2 files changed, 16 insertions, 3 deletions
diff --git a/Source/cmLoadCommandCommand.cxx b/Source/cmLoadCommandCommand.cxx
index 60edd56..fcdc045 100644
--- a/Source/cmLoadCommandCommand.cxx
+++ b/Source/cmLoadCommandCommand.cxx
@@ -226,7 +226,13 @@ bool cmLoadCommandCommand::InitialPass(std::vector<std::string> const& args)
     {
     return true;
     }
-  
+
+  // Construct a variable to report what file was loaded, if any.
+  // Start by removing the definition in case of failure.
+  std::string reportVar = "CMAKE_LOADED_COMMAND_";
+  reportVar += args[0];
+  m_Makefile->RemoveDefinition(reportVar.c_str());
+
   // the file must exist
   std::string fullPath = cmDynamicLoader::LibPrefix();
   fullPath += "cm" + args[0] + cmDynamicLoader::LibExtension();
@@ -269,7 +275,10 @@ bool cmLoadCommandCommand::InitialPass(std::vector<std::string> const& args)
     this->SetError(err.c_str());
     return false;
     }
-  
+
+  // Report what file was loaded for this command.
+  m_Makefile->AddDefinition(reportVar.c_str(), fullPath.c_str());
+
   // find the init function
   std::string initFuncName = args[0] + "Init";
   CM_INIT_FUNCTION initFunction
diff --git a/Source/cmLoadCommandCommand.h b/Source/cmLoadCommandCommand.h
index 8737da2..aae0342 100644
--- a/Source/cmLoadCommandCommand.h
+++ b/Source/cmLoadCommandCommand.h
@@ -70,7 +70,11 @@ public:
       "The given locations are searched for a library whose name is "
       "cmCOMMAND_NAME.  If found, it is loaded as a module and the command "
       "is added to the set of available CMake commands.  Usually, TRY_COMPILE "
-      "is used before this command to compile the module.";
+      "is used before this command to compile the module.  If the command "
+      "is successfully loaded a variable named\n"
+      "  CMAKE_LOADED_COMMAND_<COMMAND_NAME>\n"
+      "will be set to the full path of the module that was loaded.  "
+      "Otherwise the variable will not be set.";
     }
   
   cmTypeMacro(cmLoadCommandCommand, cmCommand);