diff --git a/Source/CursesDialog/cmCursesLongMessageForm.cxx b/Source/CursesDialog/cmCursesLongMessageForm.cxx
index c66147b319..1c48d8c7c2 100644
--- a/Source/CursesDialog/cmCursesLongMessageForm.cxx
+++ b/Source/CursesDialog/cmCursesLongMessageForm.cxx
@@ -53,13 +53,13 @@ void cmCursesLongMessageForm::UpdateStatusBar()
   getmaxyx(stdscr, y, x);
 
   char bar[cmCursesMainForm::MAX_WIDTH];
-  int size = strlen(this->Title.c_str());
+  size_t size = strlen(this->Title.c_str());
   if ( size >= cmCursesMainForm::MAX_WIDTH )
     {
     size = cmCursesMainForm::MAX_WIDTH-1;
     }
   strncpy(bar, this->Title.c_str(), size);
-  for(int i=size-1; i<cmCursesMainForm::MAX_WIDTH; i++) bar[i] = ' ';
+  for(size_t i=size-1; i<cmCursesMainForm::MAX_WIDTH; i++) bar[i] = ' ';
 
   int width;
   if (x < cmCursesMainForm::MAX_WIDTH )
@@ -76,8 +76,8 @@ void cmCursesLongMessageForm::UpdateStatusBar()
   char version[cmCursesMainForm::MAX_WIDTH];
   char vertmp[128];
   sprintf(vertmp,"CMake Version %s", cmVersion::GetCMakeVersion());
-  int sideSpace = (width-strlen(vertmp));
-  for(int i=0; i<sideSpace; i++) { version[i] = ' '; }
+  size_t sideSpace = (width-strlen(vertmp));
+  for(size_t i=0; i<sideSpace; i++) { version[i] = ' '; }
   sprintf(version+sideSpace, "%s", vertmp);
   version[width] = '\0';
 
diff --git a/Source/CursesDialog/cmCursesMainForm.cxx b/Source/CursesDialog/cmCursesMainForm.cxx
index cd231ad909..805d5ec125 100644
--- a/Source/CursesDialog/cmCursesMainForm.cxx
+++ b/Source/CursesDialog/cmCursesMainForm.cxx
@@ -454,7 +454,7 @@ void cmCursesMainForm::PrintKeys(int process /* = 0 */)
   if (cw)
     {
     sprintf(firstLine, "Page %d of %d", cw->GetPage(), this->NumberOfPages);
-    curses_move(0,65-strlen(firstLine)-1);
+    curses_move(0,65-static_cast<unsigned int>(strlen(firstLine))-1);
     printw(firstLine);
     }
 //    }
@@ -526,8 +526,8 @@ void cmCursesMainForm::UpdateStatusBar(const char* message)
   // Join the key, help string and pad with spaces
   // (or truncate) as necessary
   char bar[cmCursesMainForm::MAX_WIDTH];
-  int i, curFieldLen = strlen(curField);
-  int helpLen = strlen(help);
+  size_t i, curFieldLen = strlen(curField);
+  size_t helpLen = strlen(help);
 
   int width;
   if (x < cmCursesMainForm::MAX_WIDTH )
@@ -592,7 +592,7 @@ void cmCursesMainForm::UpdateStatusBar(const char* message)
   char version[cmCursesMainForm::MAX_WIDTH];
   char vertmp[128];
   sprintf(vertmp,"CMake Version %s", cmVersion::GetCMakeVersion());
-  int sideSpace = (width-strlen(vertmp));
+  size_t sideSpace = (width-strlen(vertmp));
   for(i=0; i<sideSpace; i++) { version[i] = ' '; }
   sprintf(version+sideSpace, "%s", vertmp);
   version[width] = '\0';
@@ -795,7 +795,7 @@ void cmCursesMainForm::RemoveEntry(const char* value)
 // copy from the list box to the cache manager
 void cmCursesMainForm::FillCacheManagerFromUI()
 {   
-  int size = this->Entries->size();
+  size_t size = this->Entries->size();
   for(int i=0; i < size; i++)
     {
     cmCacheManager::CacheIterator it = 
@@ -866,7 +866,7 @@ void cmCursesMainForm::HandleInput()
       std::string searchstr = "Search: " + this->SearchString;
       this->UpdateStatusBar( searchstr.c_str() );
       this->PrintKeys(1);
-      curses_move(y-5,searchstr.size());
+      curses_move(y-5,static_cast<unsigned int>(searchstr.size()));
       //curses_move(1,1);
       touchwin(stdscr); 
       refresh();
diff --git a/Source/CursesDialog/cmCursesMainForm.h b/Source/CursesDialog/cmCursesMainForm.h
index 975199988b..4084415bd8 100644
--- a/Source/CursesDialog/cmCursesMainForm.h
+++ b/Source/CursesDialog/cmCursesMainForm.h
@@ -147,7 +147,7 @@ protected:
   // Where is cmake executable
   std::string WhereCMake;
   // Number of entries shown (depends on mode -normal or advanced-)
-  int NumberOfVisibleEntries;
+  size_t NumberOfVisibleEntries;
   bool AdvancedMode;
   // Did the iteration converge (no new entries) ?
   bool OkToGenerate;
diff --git a/Source/cmCTest.cxx b/Source/cmCTest.cxx
index bd69d6c5ee..4d56257c42 100644
--- a/Source/cmCTest.cxx
+++ b/Source/cmCTest.cxx
@@ -1169,7 +1169,7 @@ int cmCTest::RunMakeCommand(const char* command, std::string* output,
         if ( tick % tick_line_len == 0 && tick > 0 )
           {
           cmCTestLog(this, HANDLER_OUTPUT, "  Size: "
-            << int((output->size() / 1024.0) + 1) << "K" << std::endl
+            << int((double(output->size()) / 1024.0) + 1) << "K" << std::endl
             << "    " << std::flush);
           }
         }
@@ -1181,7 +1181,7 @@ int cmCTest::RunMakeCommand(const char* command, std::string* output,
       }
     }
   cmCTestLog(this, OUTPUT, " Size of output: "
-    << int(output->size() / 1024.0) << "K" << std::endl);
+    << int(double(output->size()) / 1024.0) << "K" << std::endl);
 
   cmsysProcess_WaitForExit(cp, 0);
 
diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index 5be53c2685..0badbba4d0 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -1989,9 +1989,9 @@ namespace{
 # pragma warn -8066 /* unreachable code */
 #endif
   
-int copy_data(struct archive *ar, struct archive *aw)
+long copy_data(struct archive *ar, struct archive *aw)
 {
-  int r;
+  long r;
   const void *buff;
   size_t size;
   off_t offset;
@@ -2136,7 +2136,7 @@ int cmSystemTools::WaitForLine(cmsysProcess* process, std::string& line,
         }
       else if(*outiter == '\n' || *outiter == '\0')
         {
-        int length = outiter-out.begin();
+        std::vector<char>::size_type length = outiter-out.begin();
         if(length > 1 && *(outiter-1) == '\r')
           {
           --length;
@@ -2159,7 +2159,7 @@ int cmSystemTools::WaitForLine(cmsysProcess* process, std::string& line,
         }
       else if(*erriter == '\n' || *erriter == '\0')
         {
-        int length = erriter-err.begin();
+        std::vector<char>::size_type length = erriter-err.begin();
         if(length > 1 && *(erriter-1) == '\r')
           {
           --length;
diff --git a/Source/cm_utf8.c b/Source/cm_utf8.c
index 9c11f2b68c..c9bf259acc 100644
--- a/Source/cm_utf8.c
+++ b/Source/cm_utf8.c
@@ -62,7 +62,7 @@ const char* cm_utf8_decode_character(const char* first, const char* last,
   /* Extract bits from this multi-byte character.  */
   {
   unsigned int uc = c & cm_utf8_mask[ones];
-  unsigned char left;
+  int left;
   for(left = ones-1; left && first != last; --left)
     {
     c = (unsigned char)*first++;