On 20/08/2020 18:07, Vaseeharan Vinayagamoorthy wrote:
> Hi Szabolcs,
>
> In the top level gcc config.log, I see:
>
> configure:5541: checking whether aarch64-none-linux-gnu-g++ supports C++11
> features by default
> configure:5837: aarch64-none-linux-gnu-g++ -c -g -O2 conftest.cpp >&5
> configure:5837: $? = 0
> configure:5844: result: yes
> configure:6542: checking whether g++ supports C++11 features by default
> configure:6845: result: yes
>
> Not sure whether that helps?
>
I suspect this is a host/build confusion issue. Are you sure that's the
compiler used for BUILD?
R.
> Regards
> Vasee
>
>
> On 20/08/2020, 16:26, "Szabolcs Nagy" <szabolcs.n...@arm.com> wrote:
>
> The 08/20/2020 13:59, Vasee Vinayagamoorthy wrote:
> > +# Also require C++11 for building code generation tools.
> > +# Do nothing if "${build}" = "${host}", because in this case
> > +# CXX_FOR_BUILD="\$(CXX)", and $CXX is already set to the correct
> value above.
> > +if test "${build}" != "${host}"; then
> > + saved_CXX=$CXX
> > + saved_CXXCPP=$CXXCPP
> > + CXX=$CXX_FOR_BUILD
> > + CXXCPP=
> > + AX_CXX_COMPILE_STDCXX(11)
> > + CXX="$CXX -std=c++11"
> > + CXX_FOR_BUILD=$CXX
> > + CXX=$saved_CXX
> > + CXXCPP=$saved_CXXCPP
> > +fi
>
> i think AX_CXX_COMPILE_STDCXX(11) should
> set CXX correctly (it seems it would set
> it to "g++ -std=gnu++11" instead of
> "g++ -std=c++11" but either should work)
>
> please look at the top level config.log
> i think you should look for
>
> "checking whether g++ supports C++11 features with -std=gnu++11"
>
> and that check should be successful.
>
