Recompile it is, then -- thankyou very much for pointing that out for me, you've saved me countless hours of pain! :) On 18 April 2011 18:32, Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote: > On 18 April 2011 17:29, doug livesey wrote: >> Ah, no I didn't. Do you think I should recompile & reinstall with that enabled? > > Yes, I think that's necessary. You'll also want to rebuild Boost with > the new compiler. > >> Also, are you able to tell me where how the system libraries are >> compiled for Snow Leopard is documented, if they are? > > No, sorry, I only know about this particular issue as it's a fairly > common gotcha: > http://newartisans.com/2009/10/a-c-gotcha-on-snow-leopard/ > https://trac.macports.org/ticket/22234 > > You could use 'g++ -v' on the default system compiler shipped with > Xcode, but I don't know if that will show everything relevant. Changes > such as enabling fully dynamic std::string might be made by changing > the libstdc++ sources rather than via options to configure. >