ENH: LOAD_COMMAND command will now set a variable called CMAKE_LOADED_COMMAND_<COMMAND_NAME> to the full path of the loaded module if loading was successful. Otherwise the variable is not set (will evaluate to empty string). This is useful both in testing whether loading worked and for installing loaded command modules.

1 files changed, 11 insertions, 2 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