Changed the macro usage so that the quotes are now added inside the .cpp

CMakeLists.txt

@@ -534,7 +534,7 @@ ENDIF(DYNAMIC_OPENSCENEGRAPH)
 
 # Add a default plugin search path component
 IF   (DYNAMIC_OPENSCENEGRAPH)
-  ADD_DEFINITIONS(-DOSG_DEFAULT_LIBRARY_PATH="${CMAKE_INSTALL_PREFIX}/lib${LIB_POSTFIX}/${OSG_PLUGINS}")
+  ADD_DEFINITIONS(-DOSG_DEFAULT_LIBRARY_PATH=${CMAKE_INSTALL_PREFIX}/lib${LIB_POSTFIX}/${OSG_PLUGINS})
 ENDIF(DYNAMIC_OPENSCENEGRAPH)
 
 INCLUDE(OsgMacroUtils)

include/osg/Object

@@ -25,6 +25,9 @@ namespace osg {
 // forward declare
 class State;
 
+#define _ADDQUOTES(def) #def
+#define ADDQUOTES(def) _ADDQUOTES(def)
+
 /** META_Object macro define the standard clone, isSameKindAs and className methods.
   * Use when subclassing from Object to make it more convenient to define 
   * the standard pure virtual clone, isSameKindAs and className methods 

src/osgDB/FileUtils.cpp

@@ -367,8 +367,9 @@ std::string osgDB::findFileInDirectory(const std::string& fileName,const std::st
 static void appendInstallationLibraryFilePaths(osgDB::FilePathList& filepath)
 {
 #ifdef OSG_DEFAULT_LIBRARY_PATH
+
     // Append the install prefix path to the library search path if configured
-    filepath.push_back(OSG_DEFAULT_LIBRARY_PATH);
+    filepath.push_back(ADDQUOTES(OSG_DEFAULT_LIBRARY_PATH));
 #endif
 }