xref: /aosp_15_r20/external/open-dice/toolchains/BUILD.gn (revision 60b67249c2e226f42f35cc6cfe66c6048e0bae6b) 
1# Copyright 2020 Google LLC
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")
16import("$dir_pigweed/targets/host/target_toolchains.gni")
17import("$dir_pw_toolchain/generate_toolchain.gni")
18
19config("common_config") {
20  include_dirs = [ "//include" ]
21
22  # No language extensions, to promote portability.
23  cflags_c = [
24    "-Wvla",
25    "-std=c99",
26    "-pedantic",
27  ]
28
29  # Modern C++ for test and tooling.
30  cflags_cc = [ "-std=c++20" ]
31}
32
33config("enable_sanitizers") {
34  filter_path = rebase_path("sanitize_filter.txt", root_build_dir)
35  cflags = [
36    "-fsanitize=address,undefined,integer",
37    "-fsanitize-blacklist=$filter_path",  # inclusive-language: ignore
38  ]
39  ldflags = cflags
40  inputs = [ "sanitize_filter.txt" ]
41}
42
43config("enable_fuzzer") {
44  cflags = [
45    "-fsanitize=fuzzer",
46    "-O1",
47    "-fno-omit-frame-pointer",
48    "-fno-optimize-sibling-calls",
49  ]
50  ldflags = cflags
51}
52
53# Define a scope for each toolchain that can be fed into generate_toolchain.
54_host_debug = {
55  # Use Pigweed's host_clang_debug toolchain as a base.
56  _toolchain_base = pw_target_toolchain_host.clang_debug
57
58  # Forward everything except the defaults scope from that toolchain.
59  forward_variables_from(_toolchain_base, "*", [ "defaults" ])
60
61  defaults = {
62    # Forward everything from the base toolchain's defaults.
63    forward_variables_from(_toolchain_base.defaults, "*")
64
65    # Extend with custom build arguments for the target.
66    default_configs += [
67      "//toolchains:common_config",
68      "//toolchains:enable_sanitizers",
69    ]
70  }
71}
72
73_host_fuzz = {
74  # Use Pigweed's host_clang_debug toolchain as a base.
75  _toolchain_base = pw_target_toolchain_host.clang_debug
76
77  # Forward everything except the defaults scope from that toolchain.
78  forward_variables_from(_toolchain_base, "*", [ "defaults" ])
79
80  defaults = {
81    # Forward everything from the base toolchain's defaults.
82    forward_variables_from(_toolchain_base.defaults, "*")
83
84    # Extend with custom build arguments for the target.
85    default_configs += [
86      "//toolchains:common_config",
87      "//toolchains:enable_sanitizers",
88      "//toolchains:enable_fuzzer",
89    ]
90  }
91}
92
93_host_optimized = {
94  # Use Pigweed's host_clang_size_optimized toolchain as a base.
95  _toolchain_base = pw_target_toolchain_host.clang_size_optimized
96
97  # Forward everything except the defaults scope from that toolchain.
98  forward_variables_from(_toolchain_base, "*", [ "defaults" ])
99
100  defaults = {
101    # Forward everything from the base toolchain's defaults.
102    forward_variables_from(_toolchain_base.defaults, "*")
103
104    # Extend with custom build arguments for the target.
105    default_configs += [ "//toolchains:common_config" ]
106  }
107}
108
109# Create the actual GN toolchains.
110generate_toolchain("host_debug") {
111  forward_variables_from(_host_debug, "*")
112}
113
114generate_toolchain("host_fuzz") {
115  forward_variables_from(_host_fuzz, "*")
116}
117
118generate_toolchain("host_optimized") {
119  forward_variables_from(_host_optimized, "*")
120}
121