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Re: Checking C++0X support

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Am 11.04.2011 21:28, schrieb Helmut Jarausch:

>
> Hi,
>
> for some time, some compilers won't support the (full) C++0X standard.
> For an even longer time, software won't require the usage of such a
> compiler, but also don't want to preclude taking advantage of the new
> features if such a compiler is used.
> So, there is need for a portable compile time check for C++0X support.
> Is there something like this?
>

The standard provides a solution for this: As of [cpp.predefined] it define=
s
the predefined macro name

__cplusplus

(with two leading underscores) and describes:

"The name __cplusplus is defined to the value 201103L when compiling a C++
translation unit. (footnote 157)"

where the (non-normative) footnote 157 says:

"It is intended that future versions of this standard will replace the valu=
e
of this macro with a greater value. Non-conforming compilers should use a
value with at most five decimal digits."

This is a recommendation, so some compiler might (do) not follow this
advice, so. But I think, that q.o.i will ensure that serious compiler will
try to conform, if they currently don't do.

HTH & Greetings from Bremen,

Daniel Kr=FCgler



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Checking C++0X support Helmut Jarausch <jarausch@igpm.rwth-aachen.de> - 2011-04-11 13:28 -0600
  Re: Checking C++0X support  Pete Becker <pete@versatilecoding.com> - 2011-04-12 13:09 -0600
  Re: Checking C++0X support  =3D?UTF-8?B?RGFuaWVsIEtyw7xnbGVy?=3D <daniel.kruegler@googlemail.com> - 2011-04-12 13:10 -0600
  Re: Checking C++0X support  CornedBee <wasti.redl@gmx.net> - 2011-04-12 13:11 -0600

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