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 15load( 16 "//pw_build:pigweed.bzl", 17 "pw_cc_test", 18) 19 20package(default_visibility = ["//visibility:public"]) 21 22licenses(["notice"]) 23 24cc_library( 25 name = "build_id_header", 26 hdrs = [ 27 "public/pw_build_info/build_id.h", 28 "public/pw_build_info/util.h", 29 ], 30 includes = ["public"], 31 deps = [ 32 "//pw_span", 33 ], 34) 35 36cc_library( 37 name = "build_id", 38 srcs = [ 39 "build_id.cc", 40 "util.cc", 41 ], 42 # Automatically add the gnu build ID linker sections when building for 43 # Linux. macOS and Windows executables are not supported, and embedded 44 # targets must manually add the snippet to their linker script in a 45 # read-only section. 46 linkopts = select({ 47 # When building for Linux, the linker provides a default linker script. 48 # The add_build_id_to_default_script.ld wrapper includes the 49 # build_id_linker_snippet.ld script in a way that appends to the 50 # default linker script instead of overriding it. 51 "@platforms//os:linux": [ 52 "-T$(location add_build_id_to_default_linker_script.ld)", 53 ], 54 "//conditions:default": [], 55 }) + [ 56 "-Lpw_build_info", 57 "-Wl,--build-id=sha1", 58 ], 59 deps = select({ 60 "@platforms//os:linux": [ 61 ":add_build_id_to_default_linker_script.ld", 62 ":build_id_linker_snippet.ld", 63 ], 64 "//conditions:default": [], 65 }) + [ 66 ":build_id_header", 67 "//pw_log", 68 "//pw_preprocessor", 69 "//pw_span", 70 "//pw_string", 71 ], 72) 73 74cc_library( 75 name = "build_id_noop", 76 srcs = [ 77 "build_id_noop.cc", 78 "util.cc", 79 ], 80 deps = [ 81 ":build_id_header", 82 "//pw_log", 83 "//pw_span", 84 "//pw_string", 85 ], 86) 87 88cc_library( 89 name = "build_id_or_noop", 90 deps = select({ 91 "@platforms//os:ios": [":build_id_noop"], 92 "@platforms//os:macos": [":build_id_noop"], 93 "@platforms//os:windows": [":build_id_noop"], 94 "//conditions:default": [":build_id"], 95 }), 96) 97 98pw_cc_test( 99 name = "build_id_test", 100 srcs = ["build_id_test.cc"], 101 # This test is only compatible with linux. macOS and Windows are not 102 # supported, and embedded targets must manually add the snippet to their 103 # linker scripts 104 target_compatible_with = ["@platforms//os:linux"], 105 deps = [ 106 ":build_id", 107 "//pw_span", 108 "//pw_unit_test", 109 ], 110) 111