iosfwd problems

I've tried llvm 2.8 and 2.9, but they both have problems with
#include <iosfwd>.

Any pointers to what this might be?

/usr/include/c++/4.5/iosfwd:39:10: fatal error: 'bits/c++config.h'
file not found
#include <bits/c++config.h>

If you have not done so, you have to configure a clang header to find
your default libc++ header files. See #5 at
if this is your issue.


Ah. Those instructions requires modifying the code and I got a segfault when
trying to build clang....