Hi Ken, On 14/09/2017, at 2:43 PM, Ken Cunningham wrote: > Keeping a 10.7 machine going is always going to be more of a project than a > new machine, but not necessarily hopeless. Upgrading to a Sierra machine is > always the path of least resistance, if that is in your horizon. Nonetheless, > there is _usually_ a way to keep your 10.7 machine running with _most_ open > source software. No guarantees, though. > > For the simplest fix that requires the least amount of locally-built software > and the least amount of time, do this: > > when you see a port that tells you something like: > > Error: akonadi does not support your selected MacPorts C++ runtime. libc++ > must be selected and C++-based ports built against it. > > you can try the following: > > edit `port file akonadi` in your favourite editor, like vi or bbedit. You > might need sudo. > > change the following line, usually near the top: > > PortGroup cxx11 1.0 > > to > > PortGroup cxx11 1.1 > > and then hope the Gods are smiling on you. I would say there is about a 98% > chance it will "just work". If it does not work, then the next option is a > wholesale change to libc++, which I did in the end, and I think that works > the best. But there is currently no libc++ buildbot, so you'll have to build > *everything*. That will take several days (and is also not guaranteed to > work).
FWIW, that did not work for me. It caused some new tools to be installed, such as gcc6, after I had done "port clean akonadi" and "port install akonadi", then this time the error message was: :info:build Undefined symbols for architecture x86_64: :info:build "std::runtime_error::runtime_error(char const*)", referenced from: :info:build boost::function1<void, std::string const&>::operator()(std::string const&) const in libakonadi_shared.a(akapplication.cpp.o) :info:build ld: symbol(s) not found for architecture x86_64 :info:build clang: error: linker command failed with exit code 1 (use -v to see invocation) :info:build make[2]: *** [bin/akonadi_agent_server] Error 1 but I do not understand it, not being familiar with boost etc. As you can see from another email, I am trying Sierra on a new machine, and that has a problem, but I still have my old machine on 10.7 Lion. Cheers, Ian W.
