1# Copyright 2023 The Pigweed Authors 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); you may not 4# use this file except in compliance with the License. You may obtain a copy of 5# the License at 6# 7# https://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12# License for the specific language governing permissions and limitations under 13# the License. 14 15import("//build_overrides/pigweed.gni") 16 17import("$dir_pw_build/gn_internal/build_target.gni") 18import("$dir_pw_rust/rust.gni") 19 20# Note: In general, prefer to import target_types.gni rather than this file. 21# 22# This template wraps a configurable target type specified by the current 23# toolchain to be used for all pw_rust_library targets. A wrapper for GN's 24# built-in rust_library target, it is analogous to pw_static_library with 25# additions to support rust specific parameters such as rust edition and cargo 26# config features. 27# 28# For more information on the features provided by this template, see the full 29# docs at https://pigweed.dev/pw_build/?highlight=pw_rust_library 30template("pw_rust_library") { 31 pw_internal_build_target(target_name) { 32 forward_variables_from(invoker, "*") 33 34 if (!defined(crate_name)) { 35 crate_name = target_name 36 } 37 38 _edition = "2021" 39 if (defined(edition)) { 40 _edition = edition 41 } 42 assert(_edition == "2015" || _edition == "2018" || _edition == "2021", 43 "edition ${_edition} is not supported") 44 45 if (!defined(configs)) { 46 configs = [] 47 } 48 configs += [ "$dir_pw_build:rust_edition_${_edition}" ] 49 50 if (!defined(rustflags)) { 51 rustflags = [] 52 } 53 if (defined(features)) { 54 foreach(i, features) { 55 rustflags += [ "--cfg=feature=\"${i}\"" ] 56 } 57 } 58 59 if (!defined(underlying_target_type)) { 60 underlying_target_type = "rust_library" 61 } 62 63 crate_name = string_replace(crate_name, "-", "_") 64 output_dir = "${target_out_dir}/lib" 65 add_global_link_deps = false 66 } 67} 68