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Diffstat (limited to '')
-rw-r--r-- | third_party/libwebrtc/build/toolchain/toolchain.gni | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/toolchain/toolchain.gni b/third_party/libwebrtc/build/toolchain/toolchain.gni new file mode 100644 index 0000000000..6d8f162d82 --- /dev/null +++ b/third_party/libwebrtc/build/toolchain/toolchain.gni @@ -0,0 +1,107 @@ +# Copyright 2015 The Chromium Authors. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. + +# Toolchain-related configuration that may be needed outside the context of the +# toolchain() rules themselves. + +import("//build/config/chrome_build.gni") +import("//build/config/chromecast_build.gni") +import("//build_overrides/build.gni") + +declare_args() { + # If this is set to true, we use the revision in the llvm repo to determine + # the CLANG_REVISION to use, instead of the version hard-coded into + # //tools/clang/scripts/update.py. This should only be used in + # conjunction with setting the llvm_force_head_revision DEPS variable when + # `gclient runhooks` is run as well. + llvm_force_head_revision = false + + # Compile with Xcode version of clang instead of hermetic version shipped + # with the build. Used to be used iOS for official builds, but is now off by + # default for all configurations. + use_xcode_clang = false + + # Used for binary size analysis. + generate_linker_map = is_android && is_official_build +} + +if (generate_linker_map) { + assert(is_official_build || is_chromecast, + "Linker map files should only be generated when is_official_build = " + + "true or is_chromecast = true") + assert(current_os == "android" || current_os == "linux" || + target_os == "android" || target_os == "linux" || + target_os == "chromeos", + "Linker map files should only be generated for Android, Linux, " + + "or ChromeOS.") +} + +declare_args() { + clang_version = "14.0.0" +} + +# Check target_os here instead of is_ios as this file is loaded for secondary +# toolchain (host toolchain in particular) but the argument is the same for +# all toolchains. +assert(!use_xcode_clang || target_os == "ios", + "Using Xcode's clang is only supported in iOS builds") + +# Extension for shared library files (including leading dot). +if (is_apple) { + shlib_extension = ".dylib" +} else if (is_android && is_component_build) { + # By appending .cr, we prevent name collisions with libraries already + # loaded by the Android zygote. + shlib_extension = ".cr.so" +} else if (is_posix || is_fuchsia) { + shlib_extension = ".so" +} else if (is_win) { + shlib_extension = ".dll" +} else { + assert(false, "Platform not supported") +} + +# Prefix for shared library files. +if (is_posix || is_fuchsia) { + shlib_prefix = "lib" +} else { + shlib_prefix = "" +} + +# Directory for shared library files. +if (is_fuchsia) { + shlib_subdir = "/lib" +} else { + shlib_subdir = "" +} + +# While other "tool"s in a toolchain are specific to the target of that +# toolchain, the "stamp" and "copy" tools are really generic to the host; +# but each toolchain must define them separately. GN doesn't allow a +# template instantiation inside a toolchain definition, so some boilerplate +# has to be repeated in each toolchain to define these two tools. These +# four variables reduce the duplication in that boilerplate. +stamp_description = "STAMP {{output}}" +copy_description = "COPY {{source}} {{output}}" +if (host_os == "win") { + _tool_wrapper_path = + rebase_path("//build/toolchain/win/tool_wrapper.py", root_build_dir) + + stamp_command = "cmd /c type nul > \"{{output}}\"" + copy_command = + "$python_path $_tool_wrapper_path recursive-mirror {{source}} {{output}}" +} else { + stamp_command = "touch {{output}}" + copy_command = "ln -f {{source}} {{output}} 2>/dev/null || (rm -rf {{output}} && cp -af {{source}} {{output}})" +} + +# This variable is true if the current toolchain is one of the target +# toolchains, i.e. a toolchain which is being used to build the main Chrome +# binary. This generally means "not the host toolchain", but in the case where +# we're targeting the host it's true then as well. We do require current_os to +# match target_os so that for example we avoid considering Android as a target +# toolchain when targeting CrOS. +is_a_target_toolchain = + (current_toolchain != host_toolchain || + default_toolchain == host_toolchain) && current_os == target_os |