http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53838
--- Comment #4 from Akim Demaille <akim.demaille at gmail dot com> 2012-07-19 13:16:23 UTC --- Hi People, I have therefore reported this to MacPorts, see http://trac.macports.org/ticket/35070 . The outcome is that (i) with --enable-fully-dynamic-string fails to build on MacPorts, and (ii), no, the linking is properly done with the MacPorts' version of stdlibc++: > also when trying your example the resuling binary is linked to _our_ gcc's > C++-lib So really, there seem to be something weird about this on OS X, as indeed is shown in other tickets. What course of action would you recommend?