QA script error (libc++)

[Fernando Apesteguía]

On Fri, Jun 24, 2016 at 10:25 AM, Fernando Herrero Carrón
<elferdo at gmail.com> wrote:
>
> El 24 jun. 2016 8:16 a. m., "Fernando Apesteguía"
> <fernando.apesteguia at gmail.com> escribió:
>>
>> One of my ports is written in C++. It links agains libc++ that is in
>> base (/usr/src/contrib/libc++). The port still builds fine and works
>> but the QA scripts show an error complaining about the executable
>> being linked to libc++ without the library being listed as an actual
>> dependency and it suggests to add the following line to the Makefile:
>>
>> LIB_DEPENDS+=libc++.so:devel/libc++
>>
>> Is this strictly necessary? Would something like this be acceptable?:
>>
>> .if !exists(/usr/lib/libc++.so)
>> ...
>> LIB_DEPENDS+=libc++.so:devel/libc++
>> ...
>> .endif
>>
>> Note: the port does not compile on FreeBSD < 10.x
>>
>> Thanks in advance.
>
> Dear Fernando,
>
> I would say adding a dependency on libc++ from ports is not necessary. On a
> standard system you can pass the compiler an option like -stdlib=libc++ and
> it works.
>
> This library is usually linked against when compiling with c++11 or newer.
> Maybe adding the appropriate compiler option [1] would be a better choice?

I forgot to mention I'm already using this:

USES= compiler:gcc-c++11-lib

But the QA script still complains.

>
> Cheers,
> Fernando
>
> [1] https://www.freebsd.org/doc/en/books/porters-handbook/uses-compiler.html