[boost] [config] <iosfwd> and g++ 2.95

From: Daniel James (daniel_at_[hidden])
Date: 2005-10-15 10:00:09

select_stdlib_config.hpp has just been changed to include <iosfwd> 
instead of <utility>. But g++ 2.95's standard library has its own 
iostreams implementation which doesn't define __STL_CONFIG_H. It does 
define __IOSFWD__, so maybe that could be checked for as well?

Is it okay to commit the attached patch? I've changed sgi.hpp to go back 
to including <utility> if __STL_CONFIG_H isn't defined so that anything 
that checks for _STL_CONFIG_H will still work. Also, if __IOSFWD__ 
happens to be used in another library, it will fail to compile.

Daniel