summaryrefslogtreecommitdiffstats
path: root/Source/cmGlobalNinjaGenerator.h
blob: 3d443d8ed887f58dd5abad22a7f0dc9a7f585fc5 (plain)
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
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
/*============================================================================
  CMake - Cross Platform Makefile Generator
  Copyright 2011 Peter Collingbourne <peter@pcc.me.uk>
  Copyright 2011 Nicolas Despres <nicolas.despres@gmail.com>

  Distributed under the OSI-approved BSD License (the "License");
  see accompanying file Copyright.txt for details.

  This software is distributed WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the License for more information.
============================================================================*/
#ifndef cmGlobalNinjaGenerator_h
#  define cmGlobalNinjaGenerator_h

#  include "cmGlobalGenerator.h"
#  include "cmGlobalGeneratorFactory.h"
#  include "cmNinjaTypes.h"

//#define NINJA_GEN_VERBOSE_FILES

class cmLocalGenerator;
class cmGeneratedFileStream;
class cmGeneratorTarget;

/**
 * \class cmGlobalNinjaGenerator
 * \brief Write a build.ninja file.
 *
 * The main differences between this generator and the UnixMakefile
 * generator family are:
 * - We don't care about VERBOSE variable or RULE_MESSAGES property since
 *   it is handle by Ninja's -v option.
 * - We don't care about computing any progress status since Ninja manages
 *   it itself.
 * - We don't care about generating a clean target since Ninja already have
 *   a clean tool.
 * - We generate one build.ninja and one rules.ninja per project.
 * - We try to minimize the number of generated rules: one per target and
 *   language.
 * - We use Ninja special variable $in and $out to produce nice output.
 * - We extensively use Ninja variable overloading system to minimize the
 *   number of generated rules.
 */
class cmGlobalNinjaGenerator : public cmGlobalGenerator
{
public:
  /// The default name of Ninja's build file. Typically: build.ninja.
  static const char* NINJA_BUILD_FILE;

  /// The default name of Ninja's rules file. Typically: rules.ninja.
  /// It is included in the main build.ninja file.
  static const char* NINJA_RULES_FILE;

  /// The indentation string used when generating Ninja's build file.
  static const char* INDENT;

  /// Write @a count times INDENT level to output stream @a os.
  static void Indent(std::ostream& os, int count);

  /// Write a divider in the given output stream @a os.
  static void WriteDivider(std::ostream& os);

  static std::string EncodeIdent(const std::string &ident, std::ostream &vars);
  static std::string EncodeLiteral(const std::string &lit);
  static std::string EncodePath(const std::string &path);
  static std::string EncodeDepfileSpace(const std::string &path);

  /**
   * Write the given @a comment to the output stream @a os. It
   * handles new line character properly.
   */
  static void WriteComment(std::ostream& os, const std::string& comment);

  /**
   * Write a build statement to @a os with the @a comment using
   * the @a rule the list of @a outputs files and inputs.
   * It also writes the variables bound to this build statement.
   * @warning no escaping of any kind is done here.
   */
  void WriteBuild(std::ostream& os,
                  const std::string& comment,
                  const std::string& rule,
                  const cmNinjaDeps& outputs,
                  const cmNinjaDeps& explicitDeps,
                  const cmNinjaDeps& implicitDeps,
                  const cmNinjaDeps& orderOnlyDeps,
                  const cmNinjaVars& variables,
                  const std::string& rspfile = std::string(),
                  int cmdLineLimit = -1);

  /**
   * Helper to write a build statement with the special 'phony' rule.
   */
  void WritePhonyBuild(std::ostream& os,
                       const std::string& comment,
                       const cmNinjaDeps& outputs,
                       const cmNinjaDeps& explicitDeps,
                       const cmNinjaDeps& implicitDeps = cmNinjaDeps(),
                       const cmNinjaDeps& orderOnlyDeps = cmNinjaDeps(),
                       const cmNinjaVars& variables = cmNinjaVars());

  void WriteCustomCommandBuild(const std::string& command,
                               const std::string& description,
                               const std::string& comment,
                               bool uses_terminal,
                               const cmNinjaDeps& outputs,
                               const cmNinjaDeps& deps = cmNinjaDeps(),
                               const cmNinjaDeps& orderOnly = cmNinjaDeps());
  void WriteMacOSXContentBuild(const std::string& input,
                               const std::string& output);

  /**
   * Write a rule statement named @a name to @a os with the @a comment,
   * the mandatory @a command, the @a depfile and the @a description.
   * It also writes the variables bound to this rule statement.
   * @warning no escaping of any kind is done here.
   */
  static void WriteRule(std::ostream& os,
                        const std::string& name,
                        const std::string& command,
                        const std::string& description,
                        const std::string& comment,
                        const std::string& depfile,
                        const std::string& deptype,
                        const std::string& rspfile,
                        const std::string& rspcontent,
                        const std::string& restat,
                        bool generator);

  /**
   * Write a variable named @a name to @a os with value @a value and an
   * optional @a comment. An @a indent level can be specified.
   * @warning no escaping of any kind is done here.
   */
  static void WriteVariable(std::ostream& os,
                            const std::string& name,
                            const std::string& value,
                            const std::string& comment = "",
                            int indent = 0);

  /**
   * Write an include statement including @a filename with an optional
   * @a comment to the @a os stream.
   */
  static void WriteInclude(std::ostream& os,
                           const std::string& filename,
                           const std::string& comment = "");

  /**
   * Write a default target statement specifying @a targets as
   * the default targets.
   */
  static void WriteDefault(std::ostream& os,
                           const cmNinjaDeps& targets,
                           const std::string& comment = "");


  static bool IsMinGW() { return UsingMinGW; }


public:
  /// Default constructor.
  cmGlobalNinjaGenerator();

  /// Convenience method for creating an instance of this class.
  static cmGlobalGeneratorFactory* NewFactory() {
    return new cmGlobalGeneratorSimpleFactory<cmGlobalNinjaGenerator>(); }

  /// Destructor.
  virtual ~cmGlobalNinjaGenerator() { }

  /// Overloaded methods. @see cmGlobalGenerator::CreateLocalGenerator()
  virtual cmLocalGenerator* CreateLocalGenerator();

  /// Overloaded methods. @see cmGlobalGenerator::GetName().
  virtual std::string GetName() const {
    return cmGlobalNinjaGenerator::GetActualName(); }

  /// @return the name of this generator.
  static std::string GetActualName() { return "Ninja"; }

  /// Overloaded methods. @see cmGlobalGenerator::GetDocumentation()
  static void GetDocumentation(cmDocumentationEntry& entry);

  /// Overloaded methods. @see cmGlobalGenerator::EnableLanguage()
  virtual void EnableLanguage(std::vector<std::string>const& languages,
                              cmMakefile* mf,
                              bool optional);

  /// Overloaded methods. @see cmGlobalGenerator::GenerateBuildCommand()
  virtual void GenerateBuildCommand(
    std::vector<std::string>& makeCommand,
    const std::string& makeProgram,
    const std::string& projectName,
    const std::string& projectDir,
    const std::string& targetName,
    const std::string& config,
    bool fast,
    std::vector<std::string> const& makeOptions = std::vector<std::string>()
    );

  // Setup target names
  virtual const char* GetAllTargetName()           const { return "all"; }
  virtual const char* GetInstallTargetName()       const { return "install"; }
  virtual const char* GetInstallLocalTargetName()  const {
    return "install/local";
  }
  virtual const char* GetInstallStripTargetName()  const {
    return "install/strip";
  }
  virtual const char* GetTestTargetName()          const { return "test"; }
  virtual const char* GetPackageTargetName()       const { return "package"; }
  virtual const char* GetPackageSourceTargetName() const {
    return "package_source";
  }
  virtual const char* GetEditCacheTargetName()     const {
    return "edit_cache";
  }
  virtual const char* GetRebuildCacheTargetName()  const {
    return "rebuild_cache";
  }
  virtual const char* GetCleanTargetName()         const { return "clean"; }


  cmGeneratedFileStream* GetBuildFileStream() const {
    return this->BuildFileStream; }

  cmGeneratedFileStream* GetRulesFileStream() const {
    return this->RulesFileStream; }

  void AddCXXCompileCommand(const std::string &commandLine,
                            const std::string &sourceFile);

  /**
   * Add a rule to the generated build system.
   * Call WriteRule() behind the scene but perform some check before like:
   * - Do not add twice the same rule.
   */
  void AddRule(const std::string& name,
               const std::string& command,
               const std::string& description,
               const std::string& comment,
               const std::string& depfile,
               const std::string& deptype,
               const std::string& rspfile,
               const std::string& rspcontent,
               const std::string& restat,
               bool generator);

  bool HasRule(const std::string& name);

  void AddCustomCommandRule();
  void AddMacOSXContentRule();

  bool HasCustomCommandOutput(const std::string &output) {
    return this->CustomCommandOutputs.find(output) !=
           this->CustomCommandOutputs.end();
  }

  /// Called when we have seen the given custom command.  Returns true
  /// if we has seen it before.
  bool SeenCustomCommand(cmCustomCommand const *cc) {
    return !this->CustomCommands.insert(cc).second;
  }

  /// Called when we have seen the given custom command output.
  void SeenCustomCommandOutput(const std::string &output) {
    this->CustomCommandOutputs.insert(output);
    // We don't need the assumed dependencies anymore, because we have
    // an output.
    this->AssumedSourceDependencies.erase(output);
  }

  void AddAssumedSourceDependencies(const std::string &source,
                                    const cmNinjaDeps &deps) {
    std::set<std::string> &ASD = this->AssumedSourceDependencies[source];
    // Because we may see the same source file multiple times (same source
    // specified in multiple targets), compute the union of any assumed
    // dependencies.
    ASD.insert(deps.begin(), deps.end());
  }

  void AppendTargetOutputs(cmTarget const* target, cmNinjaDeps& outputs);
  void AppendTargetDepends(cmTarget const* target, cmNinjaDeps& outputs);
  void AddDependencyToAll(cmTarget* target);
  void AddDependencyToAll(const std::string& input);

  const std::vector<cmLocalGenerator*>& GetLocalGenerators() const {
    return LocalGenerators; }

  bool IsExcluded(cmLocalGenerator* root, cmTarget& target) {
    return cmGlobalGenerator::IsExcluded(root, target); }

  int GetRuleCmdLength(const std::string& name) {
    return RuleCmdLength[name]; }

  void AddTargetAlias(const std::string& alias, cmTarget* target);

  virtual void ComputeTargetObjectDirectory(cmGeneratorTarget* gt) const;

  std::string ninjaVersion() const;

  bool SupportsConsolePool() const;

protected:

  /// Overloaded methods. @see cmGlobalGenerator::Generate()
  virtual void Generate();

  /// Overloaded methods.
  /// @see cmGlobalGenerator::CheckALLOW_DUPLICATE_CUSTOM_TARGETS()
  virtual bool CheckALLOW_DUPLICATE_CUSTOM_TARGETS() const { return true; }


private:
  virtual std::string GetEditCacheCommand() const;


  void OpenBuildFileStream();
  void CloseBuildFileStream();

  void CloseCompileCommandsStream();

  void OpenRulesFileStream();
  void CloseRulesFileStream();

  /// Write the common disclaimer text at the top of each build file.
  void WriteDisclaimer(std::ostream& os);

  void WriteAssumedSourceDependencies();

  void WriteTargetAliases(std::ostream& os);
  void WriteUnknownExplicitDependencies(std::ostream& os);

  void WriteBuiltinTargets(std::ostream& os);
  void WriteTargetAll(std::ostream& os);
  void WriteTargetRebuildManifest(std::ostream& os);
  void WriteTargetClean(std::ostream& os);
  void WriteTargetHelp(std::ostream& os);

  std::string ninjaCmd() const;

  /// The file containing the build statement. (the relationship of the
  /// compilation DAG).
  cmGeneratedFileStream* BuildFileStream;
  /// The file containing the rule statements. (The action attached to each
  /// edge of the compilation DAG).
  cmGeneratedFileStream* RulesFileStream;
  cmGeneratedFileStream* CompileCommandsStream;

  /// The type used to store the set of rules added to the generated build
  /// system.
  typedef std::set<std::string> RulesSetType;

  /// The set of rules added to the generated build system.
  RulesSetType Rules;

  /// Length of rule command, used by rsp file evaluation
  std::map<std::string, int> RuleCmdLength;

  /// The set of dependencies to add to the "all" target.
  cmNinjaDeps AllDependencies;

  /// The set of custom commands we have seen.
  std::set<cmCustomCommand const*> CustomCommands;

  /// The set of custom command outputs we have seen.
  std::set<std::string> CustomCommandOutputs;

  /// The combined explicit dependencies of custom build commands
  std::set<std::string> CombinedCustomCommandExplicitDependencies;

  /// When combined with CombinedCustomCommandExplicitDependencies it allows
  /// us to detect the set of explicit dependencies that have
  std::set<std::string> CombinedBuildOutputs;

  /// The mapping from source file to assumed dependencies.
  std::map<std::string, std::set<std::string> > AssumedSourceDependencies;

  typedef std::map<std::string, cmTarget*> TargetAliasMap;
  TargetAliasMap TargetAliases;

  static cmLocalGenerator* LocalGenerator;

  static bool UsingMinGW;

};

#endif // ! cmGlobalNinjaGenerator_h