| # 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. |
| |
| import("//build_overrides/pigweed.gni") |
| |
| declare_args() { |
| # Default configs and dependencies targets provided by the toolchain. These |
| # are applied to all of the pw_* target types. They are set from a toolchain's |
| # toolchain_args for cross-toolchain deps, e.g. for |
| # |
| # `deps = [ //pw_some_module(//pw_toolchain:not_default) ]` |
| # |
| # The default toolchain is never used. |
| default_configs = [] |
| default_public_deps = [] |
| remove_default_configs = [] |
| |
| # Controls the default visibility of C/C++ libraries and executables |
| # (pw_source_set, pw_static_library, pw_shared_library pw_executable). This |
| # can be "*" or a list of paths. |
| # |
| # This is useful for limiting usage of Pigweed modules via an explicit |
| # allowlist. For the GN build to work, pw_build_DEFAULT_VISIBILITY must always |
| # at least include the Pigweed repository ("$dir_pigweed/*"). |
| # |
| # Explicitly setting a target's visibility overrides this default. |
| pw_build_DEFAULT_VISIBILITY = "*" |
| } |
| |
| # Combine target-specifc and target-agnostic default variables. |
| _pw_build_defaults = { |
| configs = default_configs |
| public_deps = default_public_deps |
| |
| # The target-agnostic defaults. |
| configs += [ |
| "$dir_pw_build:colorize_output", |
| "$dir_pw_build:debugging", |
| "$dir_pw_build:reduced_size", |
| "$dir_pw_build:strict_warnings", |
| "$dir_pw_build:toolchain_cpp_standard", |
| "$dir_pw_build:relative_paths", |
| ] |
| |
| if (pw_build_DEFAULT_VISIBILITY != "*") { |
| visibility = pw_build_DEFAULT_VISIBILITY |
| } |
| } |
| |
| # One more pass, to remove configs |
| pw_build_defaults = { |
| configs = [] |
| forward_variables_from(_pw_build_defaults, "*") |
| if (remove_default_configs != []) { |
| # Add them first to ensure they are present to be removed. |
| configs += remove_default_configs |
| configs -= remove_default_configs |
| } |
| } |