832 lines
34 KiB
Plaintext
832 lines
34 KiB
Plaintext
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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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# TODO(brettw) Use "gcc_toolchain.gni" like the Linux toolchains. This requires
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# some enhancements since the commands on Mac are slightly different than on
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# Linux.
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import("//build/config/apple/symbols.gni")
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import("//build/config/clang/clang.gni")
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import("//build/config/compiler/compiler.gni")
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import("//build/config/coverage/coverage.gni")
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import("//build/config/rust.gni")
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import("//build/toolchain/cc_wrapper.gni")
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import("//build/toolchain/goma.gni")
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import("//build/toolchain/rbe.gni")
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import("//build/toolchain/toolchain.gni")
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import("//build_overrides/build.gni")
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# TODO(crbug.com/1370527): This import is required to detect whether the
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# build is for the catalyst environment in order to disable the hermetic
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# swift compiler (as it does not include support for catalyst). Remove it
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# once the support is available.
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if (is_ios) {
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import("//build/config/ios/config.gni")
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}
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assert((target_os == "ios" && host_os == "mac") || host_os != "win")
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declare_args() {
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# This controls whether whole module optimization is enabled when building
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# Swift modules. If enabled, the compiler will compile the module as one
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# unit, generating just one single object file. Otherwise, it will generate
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# one object file per .swift file. If unspecified, will default to "true"
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# for official builds, and "false" for all other builds.
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swift_whole_module_optimization = -1
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# If unspecified, will use the toolchain downloaded via deps.
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swift_toolchain_path = -1
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}
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# TODO(crbug.com/1370527): Remove this and replace with `build_with_chromium`
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# once the support for catalyst is available in the hermetic swift compiler.
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_can_use_hermetic_swift =
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build_with_chromium && is_ios && target_environment != "catalyst"
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if (swift_toolchain_path == -1) {
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if (_can_use_hermetic_swift) {
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# Version of the hermetic compiler. Needs to be updated when a new version of
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# the compiler is rolled to ensure that all outputs are regenerated. It must
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# be kept in sync with the `version` of `third_party/swift-toolchain` in
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# //DEPS.
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swiftc_version = "swift-5.7-release"
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# Use the hermetic swift toolchain.
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swift_toolchain_path = "//third_party/swift-toolchain/"
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} else {
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swift_toolchain_path = ""
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}
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}
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if (swift_whole_module_optimization == -1) {
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swift_whole_module_optimization = is_official_build
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}
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# When implementing tools using Python scripts, a TOOL_VERSION=N env
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# variable is placed in front of the command. The N should be incremented
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# whenever the script is changed, so that the build system rebuilds all
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# edges that utilize the script. Ideally this should be changed to use
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# proper input-dirty checking, but that could be expensive. Instead, use a
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# script to get the tool scripts' modification time to use as the version.
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# This won't cause a re-generation of GN files when the tool script changes
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# but it will cause edges to be marked as dirty if the ninja files are
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# regenerated. See https://crbug.com/619083 for details. A proper fix
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# would be to have inputs to tools (https://crbug.com/621119).
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tool_versions =
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exec_script("get_tool_mtime.py",
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rebase_path([
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"//build/toolchain/apple/filter_libtool.py",
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"//build/toolchain/apple/linker_driver.py",
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"//build/toolchain/ios/compile_xcassets.py",
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"//build/toolchain/ios/swiftc.py",
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],
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root_build_dir),
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"trim scope")
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# Shared toolchain definition. Invocations should set current_os to set the
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# build args in this definition. This is titled "single_apple_toolchain"
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# because it makes exactly one toolchain. Callers will normally want to
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# invoke instead "apple_toolchain" which may make an additional toolchain
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# without sanitizers.
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template("single_apple_toolchain") {
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toolchain(target_name) {
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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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assert(defined(invoker.toolchain_args),
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"Toolchains must declare toolchain_args")
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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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# Similarly for the host toolchain which can be used to make .dylibs
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# that will successfully load into prebuilt tools.
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host_toolchain_no_sanitizers = host_toolchain_no_sanitizers
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}
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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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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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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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if (defined(toolchain_args.use_lld)) {
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toolchain_uses_lld = toolchain_args.use_lld
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} else {
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toolchain_uses_lld = use_lld
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}
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# The value of all global variables (such as `is_component_build`) is the
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# one from the default toolchain when evaluating a secondary toolchain
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# (see https://crbug.com/gn/286). This mean that the value may change when
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# evaluating target/configs in the new toolchain if the variable default
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# value depends on variable set in `toolchain_args`.
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#
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# For this reason, "ios" needs to override `is_component_build` as its
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# default value depends on `current_os`. Use the overridden value if it
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# is set in `toolchain_args`.
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if (defined(toolchain_args.is_component_build)) {
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toolchain_is_component_build = toolchain_args.is_component_build
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} else {
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toolchain_is_component_build = is_component_build
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}
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prefix = rebase_path("$clang_base_path/bin/", root_build_dir)
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_cc = "${prefix}clang"
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_cxx = "${prefix}clang++"
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swiftmodule_switch = "-Wl,-add_ast_path,"
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# Compute the compiler prefix.
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if (toolchain_uses_remoteexec) {
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if (defined(toolchain_args.rbe_cc_cfg_file)) {
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toolchain_rbe_cc_cfg_file = toolchain_args.rbe_cc_cfg_file
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} else {
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toolchain_rbe_cc_cfg_file = rbe_cc_cfg_file
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}
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# C/C++ (clang) rewrapper prefix to use when use_remoteexec is true.
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compiler_prefix = "${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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assert(toolchain_cc_wrapper == "",
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"Goma and cc_wrapper can't be used together.")
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compiler_prefix = "$goma_dir/gomacc "
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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 if (toolchain_cc_wrapper != "") {
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compiler_prefix = toolchain_cc_wrapper + " "
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} else {
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compiler_prefix = ""
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}
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cc = compiler_prefix + _cc
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cxx = compiler_prefix + _cxx
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ld = _cxx
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# Set the explicit search path for clang++ so it uses the right linker
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# binary.
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if (!toolchain_uses_lld) {
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ld += " -B " + invoker.bin_path
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}
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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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_use_clang_coverage_wrapper =
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toolchain_coverage_instrumentation_input_file != ""
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if (_use_clang_coverage_wrapper) {
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_coverage_wrapper =
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rebase_path("//build/toolchain/clang_code_coverage_wrapper.py",
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root_build_dir) + " --files-to-instrument=" +
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rebase_path(toolchain_coverage_instrumentation_input_file,
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root_build_dir) + " --target-os=" + target_os
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cc = "$python_path $_coverage_wrapper ${cc}"
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cxx = "$python_path $_coverage_wrapper ${cxx}"
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}
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linker_driver =
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"TOOL_VERSION=${tool_versions.linker_driver} " +
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rebase_path("//build/toolchain/apple/linker_driver.py", root_build_dir)
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# Specify an explicit path for the strip binary.
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_strippath = invoker.bin_path + "strip"
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_installnametoolpath = invoker.bin_path + "install_name_tool"
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linker_driver += " -Wcrl,strippath,${_strippath} -Wcrl,installnametoolpath,${_installnametoolpath}"
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_enable_dsyms = enable_dsyms
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_save_unstripped_output = save_unstripped_output
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# Make these 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. Use label_name instead of
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# target_output_name since labels will generally have no spaces and will be
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# unique in the directory.
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object_subdir = "{{target_out_dir}}/{{label_name}}"
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# If dSYMs are enabled, this flag will be added to the link tools.
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if (_enable_dsyms) {
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dsym_switch = " -Wcrl,dsym,{{root_out_dir}} "
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dsym_switch += "-Wcrl,dsymutilpath," +
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rebase_path("//tools/clang/dsymutil/bin/dsymutil",
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root_build_dir) + " "
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dsym_output_dir =
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"{{root_out_dir}}/{{target_output_name}}{{output_extension}}.dSYM"
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dsym_output = [
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"$dsym_output_dir/Contents/Info.plist",
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"$dsym_output_dir/Contents/Resources/DWARF/" +
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"{{target_output_name}}{{output_extension}}",
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]
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} else {
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dsym_switch = ""
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}
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if (_save_unstripped_output) {
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_unstripped_output = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}.unstripped"
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}
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if (toolchain_has_rust) {
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if (!defined(rust_compiler_prefix)) {
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rust_compiler_prefix = ""
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}
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rustc_bin = rebase_path("${rust_sysroot}/bin/rustc", root_build_dir)
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rustc = "$rust_compiler_prefix${rustc_bin}"
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rust_sysroot_relative_to_out = rebase_path(rust_sysroot, root_out_dir)
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rustc_wrapper = rebase_path("//build/rust/rustc_wrapper.py")
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tool("rust_staticlib") {
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libname = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
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rspfile = "$libname.rsp"
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depfile = "$libname.d"
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default_output_extension = ".a"
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output_prefix = "lib"
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default_output_dir = "{{root_out_dir}}"
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description = "RUST(STATICLIB) {{output}}"
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outputs = [ libname ]
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# TODO(danakj): When `!toolchain_uses_lld` do we need to specify a path
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# to libtool like the "alink" rule?
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rspfile_content = "{{rustdeps}} {{externs}}"
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command = "\"$python_path\" \"$rustc_wrapper\" --rustc=$rustc --depfile=$depfile --rsp=$rspfile -- -Clinker=\"$_cxx\" $rustc_common_args --emit=dep-info=$depfile,link -o $libname LDFLAGS RUSTENV {{rustenv}}"
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rust_sysroot = rust_sysroot_relative_to_out
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}
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tool("rust_rlib") {
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# We must always prefix with `lib` even if the library already starts
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# with that prefix or else our stdlib is unable to find libc.rlib (or
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# actually liblibc.rlib).
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rlibname =
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"{{output_dir}}/lib{{target_output_name}}{{output_extension}}"
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depfile = "$rlibname.d"
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# Do not use rsp files in this (common) case because they occupy the
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# ninja main thread, and {{rlibs}} have shorter command lines than
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# fully linked targets.
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default_output_extension = ".rlib"
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# This is prefixed unconditionally in `rlibname`.
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# output_prefix = "lib"
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default_output_dir = "{{root_out_dir}}"
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description = "RUST {{output}}"
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outputs = [ rlibname ]
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command = "\"$python_path\" \"$rustc_wrapper\" --rustc=$rustc --depfile=$depfile -- -Clinker=\"$_cxx\" $rustc_common_args {{rustdeps}} {{externs}} --emit=dep-info=$depfile,link -o $rlibname LDFLAGS RUSTENV {{rustenv}}"
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rust_sysroot = rust_sysroot_relative_to_out
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}
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tool("rust_bin") {
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exename = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
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rspfile = "$exename.rsp"
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depfile = "$exename.d"
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pool = "//build/toolchain:link_pool($default_toolchain)"
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# TODO(danakj): solink can generate TOC files for re-exporting library
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# symbols, and we should do the same here.
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default_output_dir = "{{root_out_dir}}"
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description = "RUST(BIN) {{output}}"
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outputs = [ exename ]
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# TODO(danakj): Support dsym_switch like C++ targets.
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# link_command += dsym_switch
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# if (_enable_dsyms) {
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# outputs += dsym_output
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# }
|
||
|
|
# if (_save_unstripped_output) {
|
||
|
|
# outputs += [ _unstripped_output ]
|
||
|
|
# }
|
||
|
|
|
||
|
|
rspfile_content = "{{rustdeps}} {{externs}}"
|
||
|
|
command = "\"$python_path\" \"$rustc_wrapper\" --rustc=$rustc --depfile=$depfile --rsp=$rspfile -- -Clinker=\"${_cxx}\" $rustc_common_args --emit=dep-info=$depfile,link -o $exename LDFLAGS {{ldflags}} RUSTENV {{rustenv}}"
|
||
|
|
rust_sysroot = rust_sysroot_relative_to_out
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("rust_cdylib") {
|
||
|
|
dllname = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
|
||
|
|
rspfile = "$dllname.rsp"
|
||
|
|
depfile = "$dllname.d"
|
||
|
|
pool = "//build/toolchain:link_pool($default_toolchain)"
|
||
|
|
|
||
|
|
# TODO(danakj): solink can generate TOC files for re-exporting library
|
||
|
|
# symbols, and we should do the same here.
|
||
|
|
|
||
|
|
default_output_extension = ".dylib"
|
||
|
|
output_prefix = "lib"
|
||
|
|
default_output_dir = "{{root_out_dir}}"
|
||
|
|
description = "RUST(CDYLIB) {{output}}"
|
||
|
|
outputs = [ dllname ]
|
||
|
|
|
||
|
|
# TODO(danakj): Support dsym_switch like C++ targets.
|
||
|
|
# link_command += dsym_switch
|
||
|
|
# if (_enable_dsyms) {
|
||
|
|
# outputs += dsym_output
|
||
|
|
# }
|
||
|
|
# if (_save_unstripped_output) {
|
||
|
|
# outputs += [ _unstripped_output ]
|
||
|
|
# }
|
||
|
|
|
||
|
|
rspfile_content = "{{rustdeps}} {{externs}}"
|
||
|
|
command = "\"$python_path\" \"$rustc_wrapper\" --rustc=$rustc --depfile=$depfile --rsp=$rspfile -- -Clinker=\"${_cxx}\" $rustc_common_args --emit=dep-info=$depfile,link -o $dllname LDFLAGS {{ldflags}} RUSTENV {{rustenv}}"
|
||
|
|
rust_sysroot = rust_sysroot_relative_to_out
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("rust_macro") {
|
||
|
|
dllname = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
|
||
|
|
rspfile = "$dllname.rsp"
|
||
|
|
depfile = "$dllname.d"
|
||
|
|
pool = "//build/toolchain:link_pool($default_toolchain)"
|
||
|
|
|
||
|
|
# TODO(danakj): solink can generate TOC files for re-exporting library
|
||
|
|
# symbols, and we should do the same here.
|
||
|
|
|
||
|
|
default_output_extension = ".dylib"
|
||
|
|
output_prefix = "lib"
|
||
|
|
default_output_dir = "{{root_out_dir}}"
|
||
|
|
description = "RUST(MACRO) {{output}}"
|
||
|
|
outputs = [ dllname ]
|
||
|
|
|
||
|
|
# TODO(danakj): Support dsym_switch like C++ targets.
|
||
|
|
# link_command += dsym_switch
|
||
|
|
# if (_enable_dsyms) {
|
||
|
|
# outputs += dsym_output
|
||
|
|
# }
|
||
|
|
# if (_save_unstripped_output) {
|
||
|
|
# outputs += [ _unstripped_output ]
|
||
|
|
# }
|
||
|
|
|
||
|
|
rspfile_content = "{{rustdeps}} {{externs}}"
|
||
|
|
command = "\"$python_path\" \"$rustc_wrapper\" --rustc=$rustc --depfile=$depfile --rsp=$rspfile -- -Clinker=\"${_cxx}\" $rustc_common_args --emit=dep-info=$depfile,link -o $dllname LDFLAGS {{ldflags}} RUSTENV {{rustenv}}"
|
||
|
|
rust_sysroot = rust_sysroot_relative_to_out
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("cc") {
|
||
|
|
depfile = "{{output}}.d"
|
||
|
|
precompiled_header_type = "gcc"
|
||
|
|
command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"
|
||
|
|
depsformat = "gcc"
|
||
|
|
description = "CC {{output}}"
|
||
|
|
outputs = [ "$object_subdir/{{source_name_part}}.o" ]
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("cxx") {
|
||
|
|
depfile = "{{output}}.d"
|
||
|
|
precompiled_header_type = "gcc"
|
||
|
|
command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}"
|
||
|
|
depsformat = "gcc"
|
||
|
|
description = "CXX {{output}}"
|
||
|
|
outputs = [ "$object_subdir/{{source_name_part}}.o" ]
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("asm") {
|
||
|
|
# For GCC we can just use the C compiler to compile assembly.
|
||
|
|
depfile = "{{output}}.d"
|
||
|
|
command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{asmflags}} -c {{source}} -o {{output}}"
|
||
|
|
depsformat = "gcc"
|
||
|
|
description = "ASM {{output}}"
|
||
|
|
outputs = [ "$object_subdir/{{source_name_part}}.o" ]
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("objc") {
|
||
|
|
depfile = "{{output}}.d"
|
||
|
|
precompiled_header_type = "gcc"
|
||
|
|
command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{framework_dirs}} {{cflags}} {{cflags_objc}} -c {{source}} -o {{output}}"
|
||
|
|
depsformat = "gcc"
|
||
|
|
description = "OBJC {{output}}"
|
||
|
|
outputs = [ "$object_subdir/{{source_name_part}}.o" ]
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("objcxx") {
|
||
|
|
depfile = "{{output}}.d"
|
||
|
|
precompiled_header_type = "gcc"
|
||
|
|
command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{framework_dirs}} {{cflags}} {{cflags_objcc}} -c {{source}} -o {{output}}"
|
||
|
|
depsformat = "gcc"
|
||
|
|
description = "OBJCXX {{output}}"
|
||
|
|
outputs = [ "$object_subdir/{{source_name_part}}.o" ]
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("alink") {
|
||
|
|
rspfile = "{{output}}.rsp"
|
||
|
|
rspfile_content = "{{inputs}}"
|
||
|
|
|
||
|
|
if (!toolchain_uses_lld) {
|
||
|
|
script = rebase_path("//build/toolchain/apple/filter_libtool.py",
|
||
|
|
root_build_dir)
|
||
|
|
|
||
|
|
# Specify explicit path for libtool.
|
||
|
|
libtool = invoker.bin_path + "libtool"
|
||
|
|
command = "rm -f {{output}} && TOOL_VERSION=${tool_versions.filter_libtool} $python_path $script $libtool -static -D {{arflags}} -o {{output}} @$rspfile"
|
||
|
|
description = "LIBTOOL-STATIC {{output}}"
|
||
|
|
} else {
|
||
|
|
ar = "${prefix}llvm-ar"
|
||
|
|
command = "\"$ar\" {{arflags}} -r -c -s -D {{output}} @$rspfile"
|
||
|
|
|
||
|
|
# Remove the output file first so that ar doesn't try to modify the
|
||
|
|
# existing file.
|
||
|
|
command = "rm -f {{output}} && $command"
|
||
|
|
description = "AR {{output}}"
|
||
|
|
}
|
||
|
|
outputs = [ "{{output_dir}}/{{target_output_name}}{{output_extension}}" ]
|
||
|
|
default_output_dir = "{{target_out_dir}}"
|
||
|
|
default_output_extension = ".a"
|
||
|
|
output_prefix = "lib"
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("solink") {
|
||
|
|
# E.g. "./libfoo.dylib":
|
||
|
|
dylib = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
|
||
|
|
rspfile = dylib + ".rsp"
|
||
|
|
pool = "//build/toolchain:link_pool($default_toolchain)"
|
||
|
|
|
||
|
|
# These variables are not built into GN but are helpers that implement
|
||
|
|
# (1) linking to produce a .dylib, (2) extracting the symbols from that
|
||
|
|
# file to a temporary file, (3) if the temporary file has differences from
|
||
|
|
# the existing .TOC file, overwrite it, otherwise, don't change it.
|
||
|
|
#
|
||
|
|
# As a special case, if the library reexports symbols from other dynamic
|
||
|
|
# libraries, we always update the .TOC and skip the temporary file and
|
||
|
|
# diffing steps, since that library always needs to be re-linked.
|
||
|
|
tocname = dylib + ".TOC"
|
||
|
|
temporary_tocname = dylib + ".tmp"
|
||
|
|
|
||
|
|
# Use explicit paths to binaries. The binaries present on the default
|
||
|
|
# search path in /usr/bin are thin wrappers around xcrun, which requires a
|
||
|
|
# full CommandLineTools or Xcode install, and still may not choose the
|
||
|
|
# appropriate binary if there are multiple installs.
|
||
|
|
if (host_os == "mac") {
|
||
|
|
nm = invoker.bin_path + "nm"
|
||
|
|
otool = invoker.bin_path + "otool"
|
||
|
|
} else {
|
||
|
|
nm = "${prefix}llvm-nm"
|
||
|
|
otool = "${prefix}llvm-otool"
|
||
|
|
}
|
||
|
|
|
||
|
|
does_reexport_command = "[ ! -e \"$dylib\" -o ! -e \"$tocname\" ] || $otool -l \"$dylib\" | grep -q LC_REEXPORT_DYLIB"
|
||
|
|
|
||
|
|
link_command = "$linker_driver $ld -shared "
|
||
|
|
if (toolchain_is_component_build) {
|
||
|
|
link_command += " -Wl,-install_name,@rpath/\"{{target_output_name}}{{output_extension}}\" "
|
||
|
|
}
|
||
|
|
link_command += dsym_switch
|
||
|
|
link_command += "{{ldflags}} -o \"$dylib\" \"@$rspfile\""
|
||
|
|
|
||
|
|
replace_command = "if ! cmp -s \"$temporary_tocname\" \"$tocname\"; then mv \"$temporary_tocname\" \"$tocname\""
|
||
|
|
extract_toc_command = "{ $otool -l \"$dylib\" | grep LC_ID_DYLIB -A 5; $nm -gPp \"$dylib\" | cut -f1-2 -d' ' | grep -v U\$\$; true; }"
|
||
|
|
|
||
|
|
command = "if $does_reexport_command ; then $link_command && $extract_toc_command > \"$tocname\"; else $link_command && $extract_toc_command > \"$temporary_tocname\" && $replace_command ; fi; fi"
|
||
|
|
|
||
|
|
rspfile_content = "{{inputs}} {{frameworks}} {{swiftmodules}} {{solibs}} {{libs}} {{rlibs}}"
|
||
|
|
|
||
|
|
description = "SOLINK {{output}}"
|
||
|
|
|
||
|
|
# Use this for {{output_extension}} expansions unless a target manually
|
||
|
|
# overrides it (in which case {{output_extension}} will be what the target
|
||
|
|
# specifies).
|
||
|
|
default_output_dir = "{{root_out_dir}}"
|
||
|
|
default_output_extension = ".dylib"
|
||
|
|
|
||
|
|
output_prefix = "lib"
|
||
|
|
|
||
|
|
# Since the above commands only updates the .TOC file when it changes, ask
|
||
|
|
# Ninja to check if the timestamp actually changed to know if downstream
|
||
|
|
# dependencies should be recompiled.
|
||
|
|
restat = true
|
||
|
|
|
||
|
|
# Tell GN about the output files. It will link to the dylib but use the
|
||
|
|
# tocname for dependency management.
|
||
|
|
outputs = [
|
||
|
|
dylib,
|
||
|
|
tocname,
|
||
|
|
]
|
||
|
|
link_output = dylib
|
||
|
|
depend_output = tocname
|
||
|
|
|
||
|
|
if (_enable_dsyms) {
|
||
|
|
outputs += dsym_output
|
||
|
|
}
|
||
|
|
if (_save_unstripped_output) {
|
||
|
|
outputs += [ _unstripped_output ]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("solink_module") {
|
||
|
|
# E.g. "./libfoo.so":
|
||
|
|
sofile = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
|
||
|
|
rspfile = sofile + ".rsp"
|
||
|
|
pool = "//build/toolchain:link_pool($default_toolchain)"
|
||
|
|
|
||
|
|
link_command =
|
||
|
|
"$linker_driver $ld -bundle {{ldflags}} -o \"$sofile\" \"@$rspfile\""
|
||
|
|
link_command += dsym_switch
|
||
|
|
command = link_command
|
||
|
|
|
||
|
|
rspfile_content = "{{inputs}} {{frameworks}} {{swiftmodules}} {{solibs}} {{libs}} {{rlibs}}"
|
||
|
|
|
||
|
|
description = "SOLINK_MODULE {{output}}"
|
||
|
|
|
||
|
|
# Use this for {{output_extension}} expansions unless a target manually
|
||
|
|
# overrides it (in which case {{output_extension}} will be what the target
|
||
|
|
# specifies).
|
||
|
|
default_output_dir = "{{root_out_dir}}"
|
||
|
|
default_output_extension = ".so"
|
||
|
|
|
||
|
|
outputs = [ sofile ]
|
||
|
|
|
||
|
|
if (_enable_dsyms) {
|
||
|
|
outputs += dsym_output
|
||
|
|
}
|
||
|
|
if (_save_unstripped_output) {
|
||
|
|
outputs += [ _unstripped_output ]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("link") {
|
||
|
|
outfile = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
|
||
|
|
rspfile = "$outfile.rsp"
|
||
|
|
pool = "//build/toolchain:link_pool($default_toolchain)"
|
||
|
|
|
||
|
|
command = "$linker_driver $ld $dsym_switch {{ldflags}} -o \"$outfile\" \"@$rspfile\""
|
||
|
|
description = "LINK $outfile"
|
||
|
|
rspfile_content = "{{inputs}} {{frameworks}} {{swiftmodules}} {{solibs}} {{libs}} {{rlibs}}"
|
||
|
|
outputs = [ outfile ]
|
||
|
|
|
||
|
|
if (_enable_dsyms) {
|
||
|
|
outputs += dsym_output
|
||
|
|
}
|
||
|
|
if (_save_unstripped_output) {
|
||
|
|
outputs += [ _unstripped_output ]
|
||
|
|
}
|
||
|
|
|
||
|
|
default_output_dir = "{{root_out_dir}}"
|
||
|
|
}
|
||
|
|
|
||
|
|
# These two are really entirely generic, but have to be repeated in
|
||
|
|
# each toolchain because GN doesn't allow a template to be used here.
|
||
|
|
# See //build/toolchain/toolchain.gni for details.
|
||
|
|
tool("stamp") {
|
||
|
|
command = stamp_command
|
||
|
|
description = stamp_description
|
||
|
|
}
|
||
|
|
tool("copy") {
|
||
|
|
command = copy_command
|
||
|
|
description = copy_description
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("copy_bundle_data") {
|
||
|
|
# copy_command use hardlink if possible but this does not work with
|
||
|
|
# directories. Also when running EG2 tests from Xcode, Xcode tries to
|
||
|
|
# copy some files into the application bundle which fails if source
|
||
|
|
# and destination are hardlinked together.
|
||
|
|
#
|
||
|
|
# Instead use clonefile to copy the files which is as efficient as
|
||
|
|
# hardlink but ensure the file have distinct metadata (thus avoid the
|
||
|
|
# error with ditto, see https://crbug.com/1042182).
|
||
|
|
if (host_os == "mac") {
|
||
|
|
command = "rm -rf {{output}} && /bin/cp -Rc {{source}} {{output}}"
|
||
|
|
} else {
|
||
|
|
command = "rm -rf {{output}} && /bin/cp -Rld {{source}} {{output}}"
|
||
|
|
}
|
||
|
|
description = "COPY_BUNDLE_DATA {{source}} {{output}}"
|
||
|
|
pool = "//build/toolchain/apple:bundle_pool($default_toolchain)"
|
||
|
|
}
|
||
|
|
|
||
|
|
# Swift is only used on iOS, not macOS. We want to minimize the number
|
||
|
|
# of Xcode-based tools used by the macOS toolchain, so we intentionally
|
||
|
|
# disallow future uses of Swift on macOS. https://crbug.com/965663.
|
||
|
|
if (toolchain_args.current_os == "ios") {
|
||
|
|
tool("swift") {
|
||
|
|
_tool = rebase_path("//build/toolchain/ios/swiftc.py", root_build_dir)
|
||
|
|
|
||
|
|
depfile = "{{target_out_dir}}/{{module_name}}.d"
|
||
|
|
depsformat = "gcc"
|
||
|
|
|
||
|
|
outputs = [
|
||
|
|
# The module needs to be the first output listed. The blank line after
|
||
|
|
# the module is required to prevent `gn format` from changing the file
|
||
|
|
# order.
|
||
|
|
"{{target_gen_dir}}/{{module_name}}.swiftmodule",
|
||
|
|
|
||
|
|
"{{target_gen_dir}}/{{target_output_name}}.h",
|
||
|
|
"{{target_gen_dir}}/{{module_name}}.swiftdoc",
|
||
|
|
"{{target_gen_dir}}/{{module_name}}.swiftsourceinfo",
|
||
|
|
]
|
||
|
|
|
||
|
|
# Additional flags passed to the wrapper script but that are only
|
||
|
|
# set conditionally.
|
||
|
|
_extra_flags = ""
|
||
|
|
|
||
|
|
if (swift_whole_module_optimization) {
|
||
|
|
_extra_flags += " -whole-module-optimization"
|
||
|
|
_objects_dir = "{{target_out_dir}}"
|
||
|
|
|
||
|
|
outputs += [ "$_objects_dir/{{module_name}}.o" ]
|
||
|
|
} else {
|
||
|
|
_objects_dir = "{{target_out_dir}}/{{label_name}}"
|
||
|
|
|
||
|
|
partial_outputs = [ "$_objects_dir/{{source_name_part}}.o" ]
|
||
|
|
}
|
||
|
|
|
||
|
|
_env_vars = "TOOL_VERSION=${tool_versions.swiftc}"
|
||
|
|
if (invoker.sdk_developer_dir != "") {
|
||
|
|
_env_vars += " DEVELOPER_DIR=${toolchain_args.sdk_developer_dir}"
|
||
|
|
}
|
||
|
|
|
||
|
|
# Starting with version 5.6, the Swift compiler will always
|
||
|
|
# generates precompiled headers. In anterior version, it was
|
||
|
|
# used when bridging headers and whole module optimisation
|
||
|
|
# where enabled, and it could be disabled with the parameter
|
||
|
|
# `-disable-bridging-pch`.
|
||
|
|
#
|
||
|
|
# The precompiled headers are binary files (i.e. they are not
|
||
|
|
# regular Objective-C header files and cannot be loaded as such).
|
||
|
|
#
|
||
|
|
# There is an hidden requirements that the compiler needs to
|
||
|
|
# be told where to save those .pch files (via the parameter
|
||
|
|
# `-pch-output-dir $dir`). If this parameter is not passed, the
|
||
|
|
# compiler will silently write them at an incorrect location,
|
||
|
|
# leading later pass to try to load those .pch files as either
|
||
|
|
# regular header files (.h) or object files (.o) and causing
|
||
|
|
# to compilation failures.
|
||
|
|
#
|
||
|
|
# List the directory where the precompiled header is generated
|
||
|
|
# as an output, but do not list the .pch file itself. This is
|
||
|
|
# because the names includes two hashes (one corresponding to
|
||
|
|
# the compiler revision, and the other probably derived from
|
||
|
|
# the module itself) that are difficult to generate.
|
||
|
|
#
|
||
|
|
# Still we want to avoid creating a directory that has the same
|
||
|
|
# name as a file generated by another rule, so explicitly list
|
||
|
|
# the directory in `outputs` so that gn can warn it is conflicts
|
||
|
|
# with another output file.
|
||
|
|
|
||
|
|
_pch_output_dir = "{{target_out_dir}}/{{module_name}}:pch/"
|
||
|
|
outputs += [ _pch_output_dir ]
|
||
|
|
|
||
|
|
# Include the version of the compiler on the command-line. This causes
|
||
|
|
# `ninja` to consider all the compilation output to be dirty when the
|
||
|
|
# version changes.
|
||
|
|
if (defined(swiftc_version)) {
|
||
|
|
_extra_flags += " -swiftc-version $swiftc_version"
|
||
|
|
}
|
||
|
|
|
||
|
|
# Include the version of Xcode on the command-line (if specified via
|
||
|
|
# toolchain_args). This causes `ninja` to consider all the compilation
|
||
|
|
# outputs to be dirty when the version change.
|
||
|
|
#
|
||
|
|
# This is required because sometimes module dependency changes between
|
||
|
|
# different version of Xcode (e.g. when moving from Xcode 14 beta 6 to
|
||
|
|
# Xcode 14 RC). If the swiftmodule are not rebuilt when the version
|
||
|
|
# changes, they may encode dependency on now non-existing frameworks
|
||
|
|
# causing linker failures ultimately.
|
||
|
|
if (defined(toolchain_args.xcode_build)) {
|
||
|
|
_extra_flags += " -xcode-version ${toolchain_args.xcode_build}"
|
||
|
|
}
|
||
|
|
|
||
|
|
if (swift_toolchain_path != "") {
|
||
|
|
_extra_flags += " -swift-toolchain-path " +
|
||
|
|
rebase_path(swift_toolchain_path, root_build_dir)
|
||
|
|
}
|
||
|
|
|
||
|
|
# The Swift compiler assumes that the generated header will be used by
|
||
|
|
# Objective-C code compiled with module support enabled (-fmodules).
|
||
|
|
#
|
||
|
|
# The import looks like this in the generated header:
|
||
|
|
#
|
||
|
|
# #if __has_feature(modules)
|
||
|
|
# @import UIKit;
|
||
|
|
# #endif
|
||
|
|
#
|
||
|
|
# As Chromium code is compiled without support for modules (i.e. the
|
||
|
|
# code is compiled without `-fmodules`), the dependent modules are not
|
||
|
|
# imported from the generated header, which causes compilation failure
|
||
|
|
# if the client code does not first import the required modules (see
|
||
|
|
# https://crbug.com/1316061 for details).
|
||
|
|
#
|
||
|
|
# Secondly, clang ToT always returns `1` when `__has_features(modules)`
|
||
|
|
# is evaluated, even if building with `-fno-modules` when building with
|
||
|
|
# `-std=c++20` (see https://crbug.com/1284275 for details). This causes
|
||
|
|
# the `@import` lines to be reached and the build to fail (since the
|
||
|
|
# support for modules is not enabled).
|
||
|
|
#
|
||
|
|
# Instruct swiftc.py to rewrite the generated header to use the old
|
||
|
|
# import pre-processor instructions (#import <UIKit/UIKit.h>) to work
|
||
|
|
# around those two issues.
|
||
|
|
_extra_flags += " -fix-module-imports"
|
||
|
|
|
||
|
|
command =
|
||
|
|
"$_env_vars $python_path $_tool -module-name {{module_name}} " +
|
||
|
|
"-root-dir " + rebase_path("//", root_build_dir) + " " +
|
||
|
|
"-object-dir $_objects_dir -pch-output-dir $_pch_output_dir " +
|
||
|
|
"-module-path {{target_gen_dir}}/{{module_name}}.swiftmodule " +
|
||
|
|
"-header-path {{target_gen_dir}}/{{target_output_name}}.h " +
|
||
|
|
"-depfile {{target_out_dir}}/{{module_name}}.d " +
|
||
|
|
"-bridge-header {{bridge_header}} $_extra_flags " +
|
||
|
|
"{{swiftflags}} {{include_dirs}} {{module_dirs}} {{inputs}}"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# xcassets are only used on iOS, not macOS. We want to minimize the number
|
||
|
|
# of Xcode-based tools used by the macOS toolchain, so we intentionally
|
||
|
|
# disallow future uses of xcassets on macOS. https://crbug.com/965663.
|
||
|
|
if (toolchain_args.current_os == "ios") {
|
||
|
|
tool("compile_xcassets") {
|
||
|
|
_tool = rebase_path("//build/toolchain/ios/compile_xcassets.py",
|
||
|
|
root_build_dir)
|
||
|
|
|
||
|
|
_env_vars = "TOOL_VERSION=${tool_versions.compile_xcassets}"
|
||
|
|
if (invoker.sdk_developer_dir != "") {
|
||
|
|
_env_vars += " DEVELOPER_DIR=${toolchain_args.sdk_developer_dir}"
|
||
|
|
}
|
||
|
|
|
||
|
|
command =
|
||
|
|
"$_env_vars $python_path $_tool " +
|
||
|
|
"-p '${toolchain_args.current_os}' " +
|
||
|
|
"-e '${invoker.target_environment}' " +
|
||
|
|
"-t '${invoker.deployment_target}' " +
|
||
|
|
"-T '{{bundle_product_type}}' " +
|
||
|
|
"-P '{{bundle_partial_info_plist}}' " + "-o {{output}} {{inputs}}"
|
||
|
|
|
||
|
|
description = "COMPILE_XCASSETS {{output}}"
|
||
|
|
pool = "//build/toolchain/apple:bundle_pool($default_toolchain)"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
tool("action") {
|
||
|
|
pool = "//build/toolchain:action_pool($default_toolchain)"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# Makes a single Apple toolchain, or possibly two if we need a
|
||
|
|
# sanitizer-free equivalent.
|
||
|
|
template("apple_toolchain") {
|
||
|
|
single_apple_toolchain(target_name) {
|
||
|
|
assert(defined(invoker.toolchain_args),
|
||
|
|
"Toolchains must declare toolchain_args")
|
||
|
|
forward_variables_from(invoker,
|
||
|
|
"*",
|
||
|
|
[
|
||
|
|
"visibility",
|
||
|
|
"test_only",
|
||
|
|
])
|
||
|
|
|
||
|
|
# No need to forward visibility and test_only as they apply to targets not
|
||
|
|
# toolchains, but presubmit checks require that we explicitly exclude them
|
||
|
|
}
|
||
|
|
|
||
|
|
if (using_sanitizer) {
|
||
|
|
# Make an additional toolchain with no sanitizers.
|
||
|
|
single_apple_toolchain("${target_name}_no_sanitizers") {
|
||
|
|
assert(defined(invoker.toolchain_args),
|
||
|
|
"Toolchains must declare toolchain_args")
|
||
|
|
forward_variables_from(invoker,
|
||
|
|
"*",
|
||
|
|
[
|
||
|
|
"toolchain_args",
|
||
|
|
"visibility",
|
||
|
|
"test_only",
|
||
|
|
])
|
||
|
|
toolchain_args = {
|
||
|
|
# Populate toolchain args from the invoker.
|
||
|
|
forward_variables_from(invoker.toolchain_args, "*")
|
||
|
|
toolchain_disables_sanitizers = true
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|