Using cxx11 PortGroup on < 10.9

[Mojca Miklavec]

On 25 January 2016 at 20:17, Ryan Schmidt wrote:
> On Jan 24, 2016, at 11:15 PM, Jeremy Huddleston Sequoia wrote:
>
>> What benefit does "cxx.require_global_libc++ no" have over the current approach of just doing:
>>
>>    configure.cxx_stdlib libc++
>>    depends_lib-append port:libcxx
>
> Or I was going to suggest:
>
> PortGroup            cxx11 1.0
> configure.cxx_stdlib libc++
>
> which is what the mongodb port does. The cxx11 1.0 portgroup ensures that compilers that don't do C++11 are blacklisted, which I think just depending on the libcxx port wouldn't do.

My experience is that the second command is not needed because using
"PortGroup cxx11 1.0" fails on < 10.9 anyway (unless libc++ is
default).

Mojca