This is a question for Csound developers in general, and for OS X
developers in particular.

As you know we now have several different threading libraries at work
in the Csound universe (including CsoundQt). As you probably also
know, the official ISO standard for the C++ programming language now
specifies a reasonably complete set of threading primitives. These are
well designed. They seem to be implemented in GCC from version 4.4 on.

I am not proposing to change any existing code at this point, but I am
going to put some threading into the CsoundAC library. I can use
pthreads, OpenMP, or the standard C++ library threads. I would prefer
to use the standard C++ library threads, but I won't do this unless
the standard C++ build on all platforms uses a version of GCC that has
the builtin threads.

So, my question for Csound developers is: Can we agree that our
compilers will support c++11 threading?

Doing this will require (a) using GCC 44 or later and (b) adding
"-std=c++0x" to all C++ compiler command lines for CsoundAC and other
targets that use these features.

Regards,
Mike

-- 
Michael Gogins
Irreducible Productions
http://www.michael-gogins.com
Michael dot Gogins at gmail dot com

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I think the latest gcc provided by Apple on OSX 10.6/10.7 is 4.2. To use 4.4 we would need to start build gcc ourselves. I am not sure I want to go there.
Besides, other people building Csound will want to use the supplied tools, rather than having to build them.

Victor

On 2 Feb 2012, at 18:03, Michael Gogins wrote:

> This is a question for Csound developers in general, and for OS X
> developers in particular.
> 
> As you know we now have several different threading libraries at work
> in the Csound universe (including CsoundQt). As you probably also
> know, the official ISO standard for the C++ programming language now
> specifies a reasonably complete set of threading primitives. These are
> well designed. They seem to be implemented in GCC from version 4.4 on.
> 
> I am not proposing to change any existing code at this point, but I am
> going to put some threading into the CsoundAC library. I can use
> pthreads, OpenMP, or the standard C++ library threads. I would prefer
> to use the standard C++ library threads, but I won't do this unless
> the standard C++ build on all platforms uses a version of GCC that has
> the builtin threads.
> 
> So, my question for Csound developers is: Can we agree that our
> compilers will support c++11 threading?
> 
> Doing this will require (a) using GCC 44 or later and (b) adding
> "-std=c++0x" to all C++ compiler command lines for CsoundAC and other
> targets that use these features.
> 
> Regards,
> Mike
> 
> -- 
> Michael Gogins
> Irreducible Productions
> http://www.michael-gogins.com
> Michael dot Gogins at gmail dot com
> 
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Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie




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OK, thanks for the information. I will not do anything requiring the
Csound build to use GCC 4.4 or later. Either I will localize my
changes in my own projects outside Csound, or I will use threading
facilities already in the existing build.

Regards,
Mike

On Mon, Feb 20, 2012 at 2:14 PM, Iain Duncan  wrote:
> On Mon, Feb 20, 2012 at 10:12 AM, Victor Lazzarini
>  wrote:
>>
>> I think the latest gcc provided by Apple on OSX 10.6/10.7 is 4.2. To use
>> 4.4 we would need to start build gcc ourselves. I am not sure I want to go
>> there.
>> Besides, other people building Csound will want to use the supplied tools,
>> rather than having to build them.
>>
>
> Yeah, my GCC on OS X 10.6.7 is 4.2.1, and I think came when I installed the
> xcode stuff.  I agree with Victor that requiring people to use something
> other than what comes with the Xcode package on os x is likely to
> deter/frustrate some builders on os x. I sure like the principle of the
> proposal, but have to say that setting up the latest tools on os x is a lot
> more difficult than on linux, for what's that worth. :-/
>
> Iain
>
>
>
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-- 
Michael Gogins
Irreducible Productions
http://www.michael-gogins.com
Michael dot Gogins at gmail dot com

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