Added check if the binary directory changed. If it did, it will print the warning message

1 files changed, 48 insertions, 26 deletions

diff --git a/Source/cmCacheManager.cxx b/Source/cmCacheManager.cxx
index 9014216..b07ab5f 100644
--- a/Source/cmCacheManager.cxx
+++ b/Source/cmCacheManager.cxx
@@ -151,9 +151,9 @@ bool cmCacheManager::LoadCache(const char* path,
           (*realbuffer == ' ' ||
            *realbuffer == '\t' ||
            *realbuffer == '\n'))
-    {
+      {
       realbuffer++;
-    }
+      }
     // skip blank lines and comment lines
     if(realbuffer[0] == '#' || realbuffer[0] == 0)
       {
@@ -202,38 +202,38 @@ bool cmCacheManager::LoadCache(const char* path,
       {
       entryKey = reg.match(1);
       if ( excludes.find(entryKey) == excludes.end() )
-	{
-	e.m_Type = cmCacheManager::StringToType(reg.match(2).c_str());
-	// only load internal values if internal is set
-	// Load internal values if internal is set.
-	// If the entry is not internal to the cache being loaded
-	// or if it is in the list of internal entries to be
-	// imported, load it.
-	if ( internal || (e.m_Type != INTERNAL) || 
-	     (includes.find(entryKey) != includes.end()) )
-	  {
-	  // If we are loading the cache from another project,
-	  // make all loaded entries internal so that it is
-	  // not visible in the gui
-	  if (!internal)
-	    {
-	    e.m_Type = INTERNAL;
-            e.m_HelpString = "DO NOT EDIT, ";
+        { 
+        e.m_Type = cmCacheManager::StringToType(reg.match(2).c_str());
+        // only load internal values if internal is set
+        // Load internal values if internal is set.
+        // If the entry is not internal to the cache being loaded
+        // or if it is in the list of internal entries to be
+        // imported, load it.
+        if ( internal || (e.m_Type != INTERNAL) || 
+             (includes.find(entryKey) != includes.end()) )
+          {
+          // If we are loading the cache from another project,
+          // make all loaded entries internal so that it is
+          // not visible in the gui
+          if (!internal)
+            {
+            e.m_Type = INTERNAL;
+	    e.m_HelpString = "DO NOT EDIT, ";
             e.m_HelpString += entryKey;
             e.m_HelpString += " loaded from external file.  "
               "To change this value edit this file: ";
             e.m_HelpString += path;
             e.m_HelpString += "/CMakeCache.txt";
-	    }
-	  e.m_Value = reg.match(3);
-	  m_Cache[entryKey] = e;
-	  }
-	}
+            }
+          e.m_Value = reg.match(3);
+          m_Cache[entryKey] = e;
+          }
+        }
       }
     else
       {
-	cmSystemTools::Error("Parse error in cache file ", cacheFile.c_str(),
-			     ". Offending entry: ", realbuffer);
+      cmSystemTools::Error("Parse error in cache file ", cacheFile.c_str(),
+			   ". Offending entry: ", realbuffer);
       }
     }
   // if CMAKE version not found in the list file
@@ -248,6 +248,19 @@ bool cmCacheManager::LoadCache(const char* path,
                         "current loaded cache", cmCacheManager::INTERNAL);
     
     }
+  std::string currentcwd = path;
+  cmSystemTools::ConvertToUnixSlashes(currentcwd);
+  if(internal && this->GetCacheValue("CMAKE_CACHE_CWD") && 
+     std::string(this->GetCacheValue("CMAKE_CACHE_CWD")) != currentcwd) 
+    {
+    cmSystemTools::Error("The current directory is different"
+                         " than the one CMake was run before."
+                         " The binary files will be created "
+                         "in the previous directory. If that "
+                         "is not what you want, reedit the "
+                         "CMakeCache.txt");   
+    }
+
   return true;
 }
 
@@ -297,6 +310,15 @@ bool cmCacheManager::SaveCache(const char* path)
   this->AddCacheEntry("CMAKE_CACHE_MAJOR_VERSION", temp,
                       "Major version of cmake used to create the "
                       "current loaded cache", cmCacheManager::INTERNAL);
+
+  // Let us store the current working directory so that if somebody
+  // Copies it, he will not be surprised
+  std::string currentcwd = path;
+  cmSystemTools::ConvertToUnixSlashes(currentcwd);
+  this->AddCacheEntry("CMAKE_CACHE_CWD", currentcwd.c_str(),
+                      "This is the directory where cmake was running the"
+                      " last time", cmCacheManager::INTERNAL);
+
   fout << "# This is the CMakeCache file.\n"
        << "# For build in directory: " << path << "\n"
        << "# You can edit this file to change values found and used by cmake.\n"