1 files changed, 37 insertions, 12 deletions

diff --git a/Source/cmBuildCommand.h b/Source/cmBuildCommand.h
index 9d494e7..703ff88 100644
--- a/Source/cmBuildCommand.h
+++ b/Source/cmBuildCommand.h
@@ -38,35 +38,60 @@ public:
                            cmExecutionStatus &status);
 
   /**
+   * The primary command signature with optional, KEYWORD-based args.
+   */
+  virtual bool MainSignature(std::vector<std::string> const& args);
+
+  /**
+   * Legacy "exactly 2 args required" signature.
+   */
+  virtual bool TwoArgsSignature(std::vector<std::string> const& args);
+
+  /**
    * The name of the command as specified in CMakeList.txt.
    */
   virtual const char* GetName() {return "build_command";}
-  
+
   /**
    * Succinct documentation.
    */
   virtual const char* GetTerseDocumentation() 
     {
-    return "Get the command line that will build this project.";
+    return "Get the command line to build this project.";
     }
-  
+
   /**
    * More documentation.
    */
   virtual const char* GetFullDocumentation()
     {
     return
-      "  build_command(<variable> <makecommand>)\n"
-      "Sets the given <variable> to a string containing the command that "
-      "will build this project from the root of the build tree using the "
-      "build tool given by <makecommand>.  <makecommand> should be msdev, "
-      "nmake, make or one of the end user build tools.  "
-      "This is useful for configuring testing systems.";
+      "  build_command(<variable>\n"
+      "                [CONFIGURATION <config>]\n"
+      "                [PROJECT_NAME <projname>]\n"
+      "                [TARGET <target>])\n"
+      "Sets the given <variable> to a string containing the command line "
+      "for building one configuration of a target in a project using the "
+      "build tool appropriate for the current CMAKE_GENERATOR.\n"
+      "If CONFIGURATION is omitted, CMake chooses a reasonable default "
+      "value  for multi-configuration generators.  CONFIGURATION is "
+      "ignored for single-configuration generators.\n"
+      "If PROJECT_NAME is omitted, the resulting command line will build "
+      "the top level PROJECT in the current build tree.\n"
+      "If TARGET is omitted, the resulting command line will build "
+      "everything, effectively using build target 'all' or 'ALL_BUILD'.\n"
+      "  build_command(<cachevariable> <makecommand>)\n"
+      "This second signature is deprecated, but still available for "
+      "backwards compatibility. Use the first signature instead.\n"
+      "Sets the given <cachevariable> to a string containing the command "
+      "to build this project from the root of the build tree using "
+      "the build tool given by <makecommand>.  <makecommand> should be "
+      "the full path to msdev, devenv, nmake, make or one of the end "
+      "user build tools."
+      ;
     }
-  
+
   cmTypeMacro(cmBuildCommand, cmCommand);
 };
 
-
-
 #endif