Use C++11 override instead of CM_OVERRIDE

We now require C++11 support including `override`.  Drop use of
the old compatibility macro.  Convert references as follows:

    git grep -l CM_OVERRIDE -- '*.h' '*.hxx' '*.cxx' |
      xargs sed -i 's/CM_OVERRIDE/override/g'

Source/CPack/IFW/cmCPackIFWGenerator.h

@@ -47,7 +47,7 @@ public:
   /**
    * Destruct IFW generator
    */
-  ~cmCPackIFWGenerator() CM_OVERRIDE;
+  ~cmCPackIFWGenerator() override;
 
 protected:
   // cmCPackGenerator reimplementation
@@ -56,18 +56,18 @@ protected:
    * @brief Initialize generator
    * @return 0 on failure
    */
-  int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetPackagingInstallPrefix() CM_OVERRIDE;
+  int InitializeInternal() override;
+  int PackageFiles() override;
+  const char* GetPackagingInstallPrefix() override;
 
   /**
    * @brief Target binary extension
    * @return Executable suffix or disk image format
    */
-  const char* GetOutputExtension() CM_OVERRIDE;
+  const char* GetOutputExtension() override;
 
   std::string GetComponentInstallDirNameSuffix(
-    const std::string& componentName) CM_OVERRIDE;
+    const std::string& componentName) override;
 
   /**
    * @brief Get Component
@@ -79,7 +79,7 @@ protected:
    * @return Pointer to component
    */
   cmCPackComponent* GetComponent(const std::string& projectName,
-                                 const std::string& componentName) CM_OVERRIDE;
+                                 const std::string& componentName) override;
 
   /**
    * @brief Get group of component
@@ -91,12 +91,12 @@ protected:
    * @return Pointer to component group
    */
   cmCPackComponentGroup* GetComponentGroup(
-    const std::string& projectName, const std::string& groupName) CM_OVERRIDE;
+    const std::string& projectName, const std::string& groupName) override;
 
-  enum cmCPackGenerator::CPackSetDestdirSupport SupportsSetDestdir() const
-    CM_OVERRIDE;
-  bool SupportsAbsoluteDestination() const CM_OVERRIDE;
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  enum cmCPackGenerator::CPackSetDestdirSupport SupportsSetDestdir()
+    const override;
+  bool SupportsAbsoluteDestination() const override;
+  bool SupportsComponentInstallation() const override;
 
 protected:
   // Methods

Source/CPack/IFW/cmCPackIFWInstaller.cxx

@@ -262,7 +262,7 @@ public:
   std::string path, basePath;
 
 protected:
-  void StartElement(const std::string& name, const char** /*atts*/) CM_OVERRIDE
+  void StartElement(const std::string& name, const char** /*atts*/) override
   {
     this->file = name == "file";
     if (file) {
@@ -270,7 +270,7 @@ protected:
     }
   }
 
-  void CharacterDataHandler(const char* data, int length) CM_OVERRIDE
+  void CharacterDataHandler(const char* data, int length) override
   {
     if (this->file) {
       std::string content(data, data + length);
@@ -284,7 +284,7 @@ protected:
     }
   }
 
-  void EndElement(const std::string& /*name*/) CM_OVERRIDE {}
+  void EndElement(const std::string& /*name*/) override {}
 };
 
 void cmCPackIFWInstaller::GenerateInstallerFile()

Source/CPack/IFW/cmCPackIFWRepository.cxx

@@ -128,7 +128,7 @@ public:
   bool patched;
 
 protected:
-  void StartElement(const std::string& name, const char** atts) CM_OVERRIDE
+  void StartElement(const std::string& name, const char** atts) override
   {
     this->xout.StartElement(name);
     this->StartFragment(atts);
@@ -143,7 +143,7 @@ protected:
     }
   }
 
-  void EndElement(const std::string& name) CM_OVERRIDE
+  void EndElement(const std::string& name) override
   {
     if (name == "Updates" && !this->patched) {
       this->repository->WriteRepositoryUpdates(this->xout);
@@ -159,7 +159,7 @@ protected:
     }
   }
 
-  void CharacterDataHandler(const char* data, int length) CM_OVERRIDE
+  void CharacterDataHandler(const char* data, int length) override
   {
     std::string content(data, data + length);
     if (content == "" || content == " " || content == "  " ||

Source/CPack/cmCPack7zGenerator.h

@@ -20,10 +20,10 @@ public:
    * Construct generator
    */
   cmCPack7zGenerator();
-  ~cmCPack7zGenerator() CM_OVERRIDE;
+  ~cmCPack7zGenerator() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".7z"; }
+  const char* GetOutputExtension() override { return ".7z"; }
 };
 
 #endif

Source/CPack/cmCPackArchiveGenerator.h

@@ -28,11 +28,11 @@ public:
    * Construct generator
    */
   cmCPackArchiveGenerator(cmArchiveWrite::Compress, std::string const& format);
-  ~cmCPackArchiveGenerator() CM_OVERRIDE;
+  ~cmCPackArchiveGenerator() override;
   // Used to add a header to the archive
   virtual int GenerateHeader(std::ostream* os);
   // component support
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  bool SupportsComponentInstallation() const override;
 
 private:
   // get archive component filename
@@ -40,7 +40,7 @@ private:
                                           bool isGroupName);
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
+  int InitializeInternal() override;
   /**
    * Add the files belonging to the specified component
    * to the provided (already opened) archive.
@@ -56,7 +56,7 @@ protected:
    * method will call either PackageComponents or
    * PackageComponentsAllInOne.
    */
-  int PackageFiles() CM_OVERRIDE;
+  int PackageFiles() override;
   /**
    * The method used to package files when component
    * install is used. This will create one
@@ -68,7 +68,7 @@ protected:
    * components will be put in a single installer.
    */
   int PackageComponentsAllInOne();
-  const char* GetOutputExtension() CM_OVERRIDE = 0;
+  const char* GetOutputExtension() override = 0;
   cmArchiveWrite::Compress Compress;
   std::string ArchiveFormat;
 };

Source/CPack/cmCPackBundleGenerator.h

@@ -21,15 +21,15 @@ public:
   cmCPackTypeMacro(cmCPackBundleGenerator, cmCPackDragNDropGenerator);
 
   cmCPackBundleGenerator();
-  ~cmCPackBundleGenerator() CM_OVERRIDE;
+  ~cmCPackBundleGenerator() override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  const char* GetPackagingInstallPrefix() CM_OVERRIDE;
+  int InitializeInternal() override;
+  const char* GetPackagingInstallPrefix() override;
   int ConstructBundle();
   int SignBundle(const std::string& src_dir);
-  int PackageFiles() CM_OVERRIDE;
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  int PackageFiles() override;
+  bool SupportsComponentInstallation() const override;
 
   std::string InstallPrefix;
 };

Source/CPack/cmCPackCygwinBinaryGenerator.h

@@ -17,7 +17,7 @@ public:
    * Construct generator
    */
   cmCPackCygwinBinaryGenerator();
-  ~cmCPackCygwinBinaryGenerator() CM_OVERRIDE;
+  ~cmCPackCygwinBinaryGenerator() override;
 
 protected:
   virtual int InitializeInternal();

Source/CPack/cmCPackCygwinSourceGenerator.h

@@ -17,7 +17,7 @@ public:
    * Construct generator
    */
   cmCPackCygwinSourceGenerator();
-  ~cmCPackCygwinSourceGenerator() CM_OVERRIDE;
+  ~cmCPackCygwinSourceGenerator() override;
 
 protected:
   const char* GetPackagingInstallPrefix();

Source/CPack/cmCPackDebGenerator.h

@@ -23,7 +23,7 @@ public:
    * Construct generator
    */
   cmCPackDebGenerator();
-  ~cmCPackDebGenerator() CM_OVERRIDE;
+  ~cmCPackDebGenerator() override;
 
   static bool CanGenerate()
   {
@@ -40,7 +40,7 @@ public:
   }
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
+  int InitializeInternal() override;
   /**
    * This method factors out the work done in component packaging case.
    */
@@ -57,11 +57,11 @@ protected:
    * components will be put in a single installer.
    */
   int PackageComponentsAllInOne(const std::string& compInstDirName);
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".deb"; }
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  int PackageFiles() override;
+  const char* GetOutputExtension() override { return ".deb"; }
+  bool SupportsComponentInstallation() const override;
   std::string GetComponentInstallDirNameSuffix(
-    const std::string& componentName) CM_OVERRIDE;
+    const std::string& componentName) override;
 
 private:
   int createDeb();

Source/CPack/cmCPackDragNDropGenerator.h

@@ -23,20 +23,20 @@ public:
   cmCPackTypeMacro(cmCPackDragNDropGenerator, cmCPackGenerator);
 
   cmCPackDragNDropGenerator();
-  ~cmCPackDragNDropGenerator() CM_OVERRIDE;
+  ~cmCPackDragNDropGenerator() override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  int InitializeInternal() override;
+  const char* GetOutputExtension() override;
+  int PackageFiles() override;
+  bool SupportsComponentInstallation() const override;
 
   bool CopyFile(std::ostringstream& source, std::ostringstream& target);
   bool CreateEmptyFile(std::ostringstream& target, size_t size);
   bool RunCommand(std::ostringstream& command, std::string* output = 0);
 
   std::string GetComponentInstallDirNameSuffix(
-    const std::string& componentName) CM_OVERRIDE;
+    const std::string& componentName) override;
 
   int CreateDMG(const std::string& src_dir, const std::string& output_file);
 

Source/CPack/cmCPackFreeBSDGenerator.cxx

@@ -122,7 +122,7 @@ public:
   {
   }
 
-  void write_value(cmGeneratedFileStream& s) const CM_OVERRIDE
+  void write_value(cmGeneratedFileStream& s) const override
   {
     s << EscapeQuotes(value);
   }
@@ -154,7 +154,7 @@ public:
     return *this;
   }
 
-  void write_value(cmGeneratedFileStream& s) const CM_OVERRIDE
+  void write_value(cmGeneratedFileStream& s) const override
   {
     bool with_comma = false;
 
@@ -179,7 +179,7 @@ public:
   {
   }
 
-  void write_value(cmGeneratedFileStream& s) const CM_OVERRIDE
+  void write_value(cmGeneratedFileStream& s) const override
   {
     s << "{\n";
     for (VList::const_iterator it = value.begin(); it != value.end(); ++it) {

Source/CPack/cmCPackFreeBSDGenerator.h

@@ -22,13 +22,13 @@ public:
    * Construct generator
    */
   cmCPackFreeBSDGenerator();
-  ~cmCPackFreeBSDGenerator() CM_OVERRIDE;
+  ~cmCPackFreeBSDGenerator() override;
 
-  int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
+  int InitializeInternal() override;
+  int PackageFiles() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".txz"; }
+  const char* GetOutputExtension() override { return ".txz"; }
 
   std::string var_lookup(const char* var_name);
   void write_manifest_fields(cmGeneratedFileStream&);

Source/CPack/cmCPackGenerator.h

@@ -299,7 +299,7 @@ private:
 
 #define cmCPackTypeMacro(klass, superclass)                                   \
   typedef superclass Superclass;                                              \
-  const char* GetNameOfClass() CM_OVERRIDE { return #klass; }                 \
+  const char* GetNameOfClass() override { return #klass; }                    \
   static cmCPackGenerator* CreateGenerator() { return new klass; }            \
   class cmCPackTypeMacro_UseTrailingSemicolon
 

Source/CPack/cmCPackNSISGenerator.h

@@ -34,22 +34,22 @@ public:
    * Construct generator
    */
   cmCPackNSISGenerator(bool nsis64 = false);
-  ~cmCPackNSISGenerator() CM_OVERRIDE;
+  ~cmCPackNSISGenerator() override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
+  int InitializeInternal() override;
   void CreateMenuLinks(std::ostream& str, std::ostream& deleteStr);
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".exe"; }
-  const char* GetOutputPostfix() CM_OVERRIDE { return "win32"; }
+  int PackageFiles() override;
+  const char* GetOutputExtension() override { return ".exe"; }
+  const char* GetOutputPostfix() override { return "win32"; }
 
   bool GetListOfSubdirectories(const char* dir,
                                std::vector<std::string>& dirs);
 
-  enum cmCPackGenerator::CPackSetDestdirSupport SupportsSetDestdir() const
-    CM_OVERRIDE;
-  bool SupportsAbsoluteDestination() const CM_OVERRIDE;
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  enum cmCPackGenerator::CPackSetDestdirSupport SupportsSetDestdir()
+    const override;
+  bool SupportsAbsoluteDestination() const override;
+  bool SupportsComponentInstallation() const override;
 
   /// Produce a string that contains the NSIS code to describe a
   /// particular component. Any added macros will be emitted via

Source/CPack/cmCPackOSXX11Generator.h

@@ -23,13 +23,13 @@ public:
    * Construct generator
    */
   cmCPackOSXX11Generator();
-  ~cmCPackOSXX11Generator() CM_OVERRIDE;
+  ~cmCPackOSXX11Generator() override;
 
 protected:
-  virtual int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetPackagingInstallPrefix() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".dmg"; }
+  virtual int InitializeInternal() override;
+  int PackageFiles() override;
+  const char* GetPackagingInstallPrefix() override;
+  const char* GetOutputExtension() override { return ".dmg"; }
 
   // bool CopyCreateResourceFile(const std::string& name,
   //                            const std::string& dir);

Source/CPack/cmCPackPKGGenerator.h

@@ -27,13 +27,13 @@ public:
    * Construct generator
    */
   cmCPackPKGGenerator();
-  ~cmCPackPKGGenerator() CM_OVERRIDE;
+  ~cmCPackPKGGenerator() override;
 
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  bool SupportsComponentInstallation() const override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  const char* GetOutputPostfix() CM_OVERRIDE { return "darwin"; }
+  int InitializeInternal() override;
+  const char* GetOutputPostfix() override { return "darwin"; }
 
   // Copies or creates the resource file with the given name to the
   // package or package staging directory dirName. The variable

Source/CPack/cmCPackPackageMakerGenerator.h

@@ -25,13 +25,13 @@ public:
    * Construct generator
    */
   cmCPackPackageMakerGenerator();
-  ~cmCPackPackageMakerGenerator() CM_OVERRIDE;
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  ~cmCPackPackageMakerGenerator() override;
+  bool SupportsComponentInstallation() const override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".dmg"; }
+  int InitializeInternal() override;
+  int PackageFiles() override;
+  const char* GetOutputExtension() override { return ".dmg"; }
 
   // Run PackageMaker with the given command line, which will (if
   // successful) produce the given package file. Returns true if

Source/CPack/cmCPackProductBuildGenerator.h

@@ -25,12 +25,12 @@ public:
    * Construct generator
    */
   cmCPackProductBuildGenerator();
-  ~cmCPackProductBuildGenerator() CM_OVERRIDE;
+  ~cmCPackProductBuildGenerator() override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".pkg"; }
+  int InitializeInternal() override;
+  int PackageFiles() override;
+  const char* GetOutputExtension() override { return ".pkg"; }
 
   // Run ProductBuild with the given command line, which will (if
   // successful) produce the given package file. Returns true if

Source/CPack/cmCPackRPMGenerator.h

@@ -26,7 +26,7 @@ public:
    * Construct generator
    */
   cmCPackRPMGenerator();
-  ~cmCPackRPMGenerator() CM_OVERRIDE;
+  ~cmCPackRPMGenerator() override;
 
   static bool CanGenerate()
   {
@@ -43,8 +43,8 @@ public:
   }
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
+  int InitializeInternal() override;
+  int PackageFiles() override;
   /**
    * This method factors out the work done in component packaging case.
    */
@@ -61,10 +61,10 @@ protected:
    * components will be put in a single installer.
    */
   int PackageComponentsAllInOne(const std::string& compInstDirName);
-  const char* GetOutputExtension() CM_OVERRIDE { return ".rpm"; }
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  const char* GetOutputExtension() override { return ".rpm"; }
+  bool SupportsComponentInstallation() const override;
   std::string GetComponentInstallDirNameSuffix(
-    const std::string& componentName) CM_OVERRIDE;
+    const std::string& componentName) override;
 
   void AddGeneratedPackageNames();
 };

Source/CPack/cmCPackSTGZGenerator.h

@@ -23,13 +23,13 @@ public:
    * Construct generator
    */
   cmCPackSTGZGenerator();
-  ~cmCPackSTGZGenerator() CM_OVERRIDE;
+  ~cmCPackSTGZGenerator() override;
 
 protected:
-  int PackageFiles() CM_OVERRIDE;
-  int InitializeInternal() CM_OVERRIDE;
-  int GenerateHeader(std::ostream* os) CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".sh"; }
+  int PackageFiles() override;
+  int InitializeInternal() override;
+  int GenerateHeader(std::ostream* os) override;
+  const char* GetOutputExtension() override { return ".sh"; }
 };
 
 #endif

Source/CPack/cmCPackTGZGenerator.h

@@ -20,10 +20,10 @@ public:
    * Construct generator
    */
   cmCPackTGZGenerator();
-  ~cmCPackTGZGenerator() CM_OVERRIDE;
+  ~cmCPackTGZGenerator() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".tar.gz"; }
+  const char* GetOutputExtension() override { return ".tar.gz"; }
 };
 
 #endif

Source/CPack/cmCPackTXZGenerator.h

@@ -20,10 +20,10 @@ public:
    * Construct generator
    */
   cmCPackTXZGenerator();
-  ~cmCPackTXZGenerator() CM_OVERRIDE;
+  ~cmCPackTXZGenerator() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".tar.xz"; }
+  const char* GetOutputExtension() override { return ".tar.xz"; }
 };
 
 #endif

Source/CPack/cmCPackTarBZip2Generator.h

@@ -19,10 +19,10 @@ public:
    * Construct generator
    */
   cmCPackTarBZip2Generator();
-  ~cmCPackTarBZip2Generator() CM_OVERRIDE;
+  ~cmCPackTarBZip2Generator() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".tar.bz2"; }
+  const char* GetOutputExtension() override { return ".tar.bz2"; }
 };
 
 #endif

Source/CPack/cmCPackTarCompressGenerator.h

@@ -19,10 +19,10 @@ public: