diff --git a/Make/makedefs b/Make/makedefs
index 9d989003c..b6e72f5bf 100644
--- a/Make/makedefs
+++ b/Make/makedefs
@@ -117,9 +117,9 @@ ifeq ($(OS),IRIX)
 
   C++               = CC
   DEPFLAGS          = -M
-  INC               += 
+  INC               +=  -I/usr/local/include
   DEF               += -LANG:std -OPT:Olimit=0 \
-	 	       -DEBUG:wof=1682 -DEBUG:woff=3303\
+	 	       -DEBUG:woff=1682 -DEBUG:woff=3303\
 		       -MDupdate $(MAKEDEPEND)
   OPTF              = -O2 
   DBGF              = -g
@@ -130,7 +130,7 @@ ifeq ($(ARCH),64)
 else
     ARCHARGS          = -n32
 endif
-  LINKARGS          = -LANG:std -OPT:Olimit=0
+  LINKARGS          = -LANG:std -OPT:Olimit=0 -L/usr/local/lib32 -rpath /usr/local/lib32
   DYNAMICLIBRARYLIB = -ldl
   OSG_LIBS          = -losgGLUT -losgDB -losgUtil -losg 
   FREETYPE_LIB      = -lfreetype
diff --git a/include/osg/ImpostorSprite b/include/osg/ImpostorSprite
index dc604dc94..10c3f8f86 100644
--- a/include/osg/ImpostorSprite
+++ b/include/osg/ImpostorSprite
@@ -103,7 +103,7 @@ class SG_EXPORT ImpostorSprite : public Drawable
 
         /** calculate the pixel error value for passing in the ModelViewProjectionWindow transform,
           * which transform local coords into screen space.*/
-        const float ImpostorSprite::calcPixelError(const Matrix& MVPW) const;
+        const float calcPixelError(const Matrix& MVPW) const;
 
         void setTexture(Texture* tex,int s,int t);
 
diff --git a/include/osgUtil/CullVisitor b/include/osgUtil/CullVisitor
index f508710a4..16bd4d927 100644
--- a/include/osgUtil/CullVisitor
+++ b/include/osgUtil/CullVisitor
@@ -308,9 +308,7 @@ class OSGUTIL_EXPORT CullVisitor : public osg::NodeVisitor
             }
             else
             {
-                 // default construction to identity.
-                static osg::Matrix identity;
-                return identity;
+                return _identity;
             }
         }
 
@@ -322,9 +320,7 @@ class OSGUTIL_EXPORT CullVisitor : public osg::NodeVisitor
             }
             else
             {
-                 // default construction to identity.
-                static osg::Matrix identity;
-                return identity;
+                return _identity;
             }
         }
 
@@ -337,9 +333,7 @@ class OSGUTIL_EXPORT CullVisitor : public osg::NodeVisitor
             }
             else
             {
-                 // default construction to identity.
-                static osg::Matrix identity;
-                return identity;
+                return _identity;
             }
         }
 
@@ -355,9 +349,7 @@ class OSGUTIL_EXPORT CullVisitor : public osg::NodeVisitor
             }
             else
             {
-                 // default construction to identity.
-                static osg::Matrix identity;
-                return identity;
+                return _identity;
             }
         }
 
@@ -389,6 +381,7 @@ class OSGUTIL_EXPORT CullVisitor : public osg::NodeVisitor
         unsigned int                                       _bbCornerNear;
         unsigned int                                       _bbCornerFar;
 
+        osg::Matrix                                        _identity;
 
         osg::ref_ptr<RenderGraph>   _rootRenderGraph;
         RenderGraph*                _currentRenderGraph;
diff --git a/src/osgPlugins/lib3ds/atmosphere.cpp b/src/osgPlugins/lib3ds/atmosphere.cpp
index bee7d3d62..a19517d73 100644
--- a/src/osgPlugins/lib3ds/atmosphere.cpp
+++ b/src/osgPlugins/lib3ds/atmosphere.cpp
@@ -79,7 +79,6 @@ layer_fog_read(Lib3dsLayerFog *fog, FILE *f)
 {
   Lib3dsChunk c;
   Lib3dsWord chunk;
-  Lib3dsBool have_lin=LIB3DS_FALSE;
 
   if (!lib3ds_chunk_read_start(&c, LIB3DS_LAYER_FOG, f)) {
     return(LIB3DS_FALSE);
@@ -94,7 +93,6 @@ layer_fog_read(Lib3dsLayerFog *fog, FILE *f)
     switch (chunk) {
       case LIB3DS_LIN_COLOR_F:
         lib3ds_rgb_read(fog->col,f);
-        have_lin=LIB3DS_TRUE;
         break;
       case LIB3DS_COLOR_F:
         lib3ds_rgb_read(fog->col,f);
diff --git a/src/osgPlugins/lib3ds/background.cpp b/src/osgPlugins/lib3ds/background.cpp
index b4c6a71cc..3931f11b9 100644
--- a/src/osgPlugins/lib3ds/background.cpp
+++ b/src/osgPlugins/lib3ds/background.cpp
@@ -39,7 +39,6 @@ solid_bgnd_read(Lib3dsBackground *background, FILE *f)
 {
   Lib3dsChunk c;
   Lib3dsWord chunk;
-  Lib3dsBool have_lin=LIB3DS_FALSE;
           
   if (!lib3ds_chunk_read_start(&c, LIB3DS_SOLID_BGND, f)) {
     return(LIB3DS_FALSE);
@@ -49,7 +48,6 @@ solid_bgnd_read(Lib3dsBackground *background, FILE *f)
     switch (chunk) {
       case LIB3DS_LIN_COLOR_F:
         lib3ds_rgb_read(background->solid.col, f);
-        have_lin=LIB3DS_TRUE;
         break;
       case LIB3DS_COLOR_F:
         lib3ds_rgb_read(background->solid.col, f);
diff --git a/src/osgPlugins/lib3ds/tracks.cpp b/src/osgPlugins/lib3ds/tracks.cpp
index 9dd94e08c..2e5873b64 100644
--- a/src/osgPlugins/lib3ds/tracks.cpp
+++ b/src/osgPlugins/lib3ds/tracks.cpp
@@ -1160,14 +1160,14 @@ lib3ds_quat_track_read(Lib3dsQuatTrack *track, FILE *f)
 {
   int keys;
   int i,j;
-  Lib3dsQuatKey *p,*k;
+  Lib3dsQuatKey *k;
 
   track->flags=lib3ds_word_read(f);
   lib3ds_dword_read(f);
   lib3ds_dword_read(f);
   keys=lib3ds_intd_read(f);
 
-  for (p=0,i=0; i<keys; p=k,++i) {
+  for (i=0; i<keys; ++i) {
     k=lib3ds_quat_key_new();
     if (!lib3ds_tcb_read(&k->tcb, f)) {
       return(LIB3DS_FALSE);
diff --git a/src/osgPlugins/txp/TrPageParser.cpp b/src/osgPlugins/txp/TrPageParser.cpp
index b9c3248db..10a515986 100644
--- a/src/osgPlugins/txp/TrPageParser.cpp
+++ b/src/osgPlugins/txp/TrPageParser.cpp
@@ -270,7 +270,7 @@ void* billboardRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
         Billboard* bl = new Billboard();
         int m;
         bill.GetMode(m);
-        if( m = trpgBillboard::Eye) 
+        if( m == trpgBillboard::Eye) 
             bl->setMode(Billboard::POINT_ROT_EYE);
         else if(m == trpgBillboard::World )
             bl->setMode(Billboard::POINT_ROT_WORLD);
diff --git a/src/osgPlugins/txp/trpage_geom.cpp b/src/osgPlugins/txp/trpage_geom.cpp
index 08f072859..4ee5d610d 100644
--- a/src/osgPlugins/txp/trpage_geom.cpp
+++ b/src/osgPlugins/txp/trpage_geom.cpp
@@ -643,9 +643,10 @@ bool trpgGeometry::Write(trpgWriteBuffer &buf)
                 buf.Add(td.doubleData[j]);
             buf.End();
 
-            float u;
-            for (j=0;j<num*2;j++)
-                u = (float)td.doubleData[j];
+            // UNUSED CODE:
+            //float u;
+            //for (j=0;j<num*2;j++)
+            //    u = (float)td.doubleData[j];
         }
     }
 
diff --git a/src/osgPlugins/txp/trpage_geom.h b/src/osgPlugins/txp/trpage_geom.h
index 8c4befa29..952dd744a 100644
--- a/src/osgPlugins/txp/trpage_geom.h
+++ b/src/osgPlugins/txp/trpage_geom.h
@@ -515,7 +515,7 @@ public:
     } LightQuality;
 
     // Struct for Performer Lights
-    typedef struct PerformerAttr {
+    struct PerformerAttr {
         PerformerAttr() : flags(0),minPixelSize(0),maxPixelSize(0),actualSize(0),
             transparentPixelSize(0),transparentFallofExp(0),transparentScale(0),
             transparentClamp(0),fogScale(0) {};
@@ -531,7 +531,7 @@ public:
     };
 
     // Struct for Animated Lights
-    typedef struct AnimationAttr {
+    struct AnimationAttr {
         AnimationAttr() : period(0),phaseDelay(0),timeOn(0),vector(trpg3dPoint(0,0,0)),flags(0) {};
         float64                    period;
         float64                    phaseDelay;
@@ -541,7 +541,7 @@ public:
     };
 
     // Struct for Calligraphic Lights
-    typedef struct CalligraphicAttr {
+    struct CalligraphicAttr {
         CalligraphicAttr() : drawOrder(0),minDefocus(0),maxDefocus(0) {} ;
         int32                    drawOrder;
         float64                    minDefocus;
diff --git a/src/osgPlugins/txp/trpage_rarchive.cpp b/src/osgPlugins/txp/trpage_rarchive.cpp
index fe1c9e561..e56e8d087 100644
--- a/src/osgPlugins/txp/trpage_rarchive.cpp
+++ b/src/osgPlugins/txp/trpage_rarchive.cpp
@@ -105,8 +105,6 @@ void trpgr_Archive::CloseFile()
 // Run through the rest of the header information
 bool trpgr_Archive::ReadHeader()
 {
-    int ret;
-
     if (!fp || headerRead)
         return false;
 
@@ -125,7 +123,7 @@ bool trpgr_Archive::ReadHeader()
     trpgMemReadBuffer buf(ness);
     buf.SetLength(headLen);
     char *data = buf.GetDataPtr();
-    if ((ret = fread(data,1,headLen,fp)) != headLen)  return false;
+    if (fread(data,1,headLen,fp) != headLen)  return false;
 
     // Set up a parser
     // Catch the tables we need for the archive
diff --git a/src/osgPlugins/txp/trpage_readbuf.cpp b/src/osgPlugins/txp/trpage_readbuf.cpp
index f68467535..87ab95e0f 100644
--- a/src/osgPlugins/txp/trpage_readbuf.cpp
+++ b/src/osgPlugins/txp/trpage_readbuf.cpp
@@ -501,8 +501,7 @@ bool trpgrAppFile::Read(char *data,int32 offset,uint32 dataSize)
     if (!valid)  return false;
 
     // Seek to the right place
-    int result;
-    if ((result = fseek(fp,offset,SEEK_SET))) {
+    if (fseek(fp,offset,SEEK_SET)) {
         valid = false;
         return false;
     }
diff --git a/src/osgPlugins/txp/trpage_scene.cpp b/src/osgPlugins/txp/trpage_scene.cpp
index 6eec322f3..d9182f3ef 100644
--- a/src/osgPlugins/txp/trpage_scene.cpp
+++ b/src/osgPlugins/txp/trpage_scene.cpp
@@ -493,7 +493,7 @@ bool trpgSceneGraphParser::EndChildren(void *in_node)
     // We don't need it here, but this is the node we just
     //  finished putting children under.  If you need to close
     //  it out in some way, do that here
-    trpgReadNode *node = (trpgReadNode *)in_node;
+    //trpgReadNode *node = (trpgReadNode *)in_node;
 
     // Get the parent above the current one
     int pos = parents.size()-2;
diff --git a/src/osgPlugins/txp/trpage_warchive.cpp b/src/osgPlugins/txp/trpage_warchive.cpp
index 8faf8dc33..378a73fc6 100644
--- a/src/osgPlugins/txp/trpage_warchive.cpp
+++ b/src/osgPlugins/txp/trpage_warchive.cpp
@@ -759,7 +759,6 @@ public:
 };
 void trpgwGeomHelper::Optimize()
 {
-    bool isStrip = false;
     int dtype = (dataType == UseDouble ? trpgGeometry::DoubleData : trpgGeometry::FloatData);
 
     // Potentially writing to all of these