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
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmGeneratorExpressionDAGChecker.h"
#include <cstring>
#include <sstream>
#include <utility>
#include <cm/string_view>
#include <cmext/string_view>
#include "cmGeneratorExpressionContext.h"
#include "cmGeneratorExpressionEvaluator.h"
#include "cmGeneratorTarget.h"
#include "cmLocalGenerator.h"
#include "cmMessageType.h"
#include "cmStringAlgorithms.h"
#include "cmake.h"
cmGeneratorExpressionDAGChecker::cmGeneratorExpressionDAGChecker(
cmListFileBacktrace backtrace, cmGeneratorTarget const* target,
std::string property, const GeneratorExpressionContent* content,
cmGeneratorExpressionDAGChecker* parent)
: Parent(parent)
, Target(target)
, Property(std::move(property))
, Content(content)
, Backtrace(std::move(backtrace))
, TransitivePropertiesOnly(false)
, CMP0131(false)
{
this->Initialize();
}
cmGeneratorExpressionDAGChecker::cmGeneratorExpressionDAGChecker(
cmGeneratorTarget const* target, std::string property,
const GeneratorExpressionContent* content,
cmGeneratorExpressionDAGChecker* parent)
: Parent(parent)
, Target(target)
, Property(std::move(property))
, Content(content)
, Backtrace()
, TransitivePropertiesOnly(false)
, CMP0131(false)
{
this->Initialize();
}
void cmGeneratorExpressionDAGChecker::Initialize()
{
const auto* top = this->Top();
this->CheckResult = this->CheckGraph();
#define TEST_TRANSITIVE_PROPERTY_METHOD(METHOD) top->METHOD() ||
if (this->CheckResult == DAG &&
(CM_FOR_EACH_TRANSITIVE_PROPERTY_METHOD(
TEST_TRANSITIVE_PROPERTY_METHOD) false)) // NOLINT(*)
#undef TEST_TRANSITIVE_PROPERTY_METHOD
{
auto it = top->Seen.find(this->Target);
if (it != top->Seen.end()) {
const std::set<std::string>& propSet = it->second;
if (propSet.find(this->Property) != propSet.end()) {
this->CheckResult = ALREADY_SEEN;
return;
}
}
top->Seen[this->Target].insert(this->Property);
}
}
cmGeneratorExpressionDAGChecker::Result
cmGeneratorExpressionDAGChecker::Check() const
{
return this->CheckResult;
}
void cmGeneratorExpressionDAGChecker::ReportError(
cmGeneratorExpressionContext* context, const std::string& expr)
{
if (this->CheckResult == DAG) {
return;
}
context->HadError = true;
if (context->Quiet) {
return;
}
const cmGeneratorExpressionDAGChecker* parent = this->Parent;
if (parent && !parent->Parent) {
std::ostringstream e;
e << "Error evaluating generator expression:\n"
<< " " << expr << "\n"
<< "Self reference on target \"" << context->HeadTarget->GetName()
<< "\".\n";
context->LG->GetCMakeInstance()->IssueMessage(MessageType::FATAL_ERROR,
e.str(), parent->Backtrace);
return;
}
{
std::ostringstream e;
/* clang-format off */
e << "Error evaluating generator expression:\n"
<< " " << expr << "\n"
<< "Dependency loop found.";
/* clang-format on */
context->LG->GetCMakeInstance()->IssueMessage(MessageType::FATAL_ERROR,
e.str(), context->Backtrace);
}
int loopStep = 1;
while (parent) {
std::ostringstream e;
e << "Loop step " << loopStep << "\n"
<< " "
<< (parent->Content ? parent->Content->GetOriginalExpression() : expr)
<< "\n";
context->LG->GetCMakeInstance()->IssueMessage(MessageType::FATAL_ERROR,
e.str(), parent->Backtrace);
parent = parent->Parent;
++loopStep;
}
}
cmGeneratorExpressionDAGChecker::Result
cmGeneratorExpressionDAGChecker::CheckGraph() const
{
const cmGeneratorExpressionDAGChecker* parent = this->Parent;
while (parent) {
if (this->Target == parent->Target && this->Property == parent->Property) {
return (parent == this->Parent) ? SELF_REFERENCE : CYCLIC_REFERENCE;
}
parent = parent->Parent;
}
return DAG;
}
bool cmGeneratorExpressionDAGChecker::GetTransitivePropertiesOnly() const
{
return this->Top()->TransitivePropertiesOnly;
}
bool cmGeneratorExpressionDAGChecker::GetTransitivePropertiesOnlyCMP0131()
const
{
return this->Top()->CMP0131;
}
bool cmGeneratorExpressionDAGChecker::EvaluatingGenexExpression() const
{
return cmHasLiteralPrefix(this->Property, "TARGET_GENEX_EVAL:") ||
cmHasLiteralPrefix(this->Property, "GENEX_EVAL:");
}
bool cmGeneratorExpressionDAGChecker::EvaluatingPICExpression() const
{
return this->Top()->Property == "INTERFACE_POSITION_INDEPENDENT_CODE";
}
bool cmGeneratorExpressionDAGChecker::EvaluatingCompileExpression() const
{
cm::string_view property(this->Top()->Property);
return property == "INCLUDE_DIRECTORIES"_s ||
property == "COMPILE_DEFINITIONS"_s || property == "COMPILE_OPTIONS"_s;
}
bool cmGeneratorExpressionDAGChecker::EvaluatingLinkExpression() const
{
cm::string_view property(this->Top()->Property);
return property == "LINK_DIRECTORIES"_s || property == "LINK_OPTIONS"_s ||
property == "LINK_DEPENDS"_s || property == "LINK_LIBRARY_OVERRIDE"_s;
}
bool cmGeneratorExpressionDAGChecker::EvaluatingLinkOptionsExpression() const
{
cm::string_view property(this->Top()->Property);
return property == "LINK_OPTIONS"_s;
}
bool cmGeneratorExpressionDAGChecker::EvaluatingLinkerLauncher() const
{
cm::string_view property(this->Top()->Property);
return property.length() > cmStrLen("_LINKER_LAUNCHER") &&
property.substr(property.length() - cmStrLen("_LINKER_LAUNCHER")) ==
"_LINKER_LAUNCHER"_s;
}
bool cmGeneratorExpressionDAGChecker::EvaluatingLinkLibraries(
cmGeneratorTarget const* tgt, ForGenex genex) const
{
const auto* top = this->Top();
cm::string_view prop(top->Property);
if (tgt) {
return top->Target == tgt && prop == "LINK_LIBRARIES"_s;
}
auto result = prop == "LINK_LIBRARIES"_s ||
prop == "INTERFACE_LINK_LIBRARIES"_s ||
prop == "INTERFACE_LINK_LIBRARIES_DIRECT"_s ||
prop == "LINK_INTERFACE_LIBRARIES"_s ||
prop == "IMPORTED_LINK_INTERFACE_LIBRARIES"_s ||
cmHasLiteralPrefix(prop, "LINK_INTERFACE_LIBRARIES_") ||
cmHasLiteralPrefix(prop, "IMPORTED_LINK_INTERFACE_LIBRARIES_");
return genex == ForGenex::LINK_LIBRARY || genex == ForGenex::LINK_GROUP
? result
: (result || prop == "INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE"_s);
}
cmGeneratorExpressionDAGChecker const* cmGeneratorExpressionDAGChecker::Top()
const
{
const cmGeneratorExpressionDAGChecker* top = this;
const cmGeneratorExpressionDAGChecker* parent = this->Parent;
while (parent) {
top = parent;
parent = parent->Parent;
}
return top;
}
cmGeneratorTarget const* cmGeneratorExpressionDAGChecker::TopTarget() const
{
return this->Top()->Target;
}
enum TransitiveProperty
{
#define DEFINE_ENUM_ENTRY(NAME) NAME,
CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(DEFINE_ENUM_ENTRY)
#undef DEFINE_ENUM_ENTRY
TransitivePropertyTerminal
};
template <TransitiveProperty>
bool additionalTest(const char* const /*unused*/)
{
return false;
}
template <>
bool additionalTest<COMPILE_DEFINITIONS>(const char* const prop)
{
return cmHasLiteralPrefix(prop, "COMPILE_DEFINITIONS_");
}
#define DEFINE_TRANSITIVE_PROPERTY_METHOD(METHOD, PROPERTY) \
bool cmGeneratorExpressionDAGChecker::METHOD() const \
{ \
const char* const prop = this->Property.c_str(); \
if (strcmp(prop, #PROPERTY) == 0 || \
strcmp(prop, "INTERFACE_" #PROPERTY) == 0) { \
return true; \
} \
return additionalTest<PROPERTY>(prop); \
}
CM_FOR_EACH_TRANSITIVE_PROPERTY(DEFINE_TRANSITIVE_PROPERTY_METHOD)
#undef DEFINE_TRANSITIVE_PROPERTY_METHOD
|
