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Re: Adding c++11 support to USE_LANGUAGES
Hi,
From: Ryo ONODERA <ryo_on%yk.rim.or.jp@localhost>, Date: 2017年5月01日 16:48:16 +0900 (JST)
> Hi,
>
> From: Jonathan Perkin <jperkin%joyent.com@localhost>, Date: Mon, 1 May 2017 08:10:37 +0100
>
>> * On 2017年04月28日 at 11:05 BST, Jonathan Perkin wrote:
>>
>>> * On 2017年04月24日 at 13:50 BST, Joerg Sonnenberger wrote:
>>>
>>> > On Mon, Apr 24, 2017 at 02:07:17PM +0200, Edgar Fuß wrote:
>>> > > Is C++n a superset of C++m for n>m?
>>> >
>>> > Mostly. There are a couple of things that explicitly create problems for
>>> > m == 2003 and there is the problem of at least one semantic change that
>>> > can potentially result in miscompiled code (destructors are tagged as
>>> > not throwing by default in 2011). For m>=2011 it should be transparent.
>>>
>>> In that case what about something like this:
>>>
>>> https://github.com/joyent/pkgsrc/commit/e33dc10357d54315a5152ccd9895dde5e1d0f256
>>>
>>> tl;dr: introduce CXX_REQD as a similar mechanism to GCC_REQD, packages
>>> append to it what they need, then we distil it to the most recent
>>> version and use that for the build.
>>
>> Joerg suggested rolling this into USE_LANGUAGES instead. I've done
>> that here and kicked off a bulk build:
>>
>> https://github.com/joyent/pkgsrc/commit/f5841e6549988e345b4a3c5aad7f11d7906f1ea6
>>
>> One of the issues I've realised is that neither this nor the CXX_REQD
>> patch will work in bl3 files if compiler.mk has already been read.
>>
>> I'm not sure there's a great solution for that, so at least
>> integrating this into USE_LANGUAGES should get us existing pkglint
>> warnings about setting it after compiler.mk.
>>
>> Please help testing on NetBSD, especially with problematic packages
>> like libreoffice, I don't yet have a fast NetBSD VM to test in.
>
> I will test this change for mk/compiler.mk for misc/libreoffice
> and www/firefox on NetBSD.
With
CXX_REQD+=gnu++11
, misc/libreoffice builds fine on netbsd-7/amd64 and NetBSD/amd64-current.
> Thank you.
>
>> --
>> Jonathan Perkin - Joyent, Inc. - www.joyent.com
>
> --
> Ryo ONODERA // ryo_on%yk.rim.or.jp@localhost
> PGP fingerprint = 82A2 DC91 76E0 A10A 8ABB FD1B F404 27FA C7D1 15F3
--
Ryo ONODERA // ryo_on%yk.rim.or.jp@localhost
PGP fingerprint = 82A2 DC91 76E0 A10A 8ABB FD1B F404 27FA C7D1 15F3
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