xref: /aosp_15_r20/external/pigweed/pw_toolchain_bazel/flag_sets/BUILD.bazel (revision 61c4878ac05f98d0ceed94b57d316916de578985) 
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
15load(
16    "//cc_toolchain:defs.bzl",
17    "pw_cc_flag_set",
18)
19
20package(default_visibility = ["//visibility:public"])
21
22licenses(["notice"])
23
24# Optimization level option
25pw_cc_flag_set(
26    name = "o2",
27    actions = [
28        "@pw_toolchain//actions:all_c_compiler_actions",
29        "@pw_toolchain//actions:all_cpp_compiler_actions",
30        "@pw_toolchain//actions:all_link_actions",
31    ],
32    flags = ["-O2"],
33)
34
35# Optimization aggressively for size rather than speed option
36pw_cc_flag_set(
37    name = "oz",
38    actions = [
39        "@pw_toolchain//actions:all_c_compiler_actions",
40        "@pw_toolchain//actions:all_cpp_compiler_actions",
41        "@pw_toolchain//actions:all_link_actions",
42    ],
43    flags = ["-Oz"],
44)
45
46# Prevent relative paths from being converted to absolute paths.
47pw_cc_flag_set(
48    name = "no_canonical_prefixes",
49    actions = [
50        "@pw_toolchain//actions:all_c_compiler_actions",
51        "@pw_toolchain//actions:all_cpp_compiler_actions",
52    ],
53    flags = ["-no-canonical-prefixes"],
54)
55
56# Compile without runtime type information (RTTI). This produces smaller binaries.
57pw_cc_flag_set(
58    name = "no_rtti",
59    actions = ["@pw_toolchain//actions:all_cpp_compiler_actions"],
60    flags = ["-fno-rtti"],
61)
62
63# Allow uses of the register keyword, which may appear in C headers.
64pw_cc_flag_set(
65    name = "wno_register",
66    actions = ["@pw_toolchain//actions:all_cpp_compiler_actions"],
67    flags = ["-Wno-register"],
68)
69
70# Compile for the C++17 standard.
71pw_cc_flag_set(
72    name = "c++17",
73    actions = [
74        "@pw_toolchain//actions:all_cpp_compiler_actions",
75        "@pw_toolchain//actions:all_link_actions",
76    ],
77    flags = ["-std=c++17"],
78)
79
80# Compile for the C++20 standard.
81pw_cc_flag_set(
82    name = "c++20",
83    actions = [
84        "@pw_toolchain//actions:all_cpp_compiler_actions",
85        "@pw_toolchain//actions:all_link_actions",
86    ],
87    flags = ["-std=c++20"],
88)
89
90# Issue a warning when a class appears to be polymorphic, yet it declares a
91# non-virtual destructor
92pw_cc_flag_set(
93    name = "wnon_virtual_dtor",
94    actions = ["@pw_toolchain//actions:all_cpp_compiler_actions"],
95    flags = ["-Wnon-virtual-dtor"],
96)
97
98# Standard compiler flags to reduce output binary size.
99pw_cc_flag_set(
100    name = "reduced_size",
101    actions = [
102        "@pw_toolchain//actions:all_c_compiler_actions",
103        "@pw_toolchain//actions:all_cpp_compiler_actions",
104    ],
105    flags = [
106        "-fno-common",
107        "-fno-exceptions",
108        "-ffunction-sections",
109        "-fdata-sections",
110    ],
111)
112
113pw_cc_flag_set(
114    name = "debugging",
115    actions = [
116        "@pw_toolchain//actions:all_c_compiler_actions",
117        "@pw_toolchain//actions:all_cpp_compiler_actions",
118    ],
119    flags = ["-g"],
120)
121
122pw_cc_flag_set(
123    name = "asan",
124    actions = [
125        "@pw_toolchain//actions:all_compiler_actions",
126        "@pw_toolchain//actions:all_link_actions",
127    ],
128    flags = [
129        "-fsanitize=address",
130        "-DADDRESS_SANITIZER",
131    ],
132)
133
134# TODO: https://pwbug.dev/346388161 - Push this to upstream rules_cc.
135pw_cc_flag_set(
136    name = "ubsan",
137    actions = [
138        "@pw_toolchain//actions:all_compiler_actions",
139        "@pw_toolchain//actions:all_link_actions",
140    ],
141    flags = [
142        "-fsanitize=undefined",
143        "-DUNDEFINED_SANITIZER",
144    ],
145)
146
147# TODO: https://pwbug.dev/346388161 - Push this to upstream rules_cc.
148pw_cc_flag_set(
149    name = "tsan",
150    actions = [
151        "@pw_toolchain//actions:all_compiler_actions",
152        "@pw_toolchain//actions:all_link_actions",
153    ],
154    flags = [
155        "-fsanitize=thread",
156        "-DTHREAD_SANITIZER",
157    ],
158)
159
160pw_cc_flag_set(
161    name = "fuzztest",
162    actions = [
163        "@pw_toolchain//actions:all_compiler_actions",
164        "@pw_toolchain//actions:all_link_actions",
165    ],
166    flags = [
167        "-mcrc32",
168        "-DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION",
169        "-UNDEBUG",
170        "-D_LIBCPP_ENABLE_ASSERTIONS=1",
171    ],
172)
173