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Date:      Sun, 03 Feb 2013 15:25:41 +0100
From:      Dimitry Andric <dim@FreeBSD.org>
To:        Andreas Nilsson <andrnils@gmail.com>
Cc:        FreeBSD Stable Mailing List <freebsd-stable@freebsd.org>
Subject:   Re: Ports and WITH_LIBCPLUSPLUS
Message-ID:  <510E7365.3060807@FreeBSD.org>
In-Reply-To: <CAPS9%2BSv3QTTK50=67F82=9jf4T0%2BGa0EoL_Qzh0og=AhEdsAiQ@mail.gmail.com>
References:  <CAPS9%2BSsKqM%2B0Zo71LRxTfUPVOBhUaCTqrXDuHv30e76EH7YWCw@mail.gmail.com> <510E65FA.4040900@FreeBSD.org> <CAPS9%2BSv3QTTK50=67F82=9jf4T0%2BGa0EoL_Qzh0og=AhEdsAiQ@mail.gmail.com>

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On 2013-02-03 14:56, Andreas Nilsson wrote:
> On Sun, Feb 3, 2013 at 2:28 PM, Dimitry Andric <dim@freebsd.org> wrote:
...
>> This is as yet an unsolved problem, as LDFLAGS is the same for both C
>> and C++ link jobs.  I think the easiest way would be to set your CXX
>> variable to:
>>
>> CXX=cc -stdlib=libc++
>>
> Wouldn't CXX=CC -stdlib=libc++ be more appropriate, as cc is for c and CC
> for c++, or have that convention gone away?

Sorry, I should have taken one more cup of coffee. :-)  'CC' is not
really recommended anymore, just use:

CXX=c++ -stdlib=libc++


> My adding them to LDFLAGS comes from
> https://wiki.freebsd.org/NewC++Stackwhere it says "Add -stdlib=libc++
> to your compile and link flags..."

Yes, that advice is just fine, but in some cases you cannot influence
the link flags used only for C++ linking.  In those cases, you will have
to trick the build system into doing so.

In most cases (but probably not all), this can be done by adding the
required flags to ${CXX}.


> It
> actually made a bunch of the qt4- packages build, they wouldn't without it.
>
> I guess a wiki page tracking the failing packages would be good, but I
> couldn't get the hang of creating a page there :(

This would better be done by a normal exp-run procedure, but those are
offline for the time being.



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