On Tue, Dec 16, 2008 at 9:48 PM, David Abrahams <dave@boostpro.com> wrote:
on Tue Dec 16 2008, Juergen Hunold <juergen.hunold-AT-ivembh.de> wrote:
Hi John !
On Tuesday 16 December 2008, John Maddock wrote:
Folks, Dave A. asked for a config macro to detect the presence of std conforming <unordered_set> and <unordered_map>.
This would be great.
However, I've run into an unexpected issue: it appears that with gcc-4.3.x you cannot include both <unordered_set> and <ext/hash_set> as attempting to do so leads to endless errors inside the <ext/*> headers :-(
Including either one of the headers is just fine though.
But the <unordered_*> headers are only available with -std=c++0x.
Huh, good point. Too bad you have to set a compiler flag for that one.
I think that they are also available with stdc++ TR1 implementation, which IIRC doesn't require to be enabled via compiler flags. HTH, -- gpd