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
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmBinUtilsMacOSMachOLinker.h"
#include <sstream>
#include <string>
#include <vector>
#include <cm/memory>
#include "cmBinUtilsMacOSMachOOToolGetRuntimeDependenciesTool.h"
#include "cmRuntimeDependencyArchive.h"
#include "cmStringAlgorithms.h"
#include "cmSystemTools.h"
namespace {
bool IsMissingSystemDylib(std::string const& path)
{
// Starting on macOS 11, the dynamic loader has a builtin cache of
// system-provided dylib files that do not exist on the filesystem.
// Tell our caller that these are expected to be missing.
return ((cmHasLiteralPrefix(path, "/System/Library/") ||
cmHasLiteralPrefix(path, "/usr/lib/")) &&
!cmSystemTools::PathExists(path));
}
}
cmBinUtilsMacOSMachOLinker::cmBinUtilsMacOSMachOLinker(
cmRuntimeDependencyArchive* archive)
: cmBinUtilsLinker(archive)
{
}
bool cmBinUtilsMacOSMachOLinker::Prepare()
{
std::string tool = this->Archive->GetGetRuntimeDependenciesTool();
if (tool.empty()) {
tool = "otool";
}
if (tool == "otool") {
this->Tool =
cm::make_unique<cmBinUtilsMacOSMachOOToolGetRuntimeDependenciesTool>(
this->Archive);
} else {
std::ostringstream e;
e << "Invalid value for CMAKE_GET_RUNTIME_DEPENDENCIES_TOOL: " << tool;
this->SetError(e.str());
return false;
}
return true;
}
bool cmBinUtilsMacOSMachOLinker::ScanDependencies(
std::string const& file, cmStateEnums::TargetType type)
{
std::string executableFile;
if (type == cmStateEnums::EXECUTABLE) {
executableFile = file;
} else {
executableFile = this->Archive->GetBundleExecutable();
}
std::string executablePath;
if (!executableFile.empty()) {
executablePath = cmSystemTools::GetFilenamePath(executableFile);
}
return this->ScanDependencies(file, executablePath);
}
bool cmBinUtilsMacOSMachOLinker::ScanDependencies(
std::string const& file, std::string const& executablePath)
{
std::vector<std::string> libs;
std::vector<std::string> rpaths;
if (!this->Tool->GetFileInfo(file, libs, rpaths)) {
return false;
}
std::string loaderPath = cmSystemTools::GetFilenamePath(file);
return this->GetFileDependencies(libs, executablePath, loaderPath, rpaths);
}
bool cmBinUtilsMacOSMachOLinker::GetFileDependencies(
std::vector<std::string> const& names, std::string const& executablePath,
std::string const& loaderPath, std::vector<std::string> const& rpaths)
{
for (std::string const& name : names) {
if (!this->Archive->IsPreExcluded(name)) {
std::string path;
bool resolved;
if (!this->ResolveDependency(name, executablePath, loaderPath, rpaths,
path, resolved)) {
return false;
}
if (resolved) {
if (!this->Archive->IsPostExcluded(path) &&
!IsMissingSystemDylib(path)) {
auto filename = cmSystemTools::GetFilenameName(path);
bool unique;
this->Archive->AddResolvedPath(filename, path, unique);
if (unique && !this->ScanDependencies(path, executablePath)) {
return false;
}
}
} else {
this->Archive->AddUnresolvedPath(name);
}
}
}
return true;
}
bool cmBinUtilsMacOSMachOLinker::ResolveDependency(
std::string const& name, std::string const& executablePath,
std::string const& loaderPath, std::vector<std::string> const& rpaths,
std::string& path, bool& resolved)
{
resolved = false;
if (cmHasLiteralPrefix(name, "@rpath/")) {
if (!this->ResolveRPathDependency(name, executablePath, loaderPath, rpaths,
path, resolved)) {
return false;
}
} else if (cmHasLiteralPrefix(name, "@loader_path/")) {
if (!this->ResolveLoaderPathDependency(name, loaderPath, path, resolved)) {
return false;
}
} else if (cmHasLiteralPrefix(name, "@executable_path/")) {
if (!this->ResolveExecutablePathDependency(name, executablePath, path,
resolved)) {
return false;
}
} else {
resolved = true;
path = name;
}
if (resolved && !cmSystemTools::FileIsFullPath(path)) {
this->SetError("Resolved path is not absolute");
return false;
}
return true;
}
bool cmBinUtilsMacOSMachOLinker::ResolveExecutablePathDependency(
std::string const& name, std::string const& executablePath,
std::string& path, bool& resolved)
{
if (executablePath.empty()) {
resolved = false;
return true;
}
// 16 is == "@executable_path".length()
path = name;
path.replace(0, 16, executablePath);
if (!cmSystemTools::PathExists(path)) {
resolved = false;
return true;
}
resolved = true;
return true;
}
bool cmBinUtilsMacOSMachOLinker::ResolveLoaderPathDependency(
std::string const& name, std::string const& loaderPath, std::string& path,
bool& resolved)
{
if (loaderPath.empty()) {
resolved = false;
return true;
}
// 12 is "@loader_path".length();
path = name;
path.replace(0, 12, loaderPath);
if (!cmSystemTools::PathExists(path)) {
resolved = false;
return true;
}
resolved = true;
return true;
}
bool cmBinUtilsMacOSMachOLinker::ResolveRPathDependency(
std::string const& name, std::string const& executablePath,
std::string const& loaderPath, std::vector<std::string> const& rpaths,
std::string& path, bool& resolved)
{
for (std::string const& rpath : rpaths) {
std::string searchFile = name;
searchFile.replace(0, 6, rpath);
if (cmHasLiteralPrefix(searchFile, "@loader_path/")) {
if (!this->ResolveLoaderPathDependency(searchFile, loaderPath, path,
resolved)) {
return false;
}
if (resolved) {
return true;
}
} else if (cmHasLiteralPrefix(searchFile, "@executable_path/")) {
if (!this->ResolveExecutablePathDependency(searchFile, executablePath,
path, resolved)) {
return false;
}
if (resolved) {
return true;
}
} else if (cmSystemTools::PathExists(searchFile)) {
/*
* paraphrasing @ben.boeckel:
* if /b/libB.dylib is supposed to be used,
* /a/libbB.dylib will be found first if it exists. CMake tries to
* sort rpath directories to avoid this, but sometimes there is no
* right answer.
*
* I believe it is possible to resolve this using otools -l
* then checking the LC_LOAD_DYLIB command whose name is
* equal to the value of search_file, UNLESS the build
* specifically sets the RPath to paths that will match
* duplicate libs; at this point can we just point to
* user error, or is there a reason why the advantages
* to this scenario outweigh its disadvantages?
*
* Also priority seems to be the order as passed in when compiled
* so as long as this method's resolution guarantees priority
* in that manner further checking should not be necessary?
*/
path = searchFile;
resolved = true;
return true;
}
}
resolved = false;
return true;
}
|
