Bryce Lelbach wrote:
On Linux, both clang and icc use GNU's C++ standard library by default. As of version 4.5 of GNU's stdlib, a new implementation of the <iomanip> header has been added, which makes use of C++0x features which only GCC supports (the latest versions of clang, e.g. a very recent nightly build, might work; intel certainly won't). The refactored <iomanip> header in GNU's stdlib does not detect C++0x support and fallback on the old C++98 friendly code, which unfortunately leaves clang-linux and intel-linux users in a bit of a bind. In particular, this plagues clang users on Linux as clang will use the latest available version of the GNU stdlib by default, meaning most users cannot have both gcc-4.5 and clang installed without problems.
I have implemented the <iomanip> header in <boost/detail/iomanip.hpp>, under the boost::detail namespace (to avoid conflicts with system <iomanip> headers that users/other code might include).
Is this something that we really need to address? This problem has much wider scope than just Boost, and is of a temporary nature.