Question about compiler blacklisting (llvm-gcc for wxWidgets)

Joshua Root jmr at
Thu Nov 2 19:08:29 UTC 2017

On 2017-11-3 05:39 , Ryan Schmidt wrote:
> On Nov 2, 2017, at 13:00, Joshua Root wrote:
>> The reason for the ABI incompatibilities is, AIUI, that before C++11 the
>> C++ standard did not specify an ABI. So theoretically mixing libc++ and
>> libstdc++ works just as well whether you are on Linux or macOS -- that
>> is to say, if everything is a new enough version to be C++11 compliant
>> and you use it in that mode, it should work.
>> If, OTOH, you try any mix involving a pre-C++11 stdlib (like the system
>> libstdc++ on macOS), it won't work.
> So what do you think about what the cxx11-1.1 portgroup is doing?

Which part? If you mean using the old ABI, I guess it makes some sense
to maintain compatibility with the system libstdc++ on those platforms
where it is the default. Not sure how many ports use C++11 but link with
system libs that use C++, or with other ports that use C++ < 11.

- Josh

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