From 3b743880503248235f319bd3e59e534ea26383f6 Mon Sep 17 00:00:00 2001
From: Bill Hoffman <bill.hoffman@kitware.com>
Date: Mon, 24 Jul 2006 11:27:07 -0400
Subject: [PATCH] ENH: allow for source tree to be in root directory

---
 Source/cmLocalVisualStudio7Generator.cxx |  1 +
 Source/kwsys/SystemTools.cxx             | 24 ++++++++++++++++++------
 2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/Source/cmLocalVisualStudio7Generator.cxx b/Source/cmLocalVisualStudio7Generator.cxx
index 4466e8d1b..8e5c59890 100644
--- a/Source/cmLocalVisualStudio7Generator.cxx
+++ b/Source/cmLocalVisualStudio7Generator.cxx
@@ -176,6 +176,7 @@ void cmLocalVisualStudio7Generator::AddVCProjBuildRule(cmTarget& tgt)
   std::string makefileIn = this->Makefile->GetStartDirectory();
   makefileIn += "/";
   makefileIn += "CMakeLists.txt";
+  makefileIn = cmSystemTools::CollapseFullPath(makefileIn.c_str());
   std::string comment = "Building Custom Rule ";
   comment += makefileIn;
   std::string args;
diff --git a/Source/kwsys/SystemTools.cxx b/Source/kwsys/SystemTools.cxx
index e4efe3980..172ce497f 100644
--- a/Source/kwsys/SystemTools.cxx
+++ b/Source/kwsys/SystemTools.cxx
@@ -1339,13 +1339,17 @@ void SystemTools::ConvertToUnixSlashes(kwsys_stl::string& path)
         path.replace(0,1,homeEnv);
         }
       }
-
+    // remove trailing slash if the path is more than 
+    // a single /
     pathCString = path.c_str();
-    if (*(pathCString+(path.size()-1)) == '/')
+    if(path.size() > 1 && *(pathCString+(path.size()-1)) == '/')
       {
-      path = path.substr(0, path.size()-1);
+      // if it is c:/ then do not remove the trailing slash
+      if(!((path.size() == 3 && pathCString[1] == ':')))
+        {
+        path = path.substr(0, path.size()-1);
+        }
       }
-
     }
 }
 
@@ -2503,7 +2507,6 @@ kwsys_stl::string SystemTools::CollapseFullPath(const char* in_path,
   // Split the input path components.
   kwsys_stl::vector<kwsys_stl::string> path_components;
   SystemTools::SplitPath(in_path, path_components);
-
   // If the input path is relative, start with a base path.
   if(path_components[0].length() == 0)
     {
@@ -2891,7 +2894,16 @@ kwsys_stl::string SystemTools::GetFilenamePath(const kwsys_stl::string& filename
   kwsys_stl::string::size_type slash_pos = fn.rfind("/");
   if(slash_pos != kwsys_stl::string::npos)
     {
-    return fn.substr(0, slash_pos);
+    kwsys_stl::string  ret = fn.substr(0, slash_pos);
+    if(ret.size() == 2 && ret[1] == ':')
+      {
+      return ret + '/';
+      }
+    if(ret.size() == 0)
+      {
+      return "/";
+      }
+    return ret;
     }
   else
     {