Re: 'to_string' is not a member of 'std'

[Jason Bacon <bacon4000%gmail.com@localhost>]

On 10/10/17 07:42, Edgar Fuß wrote:
> I'm trying to buld 2017Q3 (which I consider supported) on NetBSD-6.1 (which I
> consider supported). However, building secutity/gpgme fails with
> 	error: 'to_string' is not a member of 'std'
>
> Changing it's USE_LANGUAGES from c++ to c++11 makes the configure phase fail
> because it tries to run /lib/cpp.
>
> So I built lang/gcc48. However, compiling a simple
> 	#include <string>
>
> 	int main()
> 	{
> 		std::to_string(0);
> 		return 0;
> 	}
> with /usr/pkg/gcc48/bin/cc -std=c++11 gives the same error. Same with
> lang/gcc49 and lang/gcc5.
> On a NetBSD-7 machine (which also has gcc 4.8.5), it works!
>
> I must be doing something stupidly wrong, no?

I've hit this a few times in FreeBSD ports.  For what it's worth, this 
is the workaround I used:

CXXFLAGS+=    -D_GLIBCXX_USE_C99 -D_GLIBCXX_USE_C99_MATH 
-D_GLIBCXX_USE_C99_MATH_TR1

Ref:

http://stackoverflow.com/questions/26832199/getting-gcc-in-c11-mode-to-work-on-freebsd

It might at least help you understand the problem...

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