Re: firefox fails to build on netbsd-8 amd64

[Greg Troxel <gdt%lexort.com@localhost>]

Joerg Sonnenberger <joerg%bec.de@localhost> writes:

> On Mon, Mar 30, 2020 at 06:08:51PM -0400, Greg Troxel wrote:
>> Joerg Sonnenberger <joerg%bec.de@localhost> writes:
>> 
>> > On Fri, Mar 27, 2020 at 08:37:30PM -0400, Greg Troxel wrote:
>> >> [style 0.0.1] /tmp/work/www/firefox/work/build/dist/include/mozilla/UniquePtr.h:223:39: error: no member named 'is_reference_v' in namespace 'std'
>> >
>> > This would be a C++17 addition. It is
>> >     template <class T> inline constexpr bool is_lvalue_reference_v
>> >         = is_lvalue_reference<T>::value;
>> 
>> Thanks for looking at this.
>> 
>> So:
>> 
>>   firefox needs a C++17 compiler
>>   it needs patches to pass --std=c++17?
>> 
>> I tried with gcc7 and it still did not build.
>> But maybe I need to build some prereqs with C++17 also?
>
> It certainly needs a STL implementation that provides C++17, which the
> GCC in netbsd 8 likely doesn't.

So does that mean it needs GCC_REQD?  I don't see any set.  Is gcc 7
good enough?  Does this need some variable to force the runtime from
that compiler?

(Taking the view that firefox needs to work on netbsd8...)