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outputs = [ "$object_subdir/{{source_name_part}}.o" ]
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}
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tool("cxx") {
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depfile = "{{output}}.d"
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precompiled_header_type = "gcc"
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command = "$cxx -MMD -MF $depfile ${rebuild_string}{{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}}${extra_cppflags}${extra_cxxflags} -c {{source}} -o {{output}}"
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depsformat = "gcc"
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description = "CXX {{output}}"
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outputs = [ "$object_subdir/{{source_name_part}}.o" ]
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}
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tool("asm") {
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# For GCC we can just use the C compiler to compile assembly.
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depfile = "{{output}}.d"
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command = "$asm -MMD -MF $depfile ${rebuild_string}{{defines}} {{include_dirs}} {{asmflags}}${extra_asmflags} -c {{source}} -o {{output}}"
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depsformat = "gcc"
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description = "ASM {{output}}"
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outputs = [ "$object_subdir/{{source_name_part}}.o" ]
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}
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tool("alink") {
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if (current_os == "aix") {
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# AIX does not support either -D (deterministic output) or response
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# files.
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command = "$ar -X64 {{arflags}} -r -c -s {{output}} {{inputs}}"
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} else {
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rspfile = "{{output}}.rsp"
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rspfile_content = "{{inputs}}"
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command = "\"$ar\" {{arflags}} -r -c -s -D {{output}} @\"$rspfile\""
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}
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# Remove the output file first so that ar doesn't try to modify the
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# existing file.
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if (host_os == "win") {
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tool_wrapper_path =
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rebase_path("//chromium/build/toolchain/win/tool_wrapper.py", root_build_dir)
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command = "cmd /c $python_path $tool_wrapper_path delete-file {{output}} && $command"
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} else {
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command = "rm -f {{output}} && $command"
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}
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# Almost all targets build with //build/config/compiler:thin_archive which
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# adds -T to arflags.
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description = "AR {{output}}"
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outputs = [ "{{output_dir}}/{{target_output_name}}{{output_extension}}" ]
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# Shared libraries go in the target out directory by default so we can
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# generate different targets with the same name and not have them collide.
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default_output_dir = "{{target_out_dir}}"
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default_output_extension = ".a"
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output_prefix = "lib"
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}
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tool("solink") {
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soname = "{{target_output_name}}{{output_extension}}" # e.g. "libfoo.so".
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sofile = "{{output_dir}}/$soname" # Possibly including toolchain dir.
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rspfile = sofile + ".rsp"
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pool = "//chromium/build/toolchain:link_pool($default_toolchain)"
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if (defined(invoker.strip)) {
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unstripped_sofile = "{{root_out_dir}}/lib.unstripped/$soname"
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} else {
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unstripped_sofile = sofile
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}
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# These variables are not built into GN but are helpers that
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# implement (1) linking to produce a .so, (2) extracting the symbols
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# from that file (3) if the extracted list differs from the existing
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# .TOC file, overwrite it, otherwise, don't change it.
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tocfile = sofile + ".TOC"
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soname_flag = ""
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if (current_os != "aix") {
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# -soname flag is not available on aix ld
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soname_flag = "-Wl,-soname=\"$soname\""
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}
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link_command = "$ld -shared $soname_flag {{ldflags}}${extra_ldflags} -o \"$unstripped_sofile\" @\"$rspfile\""
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# Generate a map file to be used for binary size analysis.
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# Map file adds ~10% to the link time on a z620.
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# With target_os="android", libchrome.so.map.gz is ~20MB.
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map_switch = ""
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if (enable_linker_map) {
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map_file = "$unstripped_sofile.map.gz"
|
|
map_switch = " --map-file \"$map_file\""
|
|
}
|
|
|
|
assert(defined(readelf), "to solink you must have a readelf")
|
|
assert(defined(nm), "to solink you must have an nm")
|
|
strip_switch = ""
|
|
if (defined(invoker.strip)) {
|
|
strip_switch = "--strip=${invoker.strip} "
|
|
}
|
|
|
|
# This needs a Python script to avoid using a complex shell command
|
|
# requiring sh control structures, pipelines, and POSIX utilities.
|
|
# The host might not have a POSIX shell and utilities (e.g. Windows).
|
|
solink_wrapper =
|
|
rebase_path("//chromium/build/toolchain/gcc_solink_wrapper.py", root_build_dir)
|
|
solink_extra_flags = ""
|
|
if (current_os == "aix") {
|
|
# to be intercepted by solink_wrapper
|
|
solink_extra_flags = "--link-only"
|
|
}
|
|
command = "$python_path \"$solink_wrapper\" --readelf=\"$readelf\" --nm=\"$nm\" $strip_switch$dwp_switch --sofile=\"$unstripped_sofile\" --tocfile=\"$tocfile\"$map_switch --output=\"$sofile\" -- $link_command $solink_extra_flags"
|
|
|
|
if (target_cpu == "mipsel" && is_component_build && is_android) {
|
|
rspfile_content = "-Wl,--start-group -Wl,--whole-archive {{inputs}} {{solibs}} -Wl,--no-whole-archive {{libs}} -Wl,--end-group {{rlibs}}"
|
|
} else if (current_os == "aix") {
|
|
# --whole-archive, --no-whole-archive flags are not available on the aix ld.
|
|
rspfile_content = "{{inputs}} {{solibs}} {{libs}} {{rlibs}}"
|
|
} else {
|
|
rspfile_content = "-Wl,--whole-archive {{inputs}} {{solibs}} -Wl,--no-whole-archive {{libs}} {{rlibs}}"
|
|
}
|
|
|
|
description = "SOLINK $sofile"
|
|
|
|
# Use this for {{output_extension}} expansions unless a target manually
|
|
# overrides it (in which case {{output_extension}} will be what the target
|
|
# specifies).
|
|
default_output_extension = default_shlib_extension
|
|
|
|
default_output_dir = "{{root_out_dir}}${default_shlib_subdir}"
|
|
|
|
output_prefix = "lib"
|
|
|
|
# Since the above commands only updates the .TOC file when it changes, ask
|
|
# Ninja to check if the timestamp actually changed to know if downstream
|
|
# dependencies should be recompiled.
|
|
restat = true
|
|
|
|
# Tell GN about the output files. It will link to the sofile but use the
|
|
# tocfile for dependency management.
|
|
outputs = [
|
|
sofile,
|
|
tocfile,
|
|
]
|
|
if (sofile != unstripped_sofile) {
|
|
outputs += [ unstripped_sofile ]
|
|
if (defined(invoker.use_unstripped_as_runtime_outputs) &&
|
|
invoker.use_unstripped_as_runtime_outputs) {
|
|
runtime_outputs = [ unstripped_sofile ]
|
|
}
|
|
}
|
|
|
|
# Clank build will generate DWP files when Fission is used.
|
|
# Other builds generate DWP files outside of the gn link targets, if at
|
|
# all.
|
|
if (defined(invoker.dwp)) {
|
|
outputs += [ unstripped_sofile + ".dwp" ]
|
|
if (defined(invoker.use_unstripped_as_runtime_outputs) &&
|
|
invoker.use_unstripped_as_runtime_outputs) {
|
|
runtime_outputs += [ unstripped_sofile + ".dwp" ]
|
|
}
|
|
}
|
|
if (defined(map_file)) {
|
|
outputs += [ map_file ]
|
|
}
|
|
link_output = sofile
|
|
depend_output = tocfile
|
|
}
|
|
|
|
tool("solink_module") {
|
|
soname = "{{target_output_name}}{{output_extension}}" # e.g. "libfoo.so".
|
|
sofile = "{{output_dir}}/$soname"
|
|
rspfile = sofile + ".rsp"
|
|
|
|
pool = "//chromium/build/toolchain:link_pool($default_toolchain)"
|
|
|
|
if (defined(invoker.strip)) {
|
|
unstripped_sofile = "{{root_out_dir}}/lib.unstripped/$soname"
|
|
} else {
|
|
unstripped_sofile = sofile
|
|
}
|
|
|
|
soname_flag = ""
|
|
whole_archive_flag = ""
|
|
no_whole_archive_flag = ""
|
|
if (current_os != "aix") {
|
|
# -soname, --whole-archive, --no-whole-archive flags are not available on aix ld
|
|
soname_flag = "-Wl,-soname=\"$soname\""
|
|
whole_archive_flag = "-Wl,--whole-archive"
|
|
no_whole_archive_flag = "-Wl,--no-whole-archive"
|
|
}
|
|
command = "$ld -shared {{ldflags}}${extra_ldflags} -o \"$unstripped_sofile\" $soname_flag @\"$rspfile\""
|
|
|
|
if (defined(invoker.strip)) {
|
|
strip_command = "${invoker.strip} -o \"$sofile\" \"$unstripped_sofile\""
|
|
command += " && " + strip_command
|
|
}
|
|
rspfile_content = "$whole_archive_flag {{inputs}} {{solibs}} $no_whole_archive_flag {{libs}} {{rlibs}}"
|
|
|
|
description = "SOLINK_MODULE $sofile"
|
|
|
|
# Use this for {{output_extension}} expansions unless a target manually
|
|
# overrides it (in which case {{output_extension}} will be what the target
|
|
# specifies).
|
|
if (defined(invoker.loadable_module_extension)) {
|
|
default_output_extension = invoker.loadable_module_extension
|
|
} else {
|
|
default_output_extension = default_shlib_extension
|
|
}
|
|
|
|
default_output_dir = "{{root_out_dir}}${default_shlib_subdir}"
|
|
|
|
output_prefix = "lib"
|
|
|
|
outputs = [ sofile ]
|
|
if (sofile != unstripped_sofile) {
|
|
outputs += [ unstripped_sofile ]
|
|
if (defined(invoker.use_unstripped_as_runtime_outputs) &&
|
|
invoker.use_unstripped_as_runtime_outputs) {
|
|
runtime_outputs = [ unstripped_sofile ]
|
|
}
|
|
}
|
|
}
|
|
|
|
tool("link") {
|
|
exename = "{{target_output_name}}{{output_extension}}"
|
|
outfile = "{{output_dir}}/$exename"
|
|
rspfile = "$outfile.rsp"
|
|
unstripped_outfile = outfile
|
|
|
|
pool = "//chromium/build/toolchain:link_pool($default_toolchain)"
|
|
|
|
# Use this for {{output_extension}} expansions unless a target manually
|
|
# overrides it (in which case {{output_extension}} will be what the target
|
|
# specifies).
|
|
default_output_extension = default_executable_extension
|
|
|
|
default_output_dir = "{{root_out_dir}}"
|
|
|
|
if (defined(invoker.strip)) {
|
|
unstripped_outfile = "{{root_out_dir}}/exe.unstripped/$exename"
|
|
}
|
|
|
|
start_group_flag = ""
|
|
end_group_flag = ""
|
|
if (current_os != "aix") {
|
|
# the "--start-group .. --end-group" feature isn't available on the aix ld.
|
|
start_group_flag = "-Wl,--start-group"
|
|
end_group_flag = "-Wl,--end-group "
|
|
}
|
|
link_command = "$ld {{ldflags}}${extra_ldflags} -o \"$unstripped_outfile\" $start_group_flag @\"$rspfile\" {{solibs}} $end_group_flag {{libs}}"
|
|
|
|
# Generate a map file to be used for binary size analysis.
|
|
# Map file adds ~10% to the link time on a z620.
|
|
# With target_os="android", libchrome.so.map.gz is ~20MB.
|
|
map_switch = ""
|
|
if (enable_linker_map) {
|
|
map_file = "$unstripped_outfile.map.gz"
|
|
map_switch = " --map-file \"$map_file\""
|
|
}
|
|
|
|
strip_switch = ""
|
|
if (defined(invoker.strip)) {
|
|
strip_switch = " --strip=\"${invoker.strip}\" --unstripped-file=\"$unstripped_outfile\""
|
|
}
|
|
|
|
link_wrapper =
|
|
rebase_path("//chromium/build/toolchain/gcc_link_wrapper.py", root_build_dir)
|
|
command = "$python_path \"$link_wrapper\" --output=\"$outfile\"$strip_switch$map_switch$dwp_switch -- $link_command"
|
|
|
|
description = "LINK $outfile"
|
|
rspfile_content = "{{inputs}} {{rlibs}}"
|
|
outputs = [ outfile ]
|
|
if (outfile != unstripped_outfile) {
|
|
outputs += [ unstripped_outfile ]
|
|
if (defined(invoker.use_unstripped_as_runtime_outputs) &&
|
|
invoker.use_unstripped_as_runtime_outputs) {
|
|
runtime_outputs = [ unstripped_outfile ]
|
|
}
|
|
}
|
|
|
|
# Clank build will generate DWP files when Fission is used.
|
|
# Other builds generate DWP files outside of the gn link targets, if at
|
|
# all.
|
|
if (defined(invoker.dwp)) {
|
|
outputs += [ unstripped_outfile + ".dwp" ]
|
|
if (defined(invoker.use_unstripped_as_runtime_outputs) &&
|
|
invoker.use_unstripped_as_runtime_outputs) {
|
|
runtime_outputs += [ unstripped_outfile + ".dwp" ]
|
|
}
|
|
}
|
|
if (defined(invoker.link_outputs)) {
|
|
outputs += invoker.link_outputs
|
|
}
|
|
if (defined(map_file)) {
|
|
outputs += [ map_file ]
|
|
}
|
|
}
|
|
|
|
# These two are really entirely generic, but have to be repeated in
|
|
# each toolchain because GN doesn't allow a template to be used here.
|
|
# See //build/toolchain/toolchain.gni for details.
|
|
tool("stamp") {
|
|
command = stamp_command
|
|
description = stamp_description
|
|
}
|
|
tool("copy") {
|
|
command = copy_command
|
|
description = copy_description
|
|
}
|
|
|
|
tool("action") {
|
|
pool = "//chromium/build/toolchain:action_pool($default_toolchain)"
|
|
}
|
|
|
|
if (toolchain_has_rust) {
|
|
rustc = ""
|
|
if (defined(rust_compiler_prefix)) {
|
|
rustc += rust_compiler_prefix
|
|
}
|
|
rustc += rust_prefix
|
|
rustc += "rustc"
|
|
|
|
# RSP files not used due to https://bugs.chromium.org/p/gn/issues/detail?id=249
|
|
tool("rust_staticlib") {
|
|
rust_outfile = "{{target_out_dir}}/{{crate_name}}.a"
|
|
depfile = "{{output}}.d"
|
|
command = "$rustc $rustc_common_args --emit=dep-info=$depfile,link -Clinker=$ld -o $rust_outfile"
|
|
description = "RUST $rust_outfile"
|
|
outputs = [ rust_outfile ]
|
|
}
|
|
|
|
tool("rust_rlib") {
|
|
rust_outfile = "{{target_out_dir}}/lib{{crate_name}}.rlib"
|
|
depfile = "{{output}}.d"
|
|
command = "$rustc $rustc_common_args --emit=dep-info=$depfile,link -Clinker=$ld -o $rust_outfile"
|
|
description = "RUST $rust_outfile"
|
|
outputs = [ rust_outfile ]
|
|
}
|
|
|
|
if (rustc_can_link) {
|
|
tool("rust_bin") {
|
|
rust_outfile = "{{root_out_dir}}/{{crate_name}}"
|
|
depfile = "{{output}}.d"
|
|
command = "$rustc $rustc_common_args --emit=dep-info=$depfile,link -Clinker=$ld -o $rust_outfile"
|
|
description = "RUST $rust_outfile"
|
|
outputs = [ rust_outfile ]
|
|
}
|
|
|
|
tool("rust_cdylib") {
|
|
rust_outfile = "{{target_out_dir}}/lib{{crate_name}}.so"
|
|
depfile = "{{output}}.d"
|
|
command = "$rustc $rustc_common_args --emit=dep-info=$depfile,link -Clinker=$ld -o $rust_outfile"
|
|
description = "RUST $rust_outfile"
|
|
outputs = [ rust_outfile ]
|
|
}
|
|
|
|
tool("rust_macro") {
|
|
rust_outfile = "{{target_out_dir}}/lib{{crate_name}}.so"
|
|
depfile = "{{output}}.d"
|
|
command = "$rustc $rustc_common_args --emit=dep-info=$depfile,link -Clinker=$ld -o $rust_outfile"
|
|
description = "RUST $rust_outfile"
|
|
outputs = [ rust_outfile ]
|
|
}
|
|
}
|
|
}
|
|
|
|
forward_variables_from(invoker, [ "deps" ])
|
|
}
|
|
}
|
|
|
|
# This is a shorthand for gcc_toolchain instances based on the Chromium-built
|
|
# version of Clang. Only the toolchain_cpu and toolchain_os variables need to
|
|
# be specified by the invoker, and optionally toolprefix if it's a
|
|
# cross-compile case. Note that for a cross-compile case this toolchain
|
|
# requires a config to pass the appropriate -target option, or else it will
|
|
# actually just be doing a native compile. The invoker can optionally override
|
|
# use_gold too.
|
|
template("clang_toolchain") {
|
|
if (defined(invoker.toolprefix)) {
|
|
toolprefix = invoker.toolprefix
|
|
} else {
|
|
toolprefix = ""
|
|
}
|
|
|
|
gcc_toolchain(target_name) {
|
|
prefix = rebase_path("$clang_base_path/bin", root_build_dir)
|
|
cc = "$prefix/clang"
|
|
cxx = "$prefix/clang++"
|
|
ld = cxx
|
|
readelf = "${toolprefix}readelf"
|
|
ar = "${prefix}/llvm-ar"
|
|
nm = "${prefix}/llvm-nm"
|
|
|
|
forward_variables_from(invoker,
|
|
[
|
|
"strip",
|
|
"default_shlib_subdir",
|
|
"enable_linker_map",
|
|
"use_unstripped_as_runtime_outputs",
|
|
])
|
|
|
|
toolchain_args = {
|
|
if (defined(invoker.toolchain_args)) {
|
|
forward_variables_from(invoker.toolchain_args, "*")
|
|
}
|
|
is_clang = true
|
|
}
|
|
}
|
|
}
|