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
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmGeneratorExpressionEvaluationFile.h"
#include "cmsys/FStream.hxx"
#include <memory> // IWYU pragma: keep
#include <sstream>
#include <utility>
#include "cmGeneratedFileStream.h"
#include "cmGlobalGenerator.h"
#include "cmListFileCache.h"
#include "cmLocalGenerator.h"
#include "cmMakefile.h"
#include "cmSourceFile.h"
#include "cmSourceFileLocationKind.h"
#include "cmSystemTools.h"
#include "cmake.h"
cmGeneratorExpressionEvaluationFile::cmGeneratorExpressionEvaluationFile(
const std::string& input,
std::unique_ptr<cmCompiledGeneratorExpression> outputFileExpr,
std::unique_ptr<cmCompiledGeneratorExpression> condition,
bool inputIsContent, cmPolicies::PolicyStatus policyStatusCMP0070)
: Input(input)
, OutputFileExpr(std::move(outputFileExpr))
, Condition(std::move(condition))
, InputIsContent(inputIsContent)
, PolicyStatusCMP0070(policyStatusCMP0070)
{
}
void cmGeneratorExpressionEvaluationFile::Generate(
cmLocalGenerator* lg, const std::string& config, const std::string& lang,
cmCompiledGeneratorExpression* inputExpression,
std::map<std::string, std::string>& outputFiles, mode_t perm)
{
std::string rawCondition = this->Condition->GetInput();
if (!rawCondition.empty()) {
std::string condResult = this->Condition->Evaluate(
lg, config, false, nullptr, nullptr, nullptr, lang);
if (condResult == "0") {
return;
}
if (condResult != "1") {
std::ostringstream e;
e << "Evaluation file condition \"" << rawCondition
<< "\" did "
"not evaluate to valid content. Got \""
<< condResult << "\".";
lg->IssueMessage(cmake::FATAL_ERROR, e.str());
return;
}
}
std::string outputFileName = this->OutputFileExpr->Evaluate(
lg, config, false, nullptr, nullptr, nullptr, lang);
const std::string outputContent = inputExpression->Evaluate(
lg, config, false, nullptr, nullptr, nullptr, lang);
if (cmSystemTools::FileIsFullPath(outputFileName)) {
outputFileName = cmSystemTools::CollapseFullPath(outputFileName);
} else {
outputFileName = this->FixRelativePath(outputFileName, PathForOutput, lg);
}
std::map<std::string, std::string>::iterator it =
outputFiles.find(outputFileName);
if (it != outputFiles.end()) {
if (it->second == outputContent) {
return;
}
std::ostringstream e;
e << "Evaluation file to be written multiple times with different "
"content. "
"This is generally caused by the content evaluating the "
"configuration type, language, or location of object files:\n "
<< outputFileName;
lg->IssueMessage(cmake::FATAL_ERROR, e.str());
return;
}
lg->GetMakefile()->AddCMakeOutputFile(outputFileName);
this->Files.push_back(outputFileName);
outputFiles[outputFileName] = outputContent;
cmGeneratedFileStream fout(outputFileName.c_str());
fout.SetCopyIfDifferent(true);
fout << outputContent;
if (fout.Close() && perm) {
cmSystemTools::SetPermissions(outputFileName.c_str(), perm);
}
}
void cmGeneratorExpressionEvaluationFile::CreateOutputFile(
cmLocalGenerator* lg, std::string const& config)
{
std::vector<std::string> enabledLanguages;
cmGlobalGenerator* gg = lg->GetGlobalGenerator();
gg->GetEnabledLanguages(enabledLanguages);
for (std::string const& le : enabledLanguages) {
std::string name = this->OutputFileExpr->Evaluate(
lg, config, false, nullptr, nullptr, nullptr, le);
cmSourceFile* sf = lg->GetMakefile()->GetOrCreateSource(
name, false, cmSourceFileLocationKind::Known);
// Tell TraceDependencies that the file is not expected to exist
// on disk yet. We generate it after that runs.
sf->SetProperty("GENERATED", "1");
// Tell the build system generators that there is no build rule
// to generate the file.
sf->SetProperty("__CMAKE_GENERATED_BY_CMAKE", "1");
gg->SetFilenameTargetDepends(
sf, this->OutputFileExpr->GetSourceSensitiveTargets());
}
}
void cmGeneratorExpressionEvaluationFile::Generate(cmLocalGenerator* lg)
{
mode_t perm = 0;
std::string inputContent;
if (this->InputIsContent) {
inputContent = this->Input;
} else {
std::string inputFileName = this->Input;
if (cmSystemTools::FileIsFullPath(inputFileName)) {
inputFileName = cmSystemTools::CollapseFullPath(inputFileName);
} else {
inputFileName = this->FixRelativePath(inputFileName, PathForInput, lg);
}
lg->GetMakefile()->AddCMakeDependFile(inputFileName);
cmSystemTools::GetPermissions(inputFileName.c_str(), perm);
cmsys::ifstream fin(inputFileName.c_str());
if (!fin) {
std::ostringstream e;
e << "Evaluation file \"" << inputFileName << "\" cannot be read.";
lg->IssueMessage(cmake::FATAL_ERROR, e.str());
return;
}
std::string line;
std::string sep;
while (cmSystemTools::GetLineFromStream(fin, line)) {
inputContent += sep + line;
sep = "\n";
}
inputContent += sep;
}
cmListFileBacktrace lfbt = this->OutputFileExpr->GetBacktrace();
cmGeneratorExpression contentGE(lfbt);
std::unique_ptr<cmCompiledGeneratorExpression> inputExpression =
contentGE.Parse(inputContent);
std::map<std::string, std::string> outputFiles;
std::vector<std::string> allConfigs;
lg->GetMakefile()->GetConfigurations(allConfigs);
if (allConfigs.empty()) {
allConfigs.emplace_back();
}
std::vector<std::string> enabledLanguages;
cmGlobalGenerator* gg = lg->GetGlobalGenerator();
gg->GetEnabledLanguages(enabledLanguages);
for (std::string const& le : enabledLanguages) {
for (std::string const& li : allConfigs) {
this->Generate(lg, li, le, inputExpression.get(), outputFiles, perm);
if (cmSystemTools::GetFatalErrorOccured()) {
return;
}
}
}
}
std::string cmGeneratorExpressionEvaluationFile::FixRelativePath(
std::string const& relativePath, PathRole role, cmLocalGenerator* lg)
{
std::string resultPath;
switch (this->PolicyStatusCMP0070) {
case cmPolicies::WARN: {
std::string arg;
switch (role) {
case PathForInput:
arg = "INPUT";
break;
case PathForOutput:
arg = "OUTPUT";
break;
}
std::ostringstream w;
/* clang-format off */
w <<
cmPolicies::GetPolicyWarning(cmPolicies::CMP0070) << "\n"
"file(GENERATE) given relative " << arg << " path:\n"
" " << relativePath << "\n"
"This is not defined behavior unless CMP0070 is set to NEW. "
"For compatibility with older versions of CMake, the previous "
"undefined behavior will be used."
;
/* clang-format on */
lg->IssueMessage(cmake::AUTHOR_WARNING, w.str());
}
CM_FALLTHROUGH;
case cmPolicies::OLD:
// OLD behavior is to use the relative path unchanged,
// which ends up being used relative to the working dir.
resultPath = relativePath;
break;
case cmPolicies::REQUIRED_IF_USED:
case cmPolicies::REQUIRED_ALWAYS:
case cmPolicies::NEW:
// NEW behavior is to interpret the relative path with respect
// to the current source or binary directory.
switch (role) {
case PathForInput:
resultPath = cmSystemTools::CollapseFullPath(
relativePath, lg->GetCurrentSourceDirectory());
break;
case PathForOutput:
resultPath = cmSystemTools::CollapseFullPath(
relativePath, lg->GetCurrentBinaryDirectory());
break;
}
break;
}
return resultPath;
}
|
