[Bf-committers] C++11 Audaspace

[Jörg Müller]

Hi,

so it is mostly a problem for Linux, not for Windows and Mac?

Regarding compilation we could build only audaspace in C++11 mode?

We can also do 1 and 2, so you can then choose between 3 options 
(including old audaspace for Linux builds).

I meant 2.78, not 2.48, sorry.

Regards

On 2015-04-15, 00:30 Sergey Sharybin wrote:
> Hi,
>
> That'd be a good idea to cover benefits which can be measured by artists ;)
> Are there gonna to be loads of bugfixes, new features?
>
> As for C++11 in general, there are several technical issues:
>
> - It'll piss off majority of the render farms and some studios which are
> using Blender and which for one or another reason are using operation
> systems like CentOS or even RHEL. We can't just ignore this fact when
> making decision in here.
>
> - While majority of Blender is happy about C++11 it is still not fully
> ready for this. For example you need latest versions of OIIO and OSL (which
> are not released yet) in order to make compilation process smooth and
> successful.
>
> - If you're using any C++11 subset which requires gcc-4.8 then you'll 100%
> need to hold on such a change for until official Linux release environment
> gets upgraded. Currently it uses gcc-4.7 and updating to newer gcc is real
> PITA because it implies using newer libc, which also implies bumping
> minimal system requirement for the official Linux builds.
>
> For packaging i wouldn't rely on it because not everyone is living on the
> bleeding edge with RR Linux distros. To be honest, being accepted for Arch
> does not convince me, i'll be more convinced once the library is accepted
> into Debian (if it's be accepted into CentOS/RHEL i'll also be pretty much
> convinced :). For until then sticking to an in-source lib is better idea.
>
> --------
>
> Answering your request for comments:
>
> - If the library is more or less same size think 2) is better (less
> intrusive at least) way to go. Additionally to that, you can also have
> WITH_SYSTEM_AUDASPACE (same as we do with some other libraries).
> - Not totally clear what exact version you meant instead 2.48, but there
> are technical issues which needs to be addressed first.
>
>
> On Wed, Apr 15, 2015 at 2:39 AM, Jörg Müller <nexyon at gmail.com> wrote:
>
>> Hi all,
>>
>> the C++11 version of audaspace (Blender's audio library) [1] is ready to
>> be used in Blender. The library is in a ready to release state and I
>> have successfully built and used it on Windows, Mac and Linux. Idealy I
>> would like to have it in the release of Blender 2.76. To integrate it
>> back into the Blender source tree there are two possible solutions:
>>
>> 1. we have it as an dependency like most other libraries. This means
>> that the prebuilt library is in the lib svn folder [2] for Windows and
>> Mac. Linux developers would need to have it installed. There is a
>> package [3] for Arch linux already for example, creating packages for
>> other distributions shouldn't be too difficult.
>>
>> 2. we build it as part of our build system and put the source code in
>> the extern folder like other libraries such as bullet or libmv. The
>> current version is in the intern folder.
>>
>> I have a patch that implements solution 1 for Linux so far and it keeps
>> the old version in intern and adds an option to cmake with which you can
>> switch between old and new audaspace.
>>
>> To build the library a compiler with full C++11 compatibility is needed,
>> that means clang starting with version 3.3 (lower might be enough for
>> audaspace), gcc 4.8 and msvc 2013. Mingw doesn't work as they don't
>> support std::thread yet for example.
>>
>> I am now asking for comments and suggestions and especially whether the
>> first or second option are prefered. The plan would be to implement and
>> test this then until 2.48 is released and merge it to master as soon as
>> master is open after the 2.48 release.
>>
>> Regards,
>> Jörg
>>
>> [1] https://github.com/neXyon/audaspace
>> [2] https://svn.blender.org/svnroot/bf-blender/trunk/lib/
>> [3] https://aur.archlinux.org/packages/audaspace-git/
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>
>