From Mathias Froehlich, build fixes

include/osg/BufferObject

@@ -19,6 +19,7 @@
 #include <osg/buffered_value>
 #include <osg/FrameStamp>
 
+#include <iosfwd>
 #include <list>
 #include <map>
 

src/osgDB/DatabasePager.cpp

@@ -228,9 +228,7 @@ public:
                         if (_pagedLODs.erase(clod) > 0)
                             leftToRemove--;
                     }
-                    childrenRemoved.insert(childrenRemoved.end(),
-                                           expiredChildren.begin(),
-                                           expiredChildren.end());
+                    std::copy(expiredChildren.begin(), expiredChildren.end(), std::back_inserter(childrenRemoved));
                 }
             
                 // advance the iterator to the next element

src/osgPlugins/osg/AsciiStreamOperator.h

@@ -1,6 +1,7 @@
 #ifndef OSGDB_ASCIISTREAMOPERATOR
 #define OSGDB_ASCIISTREAMOPERATOR
 
+#include <ostream>
 #include <osgDB/StreamOperator>
 
 class AsciiOutputIterator : public osgDB::OutputIterator
@@ -69,7 +70,7 @@ public:
     
     virtual void writeGLenum( const osgDB::ObjectGLenum& value )
     {
-        GLenum e = value.get(); 
+        GLenum e = value.get();
         const std::string& enumString = osgDB::Registry::instance()->getObjectWrapperManager()->getString("GL", e);
         indentIfRequired(); *_out << enumString << ' ';
     }
@@ -104,7 +105,7 @@ public:
             wrappedStr += ch;
         }
         
-        wrappedStr.insert( 0, 1, '\"' );
+        wrappedStr.insert( std::string::size_type(0), 1, '\"' );
         wrappedStr += '\"';
 
         indentIfRequired();

src/osgPlugins/osg/XmlStreamOperator.h

@@ -161,7 +161,7 @@ public:
             else if ( ch=='\\' ) realStr += '\\';
             realStr += ch;
         }
-        realStr.insert( 0, 1, '\"' );
+        realStr.insert( std::string::size_type(0), 1, '\"' );
         realStr += '\"';
         addToCurrentNode( realStr );
     }

src/osgViewer/CMakeLists.txt

@@ -213,6 +213,9 @@ ELSE()
                 SET(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:${CMAKE_OSX_SYSROOT}/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib")
             ENDIF()
 
+        ELSE(APPLE)
+
+            SET(LIB_EXTRA_LIBS ${X11_X11_LIB} ${LIB_EXTRA_LIBS})
         ENDIF(APPLE)
     ENDIF()
 ENDIF()