Re: Issue 5368: Reduce allocations in Grob dimension caching (issue 359770043 by address@hidden)

[Hans Åberg]

> On 7 Jul 2018, at 22:02, Werner LEMBERG <address@hidden> wrote:
> 
>> It took long time to get C++11 right, so it is best to avoid older
>> compilers I think.
> 
> I disagree.  The proper way is to test various C++11 features to check
> whether a compiler really supports this standard.  The macro
> AX_CXX_COMPILE_STDCXX does such checks, BTW.

Full C++11 support was first in GCC 4.8.1, see:
  https://gcc.gnu.org/projects/cxx-status.html

Otherwise, just set the flag -std=c++11, before support, it was -std=c++0x.