Hi, I also have run into similar issues (errors about invalid forward declarations of fstream) when compiling osgDB on Mac OS X Xcode.
I have identified the cause and two actions to take to fix the problem. The cause is that osgDB includes a header <osgDB/fstream> which is being picked up the #include <fstream> preprocessor line. The reason why this is occuring is that by default Xcode builds a headermap of all headers used in the project, and the local version of fstream is being used instead of the C++ standard library version. The fix is to add two build settings at the root of the OSG project: Code: HEADERMAP_INCLUDES_FLAT_ENTRIES_FOR_TARGET_BEING_BUILT = NO ALWAYS_SEARCH_USER_PATHS = NO Hope this helps. Regards, Phil ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=38318#38318 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org