cli tar: support for raw compression

Help/manual/cmake.1.rst

@@ -1488,8 +1488,21 @@ Available commands are:
     .. versionadded:: 3.3
 
     Specify the format of the archive to be created.
-    Supported formats are: ``7zip``, ``gnutar``, ``pax``,
-    ``paxr`` (restricted pax, default), and ``zip``.
+    Supported formats are:
+
+    * ``7zip``
+    * ``gnutar``
+    * ``pax``
+    * ``paxr`` (restricted pax, default)
+    * ``raw``
+
+      .. versionadded:: 4.3
+
+      If this format is used, only one file will be compressed
+      with the compression type specified by the
+      :option:`--cmake-tar-compression-method <cmake-E_tar --cmake-tar-compression-method>`.
+
+    * ``zip``
 
     If the compression method is not specified, the compression method
     depends on the format:

Help/release/dev/cli-tar-compression-method.rst

@@ -3,3 +3,4 @@ cli-tar-compression-method
 
 * The :manual:`cmake(1)` ``-E tar`` tool supports specifying compression method
   via ``--cmake-tar-compression-method`` option
+* The :manual:`cmake(1)` ``-E tar`` tool supports packing raw files via ``--format=raw``. This is useful for compressing tar files without any compression

Source/cmcmd.cxx

@@ -1576,7 +1576,8 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string> const& args,
 
     // Tar files
     if (args[1] == "tar" && args.size() > 3) {
-      char const* knownFormats[] = { "7zip", "gnutar", "pax", "paxr", "zip" };
+      char const* knownFormats[] = { "7zip", "gnutar", "pax",
+                                     "paxr", "raw",    "zip" };
 
       std::string const& flags = args[2];
       std::string const& outFile = args[3];