| # Copyright 2020 The Pigweed Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| # use this file except in compliance with the License. You may obtain a copy of |
| # the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| # License for the specific language governing permissions and limitations under |
| # the License. |
| |
| # This BUILDCONFIG file tells GN how to build upstream Pigweed. When starting a |
| # new project, you'll need to copy this file to your project and then modify it |
| # to fit your needs. Due to the way Pigweed handles file imports, you won't be |
| # able to simply import this file in your own BUILDCONFIG.gn. |
| # |
| # Keep in mind when importing .gni files that `gn format` will try to |
| # alphabetically sort imports unless they're separated by comments. For this |
| # file, import order matters (modules.gni MUST be imported first). |
| |
| # This is imported into a scope so as not to pollute the global variable space. |
| _pigweed_directory = { |
| import("//build_overrides/pigweed.gni") |
| } |
| |
| _pigweed_modules = { |
| # Import target configuration. This is what "completes" a Pigweed |
| # configuration. This file should set a default toolchain, configure |
| # pw_executable, select backends to build against, and provide target-specific |
| # build arguments. |
| import("${_pigweed_directory.dir_pigweed}/legacy_target.gni") |
| } |
| |
| # Ensure some sort of default toolchain was provided by the target, and then |
| # set the default toolchain. |
| assert(_pigweed_modules.pw_target_toolchain != "", |
| "Build target must provide its own toolchain.") |
| |
| # The default toolchain is not used in Pigweed builds, so it is set to a dummy |
| # toolchain. The top-level BUILD.gn should stamp a group with all of the build |
| # targets and their toolchains. |
| set_default_toolchain("${_pigweed_modules.dir_pw_toolchain}/dummy") |