diff --git a/applications/osgfilecache/osgfilecache.cpp b/applications/osgfilecache/osgfilecache.cpp
index 1be395215..d71593498 100644
--- a/applications/osgfilecache/osgfilecache.cpp
+++ b/applications/osgfilecache/osgfilecache.cpp
@@ -29,6 +29,7 @@
 #include <algorithm>
 
 #include <signal.h>
+#include <stdlib.h>
 
 static bool s_ExitApplication = false;
 
diff --git a/include/osgDB/FileUtils b/include/osgDB/FileUtils
index 28c750ab4..2150cf492 100644
--- a/include/osgDB/FileUtils
+++ b/include/osgDB/FileUtils
@@ -19,6 +19,7 @@
 #include <vector>
 #include <deque>
 #include <string>
+#include <stdio.h>
 
 namespace osgDB {
 
diff --git a/src/osgDB/ConvertUTF.cpp b/src/osgDB/ConvertUTF.cpp
index 0930528ac..682cdb230 100644
--- a/src/osgDB/ConvertUTF.cpp
+++ b/src/osgDB/ConvertUTF.cpp
@@ -15,6 +15,7 @@
 #include <osg/Notify>
 
 #include <string.h>
+#include <wchar.h>
 
 #if defined(WIN32) && !defined(__CYGWIN__)
 #define WIN32_LEAN_AND_MEAN
diff --git a/src/osgDB/DatabasePager.cpp b/src/osgDB/DatabasePager.cpp
index 261e68ff7..1378d516b 100644
--- a/src/osgDB/DatabasePager.cpp
+++ b/src/osgDB/DatabasePager.cpp
@@ -30,6 +30,7 @@
 #include <functional>
 #include <set>
 
+#include <stdlib.h>
 #include <string.h>
 
 #ifdef WIN32
diff --git a/src/osgDB/FileUtils.cpp b/src/osgDB/FileUtils.cpp
index 6b8399dec..a0c031565 100644
--- a/src/osgDB/FileUtils.cpp
+++ b/src/osgDB/FileUtils.cpp
@@ -52,6 +52,7 @@
     #define stat64 stat
 #endif
 
+    #include <stdlib.h>
     #include <unistd.h>
     #include <sys/types.h>
     #include <sys/stat.h>
diff --git a/src/osgDB/Registry.cpp b/src/osgDB/Registry.cpp
index d34579a80..7af9434a4 100644
--- a/src/osgDB/Registry.cpp
+++ b/src/osgDB/Registry.cpp
@@ -34,6 +34,8 @@
 #include <algorithm>
 #include <set>
 
+#include <stdlib.h>
+
 #if defined(__sgi)
     #include <ctype.h>
 #elif defined(__GNUC__) || !defined(WIN32) || defined(__MWERKS__)
diff --git a/src/osgParticle/PrecipitationEffect.cpp b/src/osgParticle/PrecipitationEffect.cpp
index 71ae54246..62467fc97 100644
--- a/src/osgParticle/PrecipitationEffect.cpp
+++ b/src/osgParticle/PrecipitationEffect.cpp
@@ -11,6 +11,8 @@
  * OpenSceneGraph Public License for more details.
 */
 
+#include <stdlib.h>
+
 
 #include<OpenThreads/ScopedLock>
 
diff --git a/src/osgPlugins/ac/ac3d.cpp b/src/osgPlugins/ac/ac3d.cpp
index 985db6548..cf3b1dc85 100644
--- a/src/osgPlugins/ac/ac3d.cpp
+++ b/src/osgPlugins/ac/ac3d.cpp
@@ -6,6 +6,7 @@
 
 #include <vector>
 #include <iostream>
+#include <stdlib.h>
 
 #include <osg/GL>
 #include <osg/GLU>
diff --git a/src/osgPlugins/bsp/VBSPEntity.cpp b/src/osgPlugins/bsp/VBSPEntity.cpp
index 281459fe7..c106e262b 100644
--- a/src/osgPlugins/bsp/VBSPEntity.cpp
+++ b/src/osgPlugins/bsp/VBSPEntity.cpp
@@ -8,6 +8,7 @@
 #include <osgDB/FileNameUtils>
 #include <iostream>
 #include <sstream>
+#include <stdlib.h>
 #include <string.h>
 
 
diff --git a/src/osgPlugins/dw/ReaderWriterDW.cpp b/src/osgPlugins/dw/ReaderWriterDW.cpp
index 4a1000aee..be4956014 100644
--- a/src/osgPlugins/dw/ReaderWriterDW.cpp
+++ b/src/osgPlugins/dw/ReaderWriterDW.cpp
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 // reading a design workshop file utility
 // (c) GW Michel, 2001-2003.
diff --git a/src/osgPlugins/ive/DataOutputStream.cpp b/src/osgPlugins/ive/DataOutputStream.cpp
index bae1e50ec..e5047c4bc 100644
--- a/src/osgPlugins/ive/DataOutputStream.cpp
+++ b/src/osgPlugins/ive/DataOutputStream.cpp
@@ -114,6 +114,7 @@
 #include <osgDB/FileUtils>
 #include <osgDB/fstream>
 
+#include <stdlib.h>
 #include <sstream>
 
 using namespace ive;
diff --git a/src/osgPlugins/md2/ReaderWriterMD2.cpp b/src/osgPlugins/md2/ReaderWriterMD2.cpp
index 7045a6883..a839ac18f 100644
--- a/src/osgPlugins/md2/ReaderWriterMD2.cpp
+++ b/src/osgPlugins/md2/ReaderWriterMD2.cpp
@@ -25,6 +25,7 @@
 #include <osgDB/FileNameUtils>
 #include <osgDB/FileUtils>
 
+#include <stdlib.h>
 #include <string.h>
 #include <fcntl.h>
 
diff --git a/src/osgPlugins/normals/ReaderWriterNormals.cpp b/src/osgPlugins/normals/ReaderWriterNormals.cpp
index 4db1a3364..a67284c8f 100644
--- a/src/osgPlugins/normals/ReaderWriterNormals.cpp
+++ b/src/osgPlugins/normals/ReaderWriterNormals.cpp
@@ -1,6 +1,7 @@
 #include <iostream>
 #include <sstream>
 #include <math.h>
+#include <stdlib.h>
 #include <osg/Notify>
 #include <osg/Group>
 #include <osgDB/ReadFile>
diff --git a/src/osgPlugins/obj/ReaderWriterOBJ.cpp b/src/osgPlugins/obj/ReaderWriterOBJ.cpp
index 2858ad6c6..9809ac88b 100644
--- a/src/osgPlugins/obj/ReaderWriterOBJ.cpp
+++ b/src/osgPlugins/obj/ReaderWriterOBJ.cpp
@@ -20,6 +20,7 @@
     #pragma warning( disable : 4786 )
 #endif
 
+#include <stdlib.h>
 #include <string>
 
 #include <osg/Notify>
diff --git a/src/osgPlugins/osg/Texture.cpp b/src/osgPlugins/osg/Texture.cpp
index b4fe897d0..160565dae 100644
--- a/src/osgPlugins/osg/Texture.cpp
+++ b/src/osgPlugins/osg/Texture.cpp
@@ -6,6 +6,7 @@
 #include <osgDB/Input>
 #include <osgDB/Output>
 
+#include <stdlib.h>
 #include <string.h>
 
 using namespace osg;
diff --git a/src/osgPlugins/osgtgz/ReaderWriterOSGTGZ.cpp b/src/osgPlugins/osgtgz/ReaderWriterOSGTGZ.cpp
index 795094662..d7515c8c6 100644
--- a/src/osgPlugins/osgtgz/ReaderWriterOSGTGZ.cpp
+++ b/src/osgPlugins/osgtgz/ReaderWriterOSGTGZ.cpp
@@ -2,6 +2,7 @@
 #include <sys/types.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include <osg/Geode>
diff --git a/src/osgPlugins/pnm/ReaderWriterPNM.cpp b/src/osgPlugins/pnm/ReaderWriterPNM.cpp
index 08a418132..6ac775689 100644
--- a/src/osgPlugins/pnm/ReaderWriterPNM.cpp
+++ b/src/osgPlugins/pnm/ReaderWriterPNM.cpp
@@ -11,6 +11,7 @@
 #include <osgDB/fstream>
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 using namespace osg;
diff --git a/src/osgPlugins/tgz/ReaderWriterTGZ.cpp b/src/osgPlugins/tgz/ReaderWriterTGZ.cpp
index 78b5ec469..757163931 100644
--- a/src/osgPlugins/tgz/ReaderWriterTGZ.cpp
+++ b/src/osgPlugins/tgz/ReaderWriterTGZ.cpp
@@ -2,6 +2,7 @@
 #include <sys/types.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include <osg/Geode>
diff --git a/src/osgPlugins/txp/ReaderWriterTXP.cpp b/src/osgPlugins/txp/ReaderWriterTXP.cpp
index 46e7044c0..c26739708 100644
--- a/src/osgPlugins/txp/ReaderWriterTXP.cpp
+++ b/src/osgPlugins/txp/ReaderWriterTXP.cpp
@@ -10,6 +10,7 @@
 
 #include <iostream>
 #include <sstream>
+#include <stdlib.h>
 #include <string.h>
 
 #include "ReaderWriterTXP.h"
diff --git a/src/osgPlugins/zip/ReaderWriterZIP.cpp b/src/osgPlugins/zip/ReaderWriterZIP.cpp
index 604e79175..3f2198095 100644
--- a/src/osgPlugins/zip/ReaderWriterZIP.cpp
+++ b/src/osgPlugins/zip/ReaderWriterZIP.cpp
@@ -2,6 +2,7 @@
 #include <sys/types.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include <osg/Geode>
diff --git a/src/osgShadow/ConvexPolyhedron.cpp b/src/osgShadow/ConvexPolyhedron.cpp
index 10a533d32..ecb77d4a0 100644
--- a/src/osgShadow/ConvexPolyhedron.cpp
+++ b/src/osgShadow/ConvexPolyhedron.cpp
@@ -23,6 +23,7 @@
 #include<deque>
 #include<algorithm>
 
+#include <stdio.h>
 #include <string.h>
 
 using namespace osgShadow;
diff --git a/src/osgViewer/Viewer.cpp b/src/osgViewer/Viewer.cpp
index 3eca6b51b..cf1904011 100644
--- a/src/osgViewer/Viewer.cpp
+++ b/src/osgViewer/Viewer.cpp
@@ -12,6 +12,7 @@
 */
 
 #include <stdio.h>
+#include <stdlib.h>
 
 #include <osg/DeleteHandler>
 #include <osg/io_utils>
diff --git a/src/osgWidget/Util.cpp b/src/osgWidget/Util.cpp
index fec924256..033de00bd 100644
--- a/src/osgWidget/Util.cpp
+++ b/src/osgWidget/Util.cpp
@@ -1,5 +1,7 @@
 // -*-c++-*- osgWidget - Code by: Jeremy Moles (cubicool) 2007-2008
 
+#include <stdlib.h>
+
 #include <osg/io_utils>
 
 #include <osgGA/TrackballManipulator>