Well, the version 4.4.3 of gcc on my system seems to support it. One way to see when it's available would be to look up gcc's documentation in the changelog for the 4.4.x series.... I took a quick look at gnu's web site and found this: <a href="http://gcc.gnu.org/projects/cxx0x.html">http://gcc.gnu.org/projects/cxx0x.html</a> (looks like a little of the C++0x is available as early as 4.3) kr René sent from my phone <div class="gmail_quote">On Nov 25, 2010 9:26 PM, "Caolán McNamara" <<a href="mailto:caolanm@redhat.com">caolanm@redhat.com</a>> wrote: </div>