1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
# Copyright 2020 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.
import("//build_overrides/pigweed.gni")
# Default configs and dependencies provided by the toolchain. These
# are applied to all of the pw_* target types. These are set from a toolchain's
# toolchain_args scope with the following argument names:
#
# default_configs
# default_public_deps
# remove_default_configs
# remove_default_public_deps
#
# Because of how GN handles default vs non-default toolchains, these only apply
# for for non-default toolchains. A non-default toolchain invocation occurs
# when a toolchain is specified in parenthesis after the name of a build target
# in a dependency list. For example:
#
# group("foo_group") {
# deps = [ //pw_some_module(//pw_toolchain:not_default) ]
# }
#
# The default toolchain is never used by Pigweed to build C/C++ since
# toolchain_args of that toolchain are ignored by GN.
#
# DO NOT RELY ON THIS: Use pw_build_defaults instead!
# This is exposed as public because it is needed by both defaults.gni and
# build_target.gni, and it helps surface the design of the GN build
# architecture.
pw_build_INTERNAL_DEFAULTS = {
# This is a little odd, but it's done for backwards compatibility. See the
# referenced .gni file if you want more information.
import("$dir_pw_build/gn_internal/defaults.gni")
}
declare_args() {
# Controls the default visibility of C/C++ libraries and executables
# (pw_source_set, pw_static_library, pw_shared_library pw_executable). This
# can be "*" or a list of paths.
#
# This is useful for limiting usage of Pigweed modules via an explicit
# allowlist. For the GN build to work, pw_build_DEFAULT_VISIBILITY must always
# at least include the Pigweed repository ("$dir_pigweed/*").
#
# Explicitly setting a target's visibility overrides this default.
pw_build_DEFAULT_VISIBILITY = [ "*" ]
}
# These are the default configs automatically applied to every pw_* C/C++ build
# step regardless of toolchain. If you want to omit one of these from your
# toolchain, add the undesired config to pw_build_REMOVE_DEFAULT_CONFIGS.
#
# This is not the default value of pw_build_DEFAULT_CONFIGS because it would
# be too easy to accidentally clobber.
pigweed_default_configs = [
"$dir_pw_build:colorize_output",
"$dir_pw_build:debugging",
"$dir_pw_build:reduced_size",
"$dir_pw_build:strict_warnings",
"$dir_pw_build:toolchain_cpp_standard",
"$dir_pw_build:relative_paths",
]
# Some Projects rely on this, so it is being retained for backwards
# compatibilty. Using these is not recommended; prefer to use the pw_* target
# types directly.
pw_build_defaults = {
configs = pw_build_INTERNAL_DEFAULTS.default_configs
public_deps = pw_build_INTERNAL_DEFAULTS.default_public_deps
if (pw_build_INTERNAL_DEFAULTS.remove_default_configs != []) {
# Add them first to ensure they are present to be removed.
configs += pw_build_INTERNAL_DEFAULTS.remove_default_configs
configs -= pw_build_INTERNAL_DEFAULTS.remove_default_configs
}
if (pw_build_INTERNAL_DEFAULTS.remove_default_public_deps != []) {
# Add them first to ensure they are present to be removed.
public_deps += pw_build_INTERNAL_DEFAULTS.remove_default_public_deps
public_deps -= pw_build_INTERNAL_DEFAULTS.remove_default_public_deps
}
if (pw_build_DEFAULT_VISIBILITY != [ "*" ]) {
visibility = pw_build_DEFAULT_VISIBILITY
}
}
|
