building from source with libc++

[Mojca Miklavec]

On 2 April 2017 at 21:06, db wrote:
>
>> Usually the
>> biggest problem is C++11 nowadays and libc++ usually helps there, it's
>> just that most developer don't have resources to actually test
>> packages on older boxes.
>
> Re libc++, how would you go about it? Echo requested, uninstall installed, re-install requested?

Basically yes. You could follow point 3 of
    https://trac.macports.org/wiki/Migration
except that between uninstalling installed and reinstalling requested
you need to change macports.conf or rather follow
    https://trac.macports.org/wiki/LibcxxOnOlderSystems

On the other hand, before we start distributing binaries from the
libc++ buildbots you could just as well install another copy of
MacPorts under a different prefix, for example
    /opt/libcxxlocal
or any other folder of your choice and keep two installations active
(just in case that something goes wrong with libc++, you could still
use the package from the other installation).

Mojca