diff -uNr OpenCASCADE6.3.0-old/ros/configure.in OpenCASCADE6.3.0/ros/configure.in
--- OpenCASCADE6.3.0-old/ros/configure.in	2008-10-02 23:27:17.000000000 +0200
+++ OpenCASCADE6.3.0/ros/configure.in	2008-10-02 23:36:00.000000000 +0200
@@ -127,8 +127,8 @@
 def_ios_ok,
 [AC_LANG([C++])
  AC_TRY_COMPILE([#include <stream.h>
-static const int input = (ios::in) | (ios::nocreate);
-static const int output= (ios::out);],
+static const int input = (std::ios::in) | (std::ios::nocreate);
+static const int output= (std::ios::out);],
 [return 0;],
  def_ios_ok=yes, def_ios_ok=no)
 ])
@@ -141,7 +141,7 @@
 ostream_form_ok,
 [AC_LANG([C++])
  AC_TRY_COMPILE([#include <iostream.h>],
-[cout << cout.form("%9.3e", 3.14159627e-4) << endl;
+[std::cout << std::cout.form("%9.3e", 3.14159627e-4) << std::endl;
 return 0;],
  ostream_form_ok=yes, ostream_form_ok=no)
 ])
diff -uNr OpenCASCADE6.3.0-old/ros/inc/Standard_Stream.hxx OpenCASCADE6.3.0/ros/inc/Standard_Stream.hxx
--- OpenCASCADE6.3.0-old/ros/inc/Standard_Stream.hxx	2007-10-09 16:04:46.000000000 +0200
+++ OpenCASCADE6.3.0/ros/inc/Standard_Stream.hxx	2008-10-02 23:36:00.000000000 +0200
@@ -24,26 +24,12 @@
 // Unix variant
 #ifndef WNT
 
-#ifdef HAVE_IOSTREAM
   #include <iostream>
   #define USE_STL_STREAM
-#elif defined (HAVE_IOSTREAM_H)
-  #include <iostream.h>
-#else
-  #error "check config.h file or compilation options: either HAVE_IOSTREAM or HAVE_IOSTREAM_H should be defined"
-#endif
 
-#ifdef HAVE_IOMANIP
   #include <iomanip>
-#elif defined (HAVE_IOMANIP_H)
-  #include <iomanip.h>
-#endif
 
-#ifdef HAVE_FSTREAM
   #include <fstream>
-#elif defined (HAVE_FSTREAM_H)
-  #include <fstream.h>
-#endif
 
 // Windows variant
 #else /* WNT */
diff -uNr OpenCASCADE6.3.0-old/ros/inc/Standard_values.h OpenCASCADE6.3.0/ros/inc/Standard_values.h
--- OpenCASCADE6.3.0-old/ros/inc/Standard_values.h	2005-04-21 16:32:46.000000000 +0200
+++ OpenCASCADE6.3.0/ros/inc/Standard_values.h	2008-10-02 23:36:00.000000000 +0200
@@ -23,17 +23,7 @@
 #endif
 
 #ifndef WNT
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#ifdef HAVE_LIMITS
-# include <limits>
-#elif defined (HAVE_LIMITS_H)
 # include <limits.h>
-#else
-#error "check config.h file or compilation options: either HAVE_LIMITS or HAVE_LIMITS_H should be defined"
-#endif
 #endif