1 // Copyright 2021 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 #pragma once 15 16 #include <cstddef> 17 18 #include "pw_span/span.h" 19 20 namespace pw::build_info { 21 22 // Build IDs may be generated with several different algorithms. The largest of 23 // these (aside from user-provided build IDs) are a fixed size of 20 bytes. 24 inline constexpr size_t kMaxBuildIdSizeBytes = 20; 25 26 // Reads a GNU build ID from the address starting at the address of the 27 // `gnu_build_id_begin` symbol. This must be manually explicitly provided as 28 // part of a linker script. See build_id_linker_snippet.ld for an example. 29 span<const std::byte> BuildId(); 30 31 } // namespace pw::build_info 32