Re: [boost] [PREDEF] Review for the Boost.Predef library by Rene Riviera

Subject: Re: [boost] [PREDEF] Review for the Boost.Predef library by Rene Riviera
From: Dave Abrahams (dave_at_[hidden])
Date: 2012-02-28 15:37:19

on Tue Feb 28 2012, Rene Rivera <grafikrobot-AT-gmail.com> wrote:

> On 2/27/2012 1:20 PM, Dave Abrahams wrote:
>>
>>
>> One thing I don't see is any distinction between the target being
>> compiled for and the host on which the compilation is happening.  You
>> could make an argument that no such distinction is needed, but in the
>> absence of such an argument I suggest changes like
>> BOOST_ARCHITECTURE_XXX =>  BOOST_TARGET_ARCHITECTURE_XXX
>
> I don't think I made such an argument :-) The argument is way simpler
> than that. None of the compilers I'm aware of tell you *directly* what
> host architecture they are running if it happens to be different from
> the target architecture. The best you can do is some user defined
> predef, or something derived from running something like uname.
>
> As for the name.. I'm open to suggestions. But as was mentioned ealier
> the name is rather long already. Which many people already object to.

>
>> Also, when BOOST_TARGET_ARCHITECTURE_XXX is 1, shouldn't we also have
>>
>>        #define BOOST_TARGET_ARCHITECTURE XXX
>>
>> ?
>
> What would the "XXX" be in the define? ..The only option I can see is
> defining a string literal. Which is only useful for informational
> debugging uses. And not the more general decision testing.

Good points.  I don't think I was thinking very clearly :-)

-- 
Dave Abrahams
BoostPro Computing
http://www.boostpro.com