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diff --git a/Source/cmNinjaTargetGenerator.h b/Source/cmNinjaTargetGenerator.h
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+++ b/Source/cmNinjaTargetGenerator.h
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+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cmNinjaTargetGenerator_h
+#define cmNinjaTargetGenerator_h
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include "cmCommonTargetGenerator.h"
+#include "cmGlobalNinjaGenerator.h"
+#include "cmNinjaTypes.h"
+#include "cmOSXBundleGenerator.h"
+
+#include <set>
+#include <string>
+#include <vector>
+
+class cmCustomCommand;
+class cmGeneratedFileStream;
+class cmGeneratorTarget;
+class cmLocalNinjaGenerator;
+class cmMakefile;
+class cmSourceFile;
+
+class cmNinjaTargetGenerator : public cmCommonTargetGenerator
+{
+public:
+  /// Create a cmNinjaTargetGenerator according to the @a target's type.
+  static cmNinjaTargetGenerator* New(cmGeneratorTarget* target);
+
+  /// Build a NinjaTargetGenerator.
+  cmNinjaTargetGenerator(cmGeneratorTarget* target);
+
+  /// Destructor.
+  ~cmNinjaTargetGenerator() override;
+
+  virtual void Generate() = 0;
+
+  std::string GetTargetName() const;
+
+  bool NeedDepTypeMSVC(const std::string& lang) const;
+
+protected:
+  bool SetMsvcTargetPdbVariable(cmNinjaVars&) const;
+
+  cmGeneratedFileStream& GetBuildFileStream() const;
+  cmGeneratedFileStream& GetRulesFileStream() const;
+
+  cmGeneratorTarget* GetGeneratorTarget() const
+  {
+    return this->GeneratorTarget;
+  }
+
+  cmLocalNinjaGenerator* GetLocalGenerator() const
+  {
+    return this->LocalGenerator;
+  }
+
+  cmGlobalNinjaGenerator* GetGlobalGenerator() const;
+
+  cmMakefile* GetMakefile() const { return this->Makefile; }
+
+  std::string LanguageCompilerRule(const std::string& lang) const;
+  std::string LanguagePreprocessRule(std::string const& lang) const;
+  bool NeedExplicitPreprocessing(std::string const& lang) const;
+  std::string LanguageDyndepRule(std::string const& lang) const;
+  bool NeedDyndep(std::string const& lang) const;
+
+  std::string OrderDependsTargetForTarget();
+
+  std::string ComputeOrderDependsForTarget();
+
+  /**
+   * Compute the flags for compilation of object files for a given @a language.
+   * @note Generally it is the value of the variable whose name is computed
+   *       by LanguageFlagsVarName().
+   */
+  std::string ComputeFlagsForObject(cmSourceFile const* source,
+                                    const std::string& language);
+
+  void AddIncludeFlags(std::string& flags, std::string const& lang) override;
+
+  std::string ComputeDefines(cmSourceFile const* source,
+                             const std::string& language);
+
+  std::string ComputeIncludes(cmSourceFile const* source,
+                              const std::string& language);
+
+  std::string ConvertToNinjaPath(const std::string& path) const
+  {
+    return this->GetGlobalGenerator()->ConvertToNinjaPath(path);
+  }
+  cmGlobalNinjaGenerator::MapToNinjaPathImpl MapToNinjaPath() const
+  {
+    return this->GetGlobalGenerator()->MapToNinjaPath();
+  }
+
+  /// @return the list of link dependency for the given target @a target.
+  cmNinjaDeps ComputeLinkDeps(const std::string& linkLanguage) const;
+
+  /// @return the source file path for the given @a source.
+  std::string GetSourceFilePath(cmSourceFile const* source) const;
+
+  /// @return the object file path for the given @a source.
+  std::string GetObjectFilePath(cmSourceFile const* source) const;
+
+  /// @return the preprocessed source file path for the given @a source.
+  std::string GetPreprocessedFilePath(cmSourceFile const* source) const;
+
+  /// @return the dyndep file path for this target.
+  std::string GetDyndepFilePath(std::string const& lang) const;
+
+  /// @return the target dependency scanner info file path
+  std::string GetTargetDependInfoPath(std::string const& lang) const;
+
+  /// @return the file path where the target named @a name is generated.
+  std::string GetTargetFilePath(const std::string& name) const;
+
+  /// @return the output path for the target.
+  virtual std::string GetTargetOutputDir() const;
+
+  void WriteLanguageRules(const std::string& language);
+  void WriteCompileRule(const std::string& language);
+  void WriteObjectBuildStatements();
+  void WriteObjectBuildStatement(cmSourceFile const* source);
+  void WriteTargetDependInfo(std::string const& lang);
+
+  void ExportObjectCompileCommand(
+    std::string const& language, std::string const& sourceFileName,
+    std::string const& objectDir, std::string const& objectFileName,
+    std::string const& objectFileDir, std::string const& flags,
+    std::string const& defines, std::string const& includes);
+
+  cmNinjaDeps GetObjects() const { return this->Objects; }
+
+  void EnsureDirectoryExists(const std::string& dir) const;
+  void EnsureParentDirectoryExists(const std::string& path) const;
+
+  // write rules for macOS Application Bundle content.
+  struct MacOSXContentGeneratorType
+    : cmOSXBundleGenerator::MacOSXContentGeneratorType
+  {
+    MacOSXContentGeneratorType(cmNinjaTargetGenerator* g)
+      : Generator(g)
+    {
+    }
+
+    void operator()(cmSourceFile const& source, const char* pkgloc) override;
+
+  private:
+    cmNinjaTargetGenerator* Generator;
+  };
+  friend struct MacOSXContentGeneratorType;
+
+  MacOSXContentGeneratorType* MacOSXContentGenerator;
+  // Properly initialized by sub-classes.
+  cmOSXBundleGenerator* OSXBundleGenerator;
+  std::set<std::string> MacContentFolders;
+
+  void addPoolNinjaVariable(const std::string& pool_property,
+                            cmGeneratorTarget* target, cmNinjaVars& vars);
+
+  bool ForceResponseFile();
+
+private:
+  cmLocalNinjaGenerator* LocalGenerator;
+  /// List of object files for this target.
+  cmNinjaDeps Objects;
+  cmNinjaDeps DDIFiles; // TODO: Make per-language.
+  std::vector<cmCustomCommand const*> CustomCommands;
+  cmNinjaDeps ExtraFiles;
+};
+
+#endif // ! cmNinjaTargetGenerator_h