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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
// Copyright 2021 Google Inc. All rights reserved.
//
// 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
//
// http://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.
package bazel
import (
"fmt"
"strings"
)
const (
// ArchType names in arch.go
archArm = "arm"
archArm64 = "arm64"
archX86 = "x86"
archX86_64 = "x86_64"
// OsType names in arch.go
osAndroid = "android"
osDarwin = "darwin"
osLinux = "linux_glibc"
osLinuxMusl = "linux_musl"
osLinuxBionic = "linux_bionic"
osWindows = "windows"
// Targets in arch.go
osArchAndroidArm = "android_arm"
osArchAndroidArm64 = "android_arm64"
osArchAndroidX86 = "android_x86"
osArchAndroidX86_64 = "android_x86_64"
osArchDarwinArm64 = "darwin_arm64"
osArchDarwinX86_64 = "darwin_x86_64"
osArchLinuxX86 = "linux_glibc_x86"
osArchLinuxX86_64 = "linux_glibc_x86_64"
osArchLinuxMuslX86 = "linux_musl_x86"
osArchLinuxMuslX86_64 = "linux_musl_x86_64"
osArchLinuxBionicArm64 = "linux_bionic_arm64"
osArchLinuxBionicX86_64 = "linux_bionic_x86_64"
osArchWindowsX86 = "windows_x86"
osArchWindowsX86_64 = "windows_x86_64"
// This is the string representation of the default condition wherever a
// configurable attribute is used in a select statement, i.e.
// //conditions:default for Bazel.
//
// This is consistently named "conditions_default" to mirror the Soong
// config variable default key in an Android.bp file, although there's no
// integration with Soong config variables (yet).
ConditionsDefaultConfigKey = "conditions_default"
ConditionsDefaultSelectKey = "//conditions:default"
productVariableBazelPackage = "//build/bazel/product_variables"
)
var (
// These are the list of OSes and architectures with a Bazel config_setting
// and constraint value equivalent. These exist in arch.go, but the android
// package depends on the bazel package, so a cyclic dependency prevents
// using those variables here.
// A map of architectures to the Bazel label of the constraint_value
// for the @platforms//cpu:cpu constraint_setting
platformArchMap = map[string]string{
archArm: "//build/bazel/platforms/arch:arm",
archArm64: "//build/bazel/platforms/arch:arm64",
archX86: "//build/bazel/platforms/arch:x86",
archX86_64: "//build/bazel/platforms/arch:x86_64",
ConditionsDefaultConfigKey: ConditionsDefaultSelectKey, // The default condition of as arch select map.
}
// A map of target operating systems to the Bazel label of the
// constraint_value for the @platforms//os:os constraint_setting
platformOsMap = map[string]string{
osAndroid: "//build/bazel/platforms/os:android",
osDarwin: "//build/bazel/platforms/os:darwin",
osLinux: "//build/bazel/platforms/os:linux",
osLinuxMusl: "//build/bazel/platforms/os:linux_musl",
osLinuxBionic: "//build/bazel/platforms/os:linux_bionic",
osWindows: "//build/bazel/platforms/os:windows",
ConditionsDefaultConfigKey: ConditionsDefaultSelectKey, // The default condition of an os select map.
}
platformOsArchMap = map[string]string{
osArchAndroidArm: "//build/bazel/platforms/os_arch:android_arm",
osArchAndroidArm64: "//build/bazel/platforms/os_arch:android_arm64",
osArchAndroidX86: "//build/bazel/platforms/os_arch:android_x86",
osArchAndroidX86_64: "//build/bazel/platforms/os_arch:android_x86_64",
osArchDarwinArm64: "//build/bazel/platforms/os_arch:darwin_arm64",
osArchDarwinX86_64: "//build/bazel/platforms/os_arch:darwin_x86_64",
osArchLinuxX86: "//build/bazel/platforms/os_arch:linux_glibc_x86",
osArchLinuxX86_64: "//build/bazel/platforms/os_arch:linux_glibc_x86_64",
osArchLinuxMuslX86: "//build/bazel/platforms/os_arch:linux_musl_x86",
osArchLinuxMuslX86_64: "//build/bazel/platforms/os_arch:linux_musl_x86_64",
osArchLinuxBionicArm64: "//build/bazel/platforms/os_arch:linux_bionic_arm64",
osArchLinuxBionicX86_64: "//build/bazel/platforms/os_arch:linux_bionic_x86_64",
osArchWindowsX86: "//build/bazel/platforms/os_arch:windows_x86",
osArchWindowsX86_64: "//build/bazel/platforms/os_arch:windows_x86_64",
ConditionsDefaultConfigKey: ConditionsDefaultSelectKey, // The default condition of an os select map.
}
)
// basic configuration types
type configurationType int
const (
noConfig configurationType = iota
arch
os
osArch
productVariables
)
func (ct configurationType) String() string {
return map[configurationType]string{
noConfig: "no_config",
arch: "arch",
os: "os",
osArch: "arch_os",
productVariables: "product_variables",
}[ct]
}
func (ct configurationType) validateConfig(config string) {
switch ct {
case noConfig:
if config != "" {
panic(fmt.Errorf("Cannot specify config with %s, but got %s", ct, config))
}
case arch:
if _, ok := platformArchMap[config]; !ok {
panic(fmt.Errorf("Unknown arch: %s", config))
}
case os:
if _, ok := platformOsMap[config]; !ok {
panic(fmt.Errorf("Unknown os: %s", config))
}
case osArch:
if _, ok := platformOsArchMap[config]; !ok {
panic(fmt.Errorf("Unknown os+arch: %s", config))
}
case productVariables:
// do nothing
default:
panic(fmt.Errorf("Unrecognized ConfigurationType %d", ct))
}
}
// SelectKey returns the Bazel select key for a given configurationType and config string.
func (ct configurationType) SelectKey(config string) string {
ct.validateConfig(config)
switch ct {
case noConfig:
panic(fmt.Errorf("SelectKey is unnecessary for noConfig ConfigurationType "))
case arch:
return platformArchMap[config]
case os:
return platformOsMap[config]
case osArch:
return platformOsArchMap[config]
case productVariables:
if config == ConditionsDefaultConfigKey {
return ConditionsDefaultSelectKey
}
return fmt.Sprintf("%s:%s", productVariableBazelPackage, strings.ToLower(config))
default:
panic(fmt.Errorf("Unrecognized ConfigurationType %d", ct))
}
}
var (
// Indicating there is no configuration axis
NoConfigAxis = ConfigurationAxis{configurationType: noConfig}
// An axis for architecture-specific configurations
ArchConfigurationAxis = ConfigurationAxis{configurationType: arch}
// An axis for os-specific configurations
OsConfigurationAxis = ConfigurationAxis{configurationType: os}
// An axis for arch+os-specific configurations
OsArchConfigurationAxis = ConfigurationAxis{configurationType: osArch}
)
// ProductVariableConfigurationAxis returns an axis for the given product variable
func ProductVariableConfigurationAxis(variable string) ConfigurationAxis {
return ConfigurationAxis{
configurationType: productVariables,
subType: variable,
}
}
// ConfigurationAxis is an independent axis for configuration, there should be no overlap between
// elements within an axis.
type ConfigurationAxis struct {
configurationType
// some configuration types (e.g. productVariables) have multiple independent axes, subType helps
// distinguish between them without needing to list all 17 product variables.
subType string
}
func (ca *ConfigurationAxis) less(other ConfigurationAxis) bool {
if ca.configurationType < other.configurationType {
return true
}
return ca.subType < other.subType
}
|