ENH: Allow blocking of writing into the source tree

1 files changed, 8 insertions, 0 deletions

diff --git a/Source/cmMakeDirectoryCommand.cxx b/Source/cmMakeDirectoryCommand.cxx
index b1a2821222..3696296a87 100644
--- a/Source/cmMakeDirectoryCommand.cxx
+++ b/Source/cmMakeDirectoryCommand.cxx
@@ -24,6 +24,14 @@ bool cmMakeDirectoryCommand::InitialPass(std::vector<std::string> const& args)
     this->SetError("called with incorrect number of arguments");
     return false;
     }
+    if ( !this->Makefile->CanIWriteThisFile(args[0].c_str()) )
+      {
+      std::string e = "attempted to create a directory: " + args[0]
+        + " into a source directory.";
+      this->SetError(e.c_str());
+      cmSystemTools::SetFatalErrorOccured();
+      return false;
+      }
   cmSystemTools::MakeDirectory(args[0].c_str());
   return true;
 }