# Copyright 2022 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import("//build/config/clang/clang.gni")
import("//build/config/compiler/compiler.gni")
import("//build/config/rust.gni")
import("//build/config/sanitizers/sanitizers.gni")
import("//build/config/win/visual_studio_version.gni")
import("//build/toolchain/cc_wrapper.gni")
import("//build/toolchain/goma.gni")
import("//build/toolchain/rbe.gni")
import("//build/toolchain/toolchain.gni")
import("//build/toolchain/win/win_toolchain_data.gni")
assert(is_win, "Should only be running on Windows")
# This tool will is used as a wrapper for various commands below.
_tool_wrapper_path =
rebase_path("//build/toolchain/win/tool_wrapper.py", root_build_dir)
if (host_os == "win") {
_exe = ".exe"
} else {
_exe = ""
}
_clang_bin_path = rebase_path("$clang_base_path/bin", root_build_dir)
# Makes a single MSVC toolchain.
#
# Parameters:
# environment: File name of environment file.
#
# You would also define a toolchain_args variable with at least these set:
# current_cpu: current_cpu to pass as a build arg
# current_os: current_os to pass as a build arg
template("msvc_toolchain") {
toolchain(target_name) {
# When invoking this toolchain not as the default one, these args will be
# passed to the build. They are ignored when this is the default toolchain.
assert(defined(invoker.toolchain_args))
toolchain_args = {
forward_variables_from(invoker.toolchain_args, "*")
# This value needs to be passed through unchanged.
host_toolchain = host_toolchain
}
if (defined(toolchain_args.is_clang)) {
toolchain_is_clang = toolchain_args.is_clang
} else {
toolchain_is_clang = is_clang
}
# When the invoker has explicitly overridden use_goma or cc_wrapper in the
# toolchain args, use those values, otherwise default to the global one.
# This works because the only reasonable override that toolchains might
# supply for these values are to force-disable them.
if (defined(toolchain_args.use_remoteexec)) {
toolchain_uses_remoteexec = toolchain_args.use_remoteexec
} else {
toolchain_uses_remoteexec = use_remoteexec
}
if (defined(toolchain_args.use_goma)) {
toolchain_uses_goma = toolchain_args.use_goma
} else {
toolchain_uses_goma = use_goma
}
if (defined(toolchain_args.cc_wrapper)) {
toolchain_cc_wrapper = toolchain_args.cc_wrapper
} else {
toolchain_cc_wrapper = cc_wrapper
}
assert(!(toolchain_uses_remoteexec && toolchain_uses_goma),
"Goma and re-client can't be used together.")
assert(!(toolchain_cc_wrapper != "" && toolchain_uses_remoteexec),
"re-client and cc_wrapper can't be used together.")
assert(!(toolchain_cc_wrapper != "" && toolchain_uses_goma),
"Goma and cc_wrapper can't be used together.")
if (toolchain_uses_remoteexec) {
if (toolchain_is_clang) {
cl_prefix = "${rbe_bin_dir}/rewrapper -cfg=${rbe_cc_cfg_file} -exec_root=${rbe_exec_root} -labels=type=compile,compiler=clang-cl,lang=cpp "
} else {
cl_prefix = ""
}
} else if (toolchain_uses_goma) {
cl_prefix = "${goma_dir}/gomacc${_exe} "
} else if (toolchain_cc_wrapper != "" && toolchain_is_clang) {
cl_prefix = toolchain_cc_wrapper + " "
} else {
cl_prefix = ""
}
cl = "${cl_prefix}${invoker.cl}"
if (host_os == "win") {
# Flip the slashes so that copy/paste of the command works.
cl = string_replace(cl, "/", "\\")
}
# Make these apply to all tools below.
lib_switch = ""
lib_dir_switch = "/LIBPATH:"
# Object files go in this directory.
object_subdir = "{{target_out_dir}}/{{label_name}}"
env = invoker.environment
if (use_lld) {
# lld-link includes a replacement for lib.exe that can produce thin
# archives and understands bitcode (for lto builds).
link = "${_clang_bin_path}/lld-link${_exe}"
cc_linkflags = ""
if (toolchain_has_rust) {
rust_linkflags = ""
}
if (host_os == "win") {
# Flip the slashes so that copy/paste of the commands works.
link = string_replace(link, "/", "\\")
}
lib = "$link /lib"
if (host_os != "win") {
# See comment adding --rsp-quoting to $cl above for more information.
cc_linkflags += " --rsp-quoting=posix"
if (toolchain_has_rust) {
rust_linkflags += " -Clink-arg=--rsp-quoting=posix"
}
}
} else {
lib = "lib.exe"
link = "link.exe"
cc_linkflags = ""
if (toolchain_has_rust) {
rust_linkflags = ""
}
}
# If possible, pass system includes as flags to the compiler. When that's
# not possible, load a full environment file (containing %INCLUDE% and
# %PATH%) -- e.g. 32-bit MSVS builds require %PATH% to be set and just
# passing in a list of include directories isn't enough.
if (defined(invoker.sys_include_flags)) {
env_wrapper = ""
sys_include_flags =
"${invoker.sys_include_flags} " # Note trailing space.
} else {
# clang-cl doesn't need this env hoop, so omit it there.
assert(!toolchain_is_clang)
env_wrapper = "ninja -t msvc -e $env -- " # Note trailing space.
sys_include_flags = ""
}
if (host_os != "win" || (use_lld && defined(invoker.sys_lib_flags))) {
linker_wrapper = ""
sys_lib_flags = "${invoker.sys_lib_flags}"
# TODO(thakis): Remove once crbug.com/1300005 is fixed
assert(toolchain_args.current_cpu == "x64" ||
toolchain_args.current_cpu == "x86" ||
toolchain_args.current_cpu == "arm" ||
toolchain_args.current_cpu == "arm64",
"Only supports x64, x86, arm and arm64 CPUs")
if (toolchain_args.current_cpu == "x64") {
sys_lib_flags += " /MACHINE:X64"
} else if (toolchain_args.current_cpu == "x86") {
sys_lib_flags += " /MACHINE:X86"
} else if (toolchain_args.current_cpu == "arm") {
sys_lib_flags += " /MACHINE:ARM"
} else if (toolchain_args.current_cpu == "arm64") {
sys_lib_flags += " /MACHINE:ARM64"
}
sys_lib_flags += " " # Note trailing space.
} else {
# link.exe must be run under a wrapper to set up the environment
# (it needs %LIB% set to find libraries), and to work around its bugs.
# Note trailing space:
linker_wrapper =
"\"$python_path\" $_tool_wrapper_path link-wrapper $env False "
sys_lib_flags = ""
}
if (defined(toolchain_args.use_clang_coverage)) {
toolchain_use_clang_coverage = toolchain_args.use_clang_coverage
} else {
toolchain_use_clang_coverage = use_clang_coverage
}
if (toolchain_use_clang_coverage) {
assert(toolchain_is_clang,
"use_clang_coverage should only be used with Clang")
if (defined(toolchain_args.coverage_instrumentation_input_file)) {
toolchain_coverage_instrumentation_input_file =
toolchain_args.coverage_instrumentation_input_file
} else {
toolchain_coverage_instrumentation_input_file =
coverage_instrumentation_input_file
}
coverage_wrapper =
rebase_path("//build/toolchain/clang_code_coverage_wrapper.py",
root_build_dir)
coverage_wrapper = coverage_wrapper + " --target-os=" + target_os
if (toolchain_coverage_instrumentation_input_file != "") {
coverage_wrapper =
coverage_wrapper + " --files-to-instrument=" +
rebase_path(toolchain_coverage_instrumentation_input_file,
root_build_dir)
}
coverage_wrapper = "\"$python_path\" " + coverage_wrapper + " "
} else {
coverage_wrapper = ""
}
# Disabled with cc_wrapper because of
# https://github.com/mozilla/sccache/issues/1013
if (toolchain_is_clang && toolchain_cc_wrapper == "") {
# This flag omits system includes from /showIncludes output, to reduce
# the amount of data to parse and store in .ninja_deps. We do this on
# non-Windows too, and already make sure rebuilds after winsdk/libc++/
# clang header updates happen via changing command line flags.
show_includes = "/showIncludes:user"
} else {
show_includes = "/showIncludes"
}
tool("cc") {
precompiled_header_type = "msvc"
pdbname = "{{target_out_dir}}/{{label_name}}_c.pdb"
# Label names may have spaces in them so the pdbname must be quoted. The
# source and output don't need to be quoted because GN knows they're a
# full file name and will quote automatically when necessary.
depsformat = "msvc"
description = "CC {{output}}"
outputs = [ "$object_subdir/{{source_name_part}}.obj" ]
# Note that the code coverage wrapper scripts assumes that {{source}}
# comes immediately after /c.
command = "$coverage_wrapper$env_wrapper$cl /c {{source}} /nologo $show_includes $sys_include_flags{{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} /Fo{{output}} /Fd\"$pdbname\""
}
tool("cxx") {
precompiled_header_type = "msvc"
# The PDB name needs to be different between C and C++ compiled files.
pdbname = "{{target_out_dir}}/{{label_name}}_cc.pdb"
# See comment in CC tool about quoting.
depsformat = "msvc"
description = "CXX {{output}}"
outputs = [ "$object_subdir/{{source_name_part}}.obj" ]
# Note that the code coverage wrapper scripts assumes that {{source}}
# comes immediately after /c.
command = "$coverage_wrapper$env_wrapper$cl /c {{source}} /Fo{{output}} /nologo $show_includes $sys_include_flags{{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} /Fd\"$pdbname\""
}
tool("rc") {
command = "\"$python_path\" $_tool_wrapper_path rc-wrapper $env rc.exe /nologo $sys_include_flags{{defines}} {{include_dirs}} /fo{{output}} {{source}}"
depsformat = "msvc"
outputs = [ "$object_subdir/{{source_name_part}}.res" ]
description = "RC {{output}}"
}
tool("asm") {
is_msvc_assembler = true
if (toolchain_args.current_cpu == "arm64") {
if (toolchain_is_clang) {
ml = "${cl_prefix}${_clang_bin_path}/clang-cl${_exe} --target=aarch64-pc-windows"
if (host_os == "win") {
# Flip the slashes so that copy/paste of the command works.
ml = string_replace(ml, "/", "\\")
}
ml += " -c -o{{output}}"
is_msvc_assembler = false
} else {
# Only affects Arm builds with is_clang = false, implemented for
# building V8 for Windows on Arm systems with the MSVC toolchain.
ml = "armasm64.exe"
}
} else {
if (toolchain_is_clang && !disable_llvm_ml) {
prefix = rebase_path("$clang_base_path/bin", root_build_dir)
ml = "$prefix/llvm-ml${_exe}"
if (toolchain_args.current_cpu == "x64") {
ml += " -m64"
} else {
ml += " -m32"
}
} else {
if (toolchain_args.current_cpu == "x64") {
ml = "ml64.exe"
} else {
ml = "ml.exe"
}
}
}
if (is_msvc_assembler) {
ml += " /nologo /Fo{{output}}"
# Suppress final-stage linking on x64/x86 builds. (Armasm64 does not
# require /c because it doesn't support linking.)
if (toolchain_args.current_cpu != "arm64") {
ml += " /c"
}
if (use_lld && (!toolchain_is_clang || disable_llvm_ml)) {
# Wrap ml(64).exe with a script that makes its output deterministic.
# It's lld only because the script zaps obj Timestamp which
# link.exe /incremental looks at.
ml_py = rebase_path("//build/toolchain/win/ml.py", root_build_dir)
ml = "\"$python_path\" $ml_py $ml"
}
if (toolchain_args.current_cpu == "arm64") {
# armasm64.exe does not support definitions passed via the command
# line. (Fortunately, they're not needed for compiling the V8
# snapshot, which is the only time this assembler is required.)
command = "\"$python_path\" $_tool_wrapper_path asm-wrapper $env $ml {{include_dirs}} {{asmflags}} {{source}}"
} else {
command = "\"$python_path\" $_tool_wrapper_path asm-wrapper $env $ml {{defines}} {{include_dirs}} {{asmflags}} {{source}}"
}
} else {
command = "$ml {{defines}} {{include_dirs}} {{asmflags}} {{source}}"
}
description = "ASM {{output}}"
outputs = [ "$object_subdir/{{source_name_part}}.obj" ]
}
if (toolchain_has_rust) {
rust_sysroot_relative = rebase_path(rust_sysroot, root_build_dir)
rustc = "$rust_sysroot_relative/bin/rustc"
rustc_wrapper =
rebase_path("//build/rust/rustc_wrapper.py", root_build_dir)
rustc_windows_args = " -Clinker=$link$rust_linkflags $rustc_common_args"
tool("rust_staticlib") {
libname = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
rspfile = "$libname.rsp"
depfile = "$libname.d"
default_output_extension = ".lib"
output_prefix = "lib"
# Static libraries go in the target out directory by default so we can
# generate different targets with the same name and not have them
# collide.
default_output_dir = "{{target_out_dir}}"
description = "RUST(STATICLIB) {{output}}"
outputs = [ libname ]
rspfile_content = "{{rustdeps}} {{externs}} SOURCES {{sources}}"
command = "\"$python_path\" \"$rustc_wrapper\" --target-windows --rustc=$rustc --depfile=$depfile --rsp=$rspfile -- $rustc_windows_args --emit=dep-info=$depfile,link -o $libname LDFLAGS RUSTENV {{rustenv}}"
rust_sysroot = rust_sysroot_relative
}
tool("rust_rlib") {
# We must always prefix with `lib` even if the library already starts
# with that prefix or else our stdlib is unable to find libc.rlib (or
# actually liblibc.rlib).
rlibname =
"{{output_dir}}/lib{{target_output_name}}{{output_extension}}"
rspfile = "$rlibname.rsp"
depfile = "$rlibname.d"
default_output_extension = ".rlib"
# This is prefixed unconditionally in `rlibname`.
# output_prefix = "lib"
# Static libraries go in the target out directory by default so we can
# generate different targets with the same name and not have them
# collide.
default_output_dir = "{{target_out_dir}}"
description = "RUST {{output}}"
outputs = [ rlibname ]
rspfile_content = "{{rustdeps}} {{externs}} SOURCES {{sources}}"
command = "\"$python_path\" \"$rustc_wrapper\" --target-windows --rustc=$rustc --depfile=$depfile --rsp=$rspfile -- $rustc_windows_args --emit=dep-info=$depfile,link -o $rlibname {{rustdeps}} {{externs}} LDFLAGS RUSTENV {{rustenv}}"
rust_sysroot = rust_sysroot_relative
}
tool("rust_bin") {
exename = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
pdbname = "$exename.pdb"
rspfile = "$exename.rsp"
depfile = "$exename.d"
pool = "//build/toolchain:link_pool($default_toolchain)"
default_output_extension = ".exe"
default_output_dir = "{{root_out_dir}}"
description = "RUST(BIN) {{output}}"
outputs = [
# The first entry here is used for dependency tracking.
exename,
pdbname,
]
runtime_outputs = outputs
rspfile_content = "{{rustdeps}} {{externs}} SOURCES {{sources}}"
dynamic_link_switch = ""
command = "\"$python_path\" \"$rustc_wrapper\" --target-windows --rustc=$rustc --depfile=$depfile --rsp=$rspfile -- $rustc_windows_args --emit=dep-info=$depfile,link -o $exename LDFLAGS {{ldflags}} $sys_lib_flags /PDB:$pdbname RUSTENV {{rustenv}}"
rust_sysroot = rust_sysroot_relative
}
tool("rust_cdylib") {
# E.g. "foo.dll":
dllname = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
libname = "$dllname.lib" # e.g. foo.dll.lib
pdbname = "$dllname.pdb"
rspfile = "$dllname.rsp"
depfile = "$dllname.d"
pool = "//build/toolchain:link_pool($default_toolchain)"
default_output_extension = ".dll"
default_output_dir = "{{root_out_dir}}"
description = "RUST(CDYLIB) {{output}}"
outputs = [
# The first entry here is used for dependency tracking. Dylibs are
# linked into other targets and that linking must be done through
# the .lib file, not the .dll file. So the .lib file is the primary
# output here.
libname,
dllname,
pdbname,
]
runtime_outputs = [
dllname,
pdbname,
]
rspfile_content = "{{rustdeps}} {{externs}} SOURCES {{sources}}"
dynamic_link_switch = ""
command = "\"$python_path\" \"$rustc_wrapper\" --target-windows --rustc=$rustc --depfile=$depfile --rsp=$rspfile -- $rustc_windows_args --emit=dep-info=$depfile,link -o $dllname LDFLAGS {{ldflags}} $sys_lib_flags /PDB:$pdbname /IMPLIB:$libname RUSTENV {{rustenv}}"
rust_sysroot = rust_sysroot_relative
# Since the above commands only updates the .lib file when it changes,
# ask Ninja to check if the timestamp actually changed to know if
# downstream dependencies should be recompiled.
restat = true
}
tool("rust_macro") {
# E.g. "foo.dll":
dllname = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
pdbname = "$dllname.pdb"
rspfile = "$dllname.rsp"
depfile = "$dllname.d"
pool = "//build/toolchain:link_pool($default_toolchain)"
default_output_extension = ".dll"
default_output_dir = "{{root_out_dir}}"
description = "RUST(MACRO) {{output}}"
outputs = [
# The first entry here is used for dependency tracking. Proc macros
# are consumed as dlls directly, loaded a runtime, so the dll is the
# primary output here. If we make a .lib file the primary output, we
# end up trying to load the .lib file as a procmacro which fails.
#
# Since depending on a macro target for linking would fail (it would
# try to link primary .dll target) we omit the .lib here entirely.
dllname,
pdbname,
]
runtime_outputs = outputs
rspfile_content = "{{rustdeps}} {{externs}} SOURCES {{sources}}"
dynamic_link_switch = ""
command = "\"$python_path\" \"$rustc_wrapper\" --target-windows --rustc=$rustc --depfile=$depfile --rsp=$rspfile -- $rustc_windows_args --emit=dep-info=$depfile,link -o $dllname LDFLAGS {{ldflags}} $sys_lib_flags /PDB:$pdbname RUSTENV {{rustenv}}"
rust_sysroot = rust_sysroot_relative
# Since the above commands only updates the .lib file when it changes,
# ask Ninja to check if the timestamp actually changed to know if
# downstream dependencies should be recompiled.
restat = true
}
}
tool("alink") {
rspfile = "{{output}}.rsp"
command = "$linker_wrapper$lib \"/OUT:{{output}}\" /nologo {{arflags}} \"@$rspfile\""
description = "LIB {{output}}"
outputs = [
# Ignore {{output_extension}} and always use .lib, there's no reason to
# allow targets to override this extension on Windows.
"{{output_dir}}/{{target_output_name}}.lib",
]
default_output_extension = ".lib"
default_output_dir = "{{target_out_dir}}"
# The use of inputs_newline is to work around a fixed per-line buffer
# size in the linker.
rspfile_content = "{{inputs_newline}}"
}
tool("solink") {
# E.g. "foo.dll":
dllname = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
libname = "${dllname}.lib" # e.g. foo.dll.lib
pdbname = "${dllname}.pdb"
rspfile = "${dllname}.rsp"
pool = "//build/toolchain:link_pool($default_toolchain)"
command = "$linker_wrapper$link$cc_linkflags \"/OUT:$dllname\" /nologo ${sys_lib_flags} \"/IMPLIB:$libname\" /DLL \"/PDB:$pdbname\" \"@$rspfile\""
default_output_extension = ".dll"
default_output_dir = "{{root_out_dir}}"
description = "LINK(DLL) {{output}}"
outputs = [
dllname,
libname,
pdbname,
]
link_output = libname
depend_output = libname
runtime_outputs = [
dllname,
pdbname,
]
# Since the above commands only updates the .lib file when it changes,
# ask Ninja to check if the timestamp actually changed to know if
# downstream dependencies should be recompiled.
restat = true
# The use of inputs_newline is to work around a fixed per-line buffer
# size in the linker.
rspfile_content =
"{{libs}} {{solibs}} {{inputs_newline}} {{ldflags}} {{rlibs}}"
}
tool("solink_module") {
# E.g. "foo.dll":
dllname = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
pdbname = "${dllname}.pdb"
rspfile = "${dllname}.rsp"
pool = "//build/toolchain:link_pool($default_toolchain)"
command = "$linker_wrapper$link$cc_linkflags \"/OUT:$dllname\" /nologo ${sys_lib_flags} /DLL \"/PDB:$pdbname\" \"@$rspfile\""
default_output_extension = ".dll"
default_output_dir = "{{root_out_dir}}"
description = "LINK_MODULE(DLL) {{output}}"
outputs = [
dllname,
pdbname,
]
runtime_outputs = outputs
# The use of inputs_newline is to work around a fixed per-line buffer
# size in the linker.
rspfile_content =
"{{libs}} {{solibs}} {{inputs_newline}} {{ldflags}} {{rlibs}}"
}
tool("link") {
exename = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
pdbname = "$exename.pdb"
rspfile = "$exename.rsp"
pool = "//build/toolchain:link_pool($default_toolchain)"
command = "$linker_wrapper$link$cc_linkflags \"/OUT:$exename\" /nologo ${sys_lib_flags} \"/PDB:$pdbname\" \"@$rspfile\""
default_output_extension = ".exe"
default_output_dir = "{{root_out_dir}}"
description = "LINK {{output}}"
outputs = [
exename,
pdbname,
]
runtime_outputs = outputs
# The use of inputs_newline is to work around a fixed per-line buffer
# size in the linker.
rspfile_content =
"{{inputs_newline}} {{libs}} {{solibs}} {{ldflags}} {{rlibs}}"
}
# These two are really entirely generic, but have to be repeated in
# each toolchain because GN doesn't allow a template to be used here.
# See //build/toolchain/toolchain.gni for details.
tool("stamp") {
command = stamp_command
description = stamp_description
pool = "//build/toolchain:action_pool($default_toolchain)"
}
tool("copy") {
command = copy_command
description = copy_description
pool = "//build/toolchain:action_pool($default_toolchain)"
}
tool("action") {
pool = "//build/toolchain:action_pool($default_toolchain)"
}
}
}
template("msvc_rust_host_build_tools_toolchain") {
assert(defined(invoker.toolchain_args))
if (enable_rust) {
msvc_toolchain("${target_name}_for_rust_host_build_tools") {
forward_variables_from(invoker,
"*",
[
"toolchain_args",
"visibility",
"testonly",
])
toolchain_args = {
# Populate toolchain args from the invoker.
forward_variables_from(invoker.toolchain_args, "*")
toolchain_for_rust_host_build_tools = true
# The host build tools are static release builds to make the Chromium
# build faster. They do not need PGO etc, so no official builds.
is_debug = false
is_component_build = false
is_official_build = false
use_clang_coverage = false
use_sanitizer_coverage = false
generate_linker_map = false
}
}
} else {
not_needed(invoker, "*")
not_needed([ "target_name" ])
}
}
template("win_toolchains") {
# On Windows, cross-compile for x86 changes the `host_toolchain`
# into x86 too so as to avoid compiling things twice (see
# //build/config/BUILDCONFIG.gn). But the prebuilt stdlib does not
# exist for Windows x86 and it's exceedingly difficult to get it
# built from a single build_rust.py invocation. So we just don't follow
# along in the `msvc_rust_host_build_tools_toolchain` toolchains, and
# always use the host cpu type (which will be x64 in that case). Things
# built with these toolchains are never built for the target_cpu anyhow,
# so the optimization there does not benefit them.
#
# Thus, in msvc_rust_host_build_tools_toolchain:
# * Use `rust_host_toolchain_arch` instead of `toolchain_arch`.
# * Use `rust_host_win_toolchain_data` instead of `win_toolchain_data`.
assert(defined(invoker.toolchain_arch))
toolchain_arch = invoker.toolchain_arch
rust_host_toolchain_arch = host_cpu
# The toolchain data for `msvc_toolchain()`.
if (toolchain_arch == "x86") {
win_toolchain_data = win_toolchain_data_x86
} else if (toolchain_arch == "x64") {
win_toolchain_data = win_toolchain_data_x64
} else if (toolchain_arch == "arm64") {
win_toolchain_data = win_toolchain_data_arm64
} else {
error("Unsupported toolchain_arch, add it to win_toolchain_data.gni")
}
# The toolchain data for `msvc_rust_host_build_tools_toolchain()`.
if (rust_host_toolchain_arch == "x86") {
rust_host_win_toolchain_data = win_toolchain_data_x86
} else if (rust_host_toolchain_arch == "x64") {
rust_host_win_toolchain_data = win_toolchain_data_x64
} else if (rust_host_toolchain_arch == "arm64") {
rust_host_win_toolchain_data = win_toolchain_data_arm64
} else {
error(
"Unsupported rust_host_toolchain_arch, add it to win_toolchain_data.gni")
}
# The toolchain using MSVC only makes sense when not doing cross builds.
# Chromium exclusively uses the win_clang_ toolchain below, but V8 and
# WebRTC still use this MSVC toolchain in some cases.
if (host_os == "win") {
if (defined(invoker.cl_toolchain_prefix)) {
cl_toolchain_prefix = invoker.cl_toolchain_prefix
} else {
cl_toolchain_prefix = ""
}
msvc_toolchain(cl_toolchain_prefix + target_name) {
environment = "environment." + toolchain_arch
cl = "\"${win_toolchain_data.vc_bin_dir}/cl.exe\""
toolchain_args = {
if (defined(invoker.toolchain_args)) {
forward_variables_from(invoker.toolchain_args, "*")
}
is_clang = false
use_clang_coverage = false
current_os = "win"
current_cpu = toolchain_arch
}
}
msvc_rust_host_build_tools_toolchain(cl_toolchain_prefix + target_name) {
environment = "environment." + rust_host_toolchain_arch
cl = "\"${rust_host_win_toolchain_data.vc_bin_dir}/cl.exe\""
toolchain_args = {
if (defined(invoker.toolchain_args)) {
forward_variables_from(invoker.toolchain_args, "*")
}
is_clang = false
use_clang_coverage = false
current_os = "win"
current_cpu = rust_host_toolchain_arch
}
}
}
if (defined(invoker.clang_toolchain_prefix)) {
clang_toolchain_prefix = invoker.clang_toolchain_prefix
} else {
clang_toolchain_prefix = "win_clang_"
}
_clang_lib_dir =
rebase_path("$clang_base_path/lib/clang/$clang_version/lib/windows",
root_build_dir)
if (host_os == "win") {
# And to match the other -libpath flags.
_clang_lib_dir = string_replace(_clang_lib_dir, "/", "\\")
}
msvc_toolchain(clang_toolchain_prefix + target_name) {
environment = "environment." + toolchain_arch
cl = "${_clang_bin_path}/clang-cl${_exe}"
sys_include_flags = "${win_toolchain_data.include_flags_imsvc}"
if (use_lld) {
sys_lib_flags = "-libpath:$_clang_lib_dir " +
"${win_toolchain_data.libpath_lldlink_flags}"
}
toolchain_args = {
if (defined(invoker.toolchain_args)) {
forward_variables_from(invoker.toolchain_args, "*")
}
is_clang = true
current_os = "win"
current_cpu = toolchain_arch
}
}
msvc_rust_host_build_tools_toolchain(clang_toolchain_prefix + target_name) {
environment = "environment." + rust_host_toolchain_arch
cl = "${_clang_bin_path}/clang-cl${_exe}"
sys_include_flags = "${rust_host_win_toolchain_data.include_flags_imsvc}"
if (use_lld) {
sys_lib_flags = "-libpath:$_clang_lib_dir " +
"${rust_host_win_toolchain_data.libpath_lldlink_flags}"
}
toolchain_args = {
if (defined(invoker.toolchain_args)) {
forward_variables_from(invoker.toolchain_args, "*")
}
is_clang = true
current_os = "win"
current_cpu = rust_host_toolchain_arch
}
}
}
