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
216
217
218
219
220
|
// Copyright 2017 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 cc
import (
"android/soong/android"
"android/soong/etc"
"strings"
)
var (
llndkLibrarySuffix = ".llndk"
)
// Holds properties to describe a stub shared library based on the provided version file.
type llndkLibraryProperties struct {
// Relative path to the symbol map.
// An example file can be seen here: TODO(danalbert): Make an example.
Symbol_file *string
// Whether to export any headers as -isystem instead of -I. Mainly for use by
// bionic/libc.
Export_headers_as_system *bool
// Which headers to process with versioner. This really only handles
// bionic/libc/include right now.
Export_preprocessed_headers []string
// Whether the system library uses symbol versions.
Unversioned *bool
// list of llndk headers to re-export include directories from.
Export_llndk_headers []string
// list of directories relative to the Blueprints file that willbe added to the include path
// (using -I) for any module that links against the LLNDK variant of this module, replacing
// any that were listed outside the llndk clause.
Override_export_include_dirs []string
// whether this module can be directly depended upon by libs that are installed
// to /vendor and /product.
// When set to true, this module can only be depended on by VNDK libraries, not
// vendor nor product libraries. This effectively hides this module from
// non-system modules. Default value is false.
Private *bool
// if true, make this module available to provide headers to other modules that set
// llndk.symbol_file.
Llndk_headers *bool
}
func makeLlndkVars(ctx android.MakeVarsContext) {
// Make uses LLNDK_MOVED_TO_APEX_LIBRARIES to avoid installing libraries on /system if
// they been moved to an apex.
movedToApexLlndkLibraries := make(map[string]bool)
ctx.VisitAllModules(func(module android.Module) {
if library := moduleLibraryInterface(module); library != nil && library.hasLLNDKStubs() {
// Skip bionic libs, they are handled in different manner
name := library.implementationModuleName(module.(*Module).BaseModuleName())
if module.(android.ApexModule).DirectlyInAnyApex() && !isBionic(name) {
movedToApexLlndkLibraries[name] = true
}
}
})
ctx.Strict("LLNDK_MOVED_TO_APEX_LIBRARIES",
strings.Join(android.SortedKeys(movedToApexLlndkLibraries), " "))
}
func init() {
RegisterLlndkLibraryTxtType(android.InitRegistrationContext)
}
func RegisterLlndkLibraryTxtType(ctx android.RegistrationContext) {
ctx.RegisterParallelSingletonModuleType("llndk_libraries_txt", llndkLibrariesTxtFactory)
}
type llndkLibrariesTxtModule struct {
android.SingletonModuleBase
outputFile android.OutputPath
moduleNames []string
fileNames []string
}
var _ etc.PrebuiltEtcModule = &llndkLibrariesTxtModule{}
var _ android.OutputFileProducer = &llndkLibrariesTxtModule{}
// llndk_libraries_txt is a singleton module whose content is a list of LLNDK libraries
// generated by Soong but can be referenced by other modules.
// For example, apex_vndk can depend on these files as prebuilt.
// Make uses LLNDK_LIBRARIES to determine which libraries to install.
// HWASAN is only part of the LL-NDK in builds in which libc depends on HWASAN.
// Therefore, by removing the library here, we cause it to only be installed if libc
// depends on it.
func llndkLibrariesTxtFactory() android.SingletonModule {
m := &llndkLibrariesTxtModule{}
android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon)
return m
}
func (txt *llndkLibrariesTxtModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
filename := txt.Name()
txt.outputFile = android.PathForModuleOut(ctx, filename).OutputPath
installPath := android.PathForModuleInstall(ctx, "etc")
ctx.InstallFile(installPath, filename, txt.outputFile)
}
func (txt *llndkLibrariesTxtModule) GenerateSingletonBuildActions(ctx android.SingletonContext) {
if txt.outputFile.String() == "" {
// Skip if target file path is empty
return
}
ctx.VisitAllModules(func(m android.Module) {
if c, ok := m.(*Module); ok && c.VendorProperties.IsLLNDK && !c.Header() && !c.IsVndkPrebuiltLibrary() {
filename, err := getVndkFileName(c)
if err != nil {
ctx.ModuleErrorf(m, "%s", err)
}
if !strings.HasPrefix(ctx.ModuleName(m), "libclang_rt.hwasan") {
txt.moduleNames = append(txt.moduleNames, ctx.ModuleName(m))
}
txt.fileNames = append(txt.fileNames, filename)
}
})
txt.moduleNames = android.SortedUniqueStrings(txt.moduleNames)
txt.fileNames = android.SortedUniqueStrings(txt.fileNames)
android.WriteFileRule(ctx, txt.outputFile, strings.Join(txt.fileNames, "\n"))
}
func (txt *llndkLibrariesTxtModule) AndroidMkEntries() []android.AndroidMkEntries {
return []android.AndroidMkEntries{{
Class: "ETC",
OutputFile: android.OptionalPathForPath(txt.outputFile),
ExtraEntries: []android.AndroidMkExtraEntriesFunc{
func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
entries.SetString("LOCAL_MODULE_STEM", txt.outputFile.Base())
},
},
}}
}
func (txt *llndkLibrariesTxtModule) MakeVars(ctx android.MakeVarsContext) {
ctx.Strict("LLNDK_LIBRARIES", strings.Join(txt.moduleNames, " "))
}
// PrebuiltEtcModule interface
func (txt *llndkLibrariesTxtModule) OutputFile() android.OutputPath {
return txt.outputFile
}
// PrebuiltEtcModule interface
func (txt *llndkLibrariesTxtModule) BaseDir() string {
return "etc"
}
// PrebuiltEtcModule interface
func (txt *llndkLibrariesTxtModule) SubDir() string {
return ""
}
func (txt *llndkLibrariesTxtModule) OutputFiles(tag string) (android.Paths, error) {
return android.Paths{txt.outputFile}, nil
}
func llndkMutator(mctx android.BottomUpMutatorContext) {
m, ok := mctx.Module().(*Module)
if !ok {
return
}
if shouldSkipLlndkMutator(mctx, m) {
return
}
lib, isLib := m.linker.(*libraryDecorator)
prebuiltLib, isPrebuiltLib := m.linker.(*prebuiltLibraryLinker)
if m.InVendorOrProduct() && isLib && lib.hasLLNDKStubs() {
m.VendorProperties.IsLLNDK = true
}
if m.InVendorOrProduct() && isPrebuiltLib && prebuiltLib.hasLLNDKStubs() {
m.VendorProperties.IsLLNDK = true
}
if m.IsVndkPrebuiltLibrary() && !m.IsVndk() {
m.VendorProperties.IsLLNDK = true
}
}
// Check for modules that mustn't be LLNDK
func shouldSkipLlndkMutator(mctx android.BottomUpMutatorContext, m *Module) bool {
if !m.Enabled(mctx) {
return true
}
if !m.Device() {
return true
}
if m.Target().NativeBridge == android.NativeBridgeEnabled {
return true
}
return false
}
|