diff --git a/examples/osglauncher/osglauncher.cpp b/examples/osglauncher/osglauncher.cpp
index 793b8b4be..c64f5625e 100644
--- a/examples/osglauncher/osglauncher.cpp
+++ b/examples/osglauncher/osglauncher.cpp
@@ -194,6 +194,8 @@ class Xample
     {
         return app;
     }
+  private:
+      Xample() {}
 }; // end class Xample
 
 
diff --git a/examples/osgviewerGLUT/osgviewerGLUT.cpp b/examples/osgviewerGLUT/osgviewerGLUT.cpp
index 4bca3c1c1..5fee7d298 100644
--- a/examples/osgviewerGLUT/osgviewerGLUT.cpp
+++ b/examples/osgviewerGLUT/osgviewerGLUT.cpp
@@ -20,6 +20,8 @@
 // Simple example using GLUT to create an OpenGL window and OSG for rendering.
 // Derived from osgGLUTsimple.cpp and osgkeyboardmouse.cpp
 
+#include <osg/Config>
+
 #if defined(_MSC_VER) && defined(OSG_DISABLE_MSVC_WARNINGS)
     // disable warning "glutCreateMenu_ATEXIT_HACK' : unreferenced local function has been removed"
     #pragma warning( disable : 4505 )
@@ -29,6 +31,7 @@
 #ifdef WIN32
 #include <windows.h>
 #endif
+
 #ifdef __APPLE__
 #  include <GLUT/glut.h>
 #else
diff --git a/src/osgPlugins/cfg/ConfigLexer.cpp b/src/osgPlugins/cfg/ConfigLexer.cpp
index 166df3804..31c837be6 100644
--- a/src/osgPlugins/cfg/ConfigLexer.cpp
+++ b/src/osgPlugins/cfg/ConfigLexer.cpp
@@ -9,6 +9,8 @@
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 5
 
+#include <osg/Config>
+
 #if defined(_MSC_VER) && defined(OSG_DISABLE_MSVC_WARNINGS)
     // disable '=' : conversion from 'int' to 'char', possible loss of data style warnings
     #pragma warning( disable : 4244)
diff --git a/src/osgUtil/TriStrip_graph_array.h b/src/osgUtil/TriStrip_graph_array.h
index 92bd1191e..21fa3eb22 100644
--- a/src/osgUtil/TriStrip_graph_array.h
+++ b/src/osgUtil/TriStrip_graph_array.h
@@ -79,6 +79,7 @@ public:
     class arc
     {
     public:
+        arc() {}
         arc & mark()                                    { m_Marker = true; return (* this); }
         arc & unmark()                                    { m_Marker = false; return (* this); }
         bool marked() const                                { return m_Marker; }