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diff --git a/Source/CTest/cmCTestLaunch.h b/Source/CTest/cmCTestLaunch.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 cmCTestLaunch_h
+#define cmCTestLaunch_h
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include "cmsys/RegularExpression.hxx"
+#include <set>
+#include <string>
+#include <vector>
+
+class cmXMLWriter;
+
+/** \class cmCTestLaunch
+ * \brief Launcher for make rules to report results for ctest
+ *
+ * This implements the 'ctest --launch' tool.
+ */
+class cmCTestLaunch
+{
+public:
+  /** Entry point from ctest executable main().  */
+  static int Main(int argc, const char* const argv[]);
+
+private:
+  // Initialize the launcher from its command line.
+  cmCTestLaunch(int argc, const char* const* argv);
+  ~cmCTestLaunch();
+
+  // Run the real command.
+  int Run();
+  void RunChild();
+
+  // Methods to check the result of the real command.
+  bool IsError() const;
+  bool CheckResults();
+
+  // Launcher options specified before the real command.
+  std::string OptionOutput;
+  std::string OptionSource;
+  std::string OptionLanguage;
+  std::string OptionTargetName;
+  std::string OptionTargetType;
+  std::string OptionBuildDir;
+  std::string OptionFilterPrefix;
+  bool ParseArguments(int argc, const char* const* argv);
+
+  // The real command line appearing after launcher arguments.
+  int RealArgC;
+  const char* const* RealArgV;
+  std::string CWD;
+
+  // The real command line after response file expansion.
+  std::vector<std::string> RealArgs;
+  void HandleRealArg(const char* arg);
+
+  // A hash of the real command line is unique and unlikely to collide.
+  std::string LogHash;
+  void ComputeFileNames();
+
+  bool Passthru;
+  struct cmsysProcess_s* Process;
+  int ExitCode;
+
+  // Temporary log files for stdout and stderr of real command.
+  std::string LogDir;
+  std::string LogOut;
+  std::string LogErr;
+  bool HaveOut;
+  bool HaveErr;
+
+  // Labels associated with the build rule.
+  std::set<std::string> Labels;
+  void LoadLabels();
+  bool SourceMatches(std::string const& lhs, std::string const& rhs);
+
+  // Regular expressions to match warnings and their exceptions.
+  bool ScrapeRulesLoaded;
+  std::vector<cmsys::RegularExpression> RegexWarning;
+  std::vector<cmsys::RegularExpression> RegexWarningSuppress;
+  void LoadScrapeRules();
+  void LoadScrapeRules(const char* purpose,
+                       std::vector<cmsys::RegularExpression>& regexps);
+  bool ScrapeLog(std::string const& fname);
+  bool Match(std::string const& line,
+             std::vector<cmsys::RegularExpression>& regexps);
+  bool MatchesFilterPrefix(std::string const& line) const;
+
+  // Methods to generate the xml fragment.
+  void WriteXML();
+  void WriteXMLAction(cmXMLWriter& xml);
+  void WriteXMLCommand(cmXMLWriter& xml);
+  void WriteXMLResult(cmXMLWriter& xml);
+  void WriteXMLLabels(cmXMLWriter& xml);
+  void DumpFileToXML(cmXMLWriter& xml, std::string const& fname);
+
+  // Configuration
+  void LoadConfig();
+  std::string SourceDir;
+};
+
+#endif