diff --git a/Source/cmGlobalNinjaGenerator.cxx b/Source/cmGlobalNinjaGenerator.cxx
index 0e89fab74..40348e673 100644
--- a/Source/cmGlobalNinjaGenerator.cxx
+++ b/Source/cmGlobalNinjaGenerator.cxx
@@ -66,7 +66,7 @@ std::string cmGlobalNinjaGenerator::EncodeIdent(const std::string &ident,
   if (std::find_if(ident.begin(), ident.end(),
                    std::not1(std::ptr_fun(IsIdentChar))) != ident.end()) {
     static unsigned VarNum = 0;
-    std::ostringstream names;
+    cmOStringStream names;
     names << "ident" << VarNum++;
     vars << names.str() << " = " << ident << "\n";
     return "$" + names.str();
@@ -123,7 +123,7 @@ void cmGlobalNinjaGenerator::WriteBuild(std::ostream& os,
 
   cmGlobalNinjaGenerator::WriteComment(os, comment);
 
-  std::ostringstream builds;
+  cmOStringStream builds;
 
   // TODO: Better formatting for when there are multiple input/output files.
 
@@ -825,7 +825,7 @@ void cmGlobalNinjaGenerator::WriteTargetRebuildManifest(std::ostream& os)
   cmLocalGenerator *lg = this->LocalGenerators[0];
   cmMakefile* mfRoot = lg->GetMakefile();
 
-  std::ostringstream cmd;
+  cmOStringStream cmd;
   cmd << lg->ConvertToOutputFormat(
            mfRoot->GetRequiredDefinition("CMAKE_COMMAND"),
            cmLocalGenerator::SHELL)
diff --git a/Source/cmLocalNinjaGenerator.cxx b/Source/cmLocalNinjaGenerator.cxx
index 425b21917..f6a6bc29b 100644
--- a/Source/cmLocalNinjaGenerator.cxx
+++ b/Source/cmLocalNinjaGenerator.cxx
@@ -280,7 +280,7 @@ std::string cmLocalNinjaGenerator::BuildCommandLine(
   // $in variables. A discussion about dealing with multiple commands in
   // a rule is started here:
   // groups.google.com/group/ninja-build/browse_thread/thread/d515f23a78986008
-  std::ostringstream cmd;
+  cmOStringStream cmd;
   for (std::vector<std::string>::const_iterator li = cmdLines.begin();
        li != cmdLines.end(); ++li) {
     if (li != cmdLines.begin())
@@ -299,7 +299,7 @@ void cmLocalNinjaGenerator::AppendCustomCommandLines(const cmCustomCommand *cc,
     if (!wd)
       wd = this->GetMakefile()->GetStartOutputDirectory();
 
-    std::ostringstream cdCmd;
+    cmOStringStream cdCmd;
     cdCmd << "cd " << this->ConvertToOutputFormat(wd, SHELL);
     cmdLines.push_back(cdCmd.str());
   }
diff --git a/Source/cmNinjaNormalTargetGenerator.cxx b/Source/cmNinjaNormalTargetGenerator.cxx
index 8b86a98d2..17510911f 100644
--- a/Source/cmNinjaNormalTargetGenerator.cxx
+++ b/Source/cmNinjaNormalTargetGenerator.cxx
@@ -215,10 +215,10 @@ cmNinjaNormalTargetGenerator
       this->GetLocalGenerator()->BuildCommandLine(linkCmds);
 
     // Write the linker rule.
-    std::ostringstream comment;
+    cmOStringStream comment;
     comment << "Rule for linking " << this->TargetLinkLanguage << " "
             << this->GetVisibleTypeName() << ".";
-    std::ostringstream description;
+    cmOStringStream description;
     description << "Linking " << this->TargetLinkLanguage << " "
                 << this->GetVisibleTypeName() << " $out";
     this->GetGlobalGenerator()->AddRule(ruleName,
@@ -353,7 +353,7 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
                                    /*implib=*/true).c_str());
 
   // Compute the comment.
-  std::ostringstream comment;
+  cmOStringStream comment;
   comment << "Link the " << this->GetVisibleTypeName() << " "
           << targetOutputReal;
 
diff --git a/Source/cmNinjaTargetGenerator.cxx b/Source/cmNinjaTargetGenerator.cxx
index e419a4d54..32b8f932d 100644
--- a/Source/cmNinjaTargetGenerator.cxx
+++ b/Source/cmNinjaTargetGenerator.cxx
@@ -365,9 +365,9 @@ cmNinjaTargetGenerator
     this->GetLocalGenerator()->BuildCommandLine(compileCmds);
 
   // Write the rule for compiling file of the given language.
-  std::ostringstream comment;
+  cmOStringStream comment;
   comment << "Rule for compiling " << language << " files.";
-  std::ostringstream description;
+  cmOStringStream description;
   description << "Building " << language << " object $out";
   this->GetGlobalGenerator()->AddRule(this->LanguageCompilerRule(language),
                                       cmdLine,
diff --git a/Source/cmQtAutomoc.cxx b/Source/cmQtAutomoc.cxx
index ca27530fb..113d67870 100644
--- a/Source/cmQtAutomoc.cxx
+++ b/Source/cmQtAutomoc.cxx
@@ -18,6 +18,7 @@
 #include "cmSystemTools.h"
 
 #include <cmsys/Terminal.h>
+#include <cmsys/ios/sstream>
 
 #include <string.h>
 #if defined(__APPLE__)
@@ -549,7 +550,7 @@ bool cmQtAutomoc::RunAutomoc()
     this->GenerateMoc(it->first, it->second);
     }
 
-  std::stringstream outStream(std::stringstream::out);
+  cmsys_ios::stringstream outStream;
   outStream << "/* This file is autogenerated, do not edit*/\n";
 
   bool automocCppChanged = false;
@@ -1077,7 +1078,7 @@ bool cmQtAutomoc::EndsWith(const std::string& str, const std::string& with)
 std::string cmQtAutomoc::ReadAll(const std::string& filename)
 {
   std::ifstream file(filename.c_str());
-  std::stringstream stream;
+  cmsys_ios::stringstream stream;
   stream << file.rdbuf();
   file.close();
   return stream.str();