[cmake-developers] C++11 and target_compiler_feature proposal

[Stephen Kelly]

Brad King wrote:

> On 10/11/2013 10:56 AM, Stephen Kelly wrote:
>> I assume so. The only flag I'm aware of for XL is -qlanglvl=extended0x,
>> and that is equivalent to -std=c++11 afaik. What are you referring to
>> specifically?
> 
> I was just touching back on the issue you originally raised about
> -qlanglvl=extended0x.

Oh, I see. You're referring to a comment in the branch which I also pasted 
here:

 http://thread.gmane.org/gmane.comp.programming.tools.cmake.devel/8115/focus=8126

The problem would only occur if the alternative in that comment was the way 
forward.

I believe the XL case fits into the currently-discussed form of the feature 
well.

> 
>> I'm in favor of sticking close to the defaults of the compiler. The user
>> shouldn't have to tell CMake to use the extension if that is the default
>> for the compiler anyway, just as a penalty for telling CMake about
>> requiring variadic templates.
> 
> If it is a cross-platform project then it should not depend on
> a non-standard language feature without saying so.  Once a
> project starts using the target_compiler_feature command then
> it should be aware of the implications.

Ok, good point.

Thanks,

Steve.