| // Copyright (c) 2013 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. |
| |
| #include "tools/gn/build_settings.h" |
| #include "tools/gn/functions.h" |
| #include "tools/gn/parse_tree.h" |
| #include "tools/gn/scope.h" |
| #include "tools/gn/settings.h" |
| #include "tools/gn/toolchain_manager.h" |
| |
| /* |
| set_default_toolchain: Sets the default toolchain name. |
| |
| set_default_toolchain(toolchain_label) |
| |
| The given label should identify a toolchain definition (see "toolchain"). |
| This toolchain will be used for all targets unless otherwise specified. |
| |
| This function is only valid to call during the processing of the build |
| configuration file. Since the build configuration file is processed |
| separately for each toolchain, this function will be a no-op when called |
| under any non-default toolchains. |
| |
| For example, the default toolchain should be appropriate for the current |
| environment. If the current environment is 32-bit and somebody references |
| a target with a 64-bit toolchain, we wouldn't want processing of the build |
| config file for the 64-bit toolchain to reset the default toolchain to |
| 64-bit, we want to keep it 32-bits. |
| |
| Argument: |
| |
| toolchain_label: |
| Toolchain name. |
| |
| Example: |
| |
| set_default_toolchain("//build/config/win:vs32") |
| */ |
| |
| Value ExecuteSetDefaultToolchain(Scope* scope, |
| const FunctionCallNode* function, |
| const std::vector<Value>& args, |
| Err* err) { |
| if (!scope->IsProcessingBuildConfig()) { |
| *err = Err(function->function(), "Must be called from build config.", |
| "set_default_toolchain can only be called from the build configuration " |
| "file."); |
| return Value(); |
| } |
| |
| // Ignore non-default-build-config invocations. |
| if (!scope->IsProcessingDefaultBuildConfig()) |
| return Value(); |
| |
| const SourceDir& current_dir = SourceDirForFunctionCall(function); |
| const Label& default_toolchain = ToolchainLabelForScope(scope); |
| |
| if (!EnsureSingleStringArg(function, args, err)) |
| return Value(); |
| Label toolchain_label( |
| Label::Resolve(current_dir, default_toolchain, args[0], err)); |
| if (toolchain_label.is_null()) |
| return Value(); |
| |
| ToolchainManager& mgr = |
| scope->settings()->build_settings()->toolchain_manager(); |
| mgr.SetDefaultToolchainUnlocked(toolchain_label, function->GetRange(), err); |
| return Value(); |
| } |