Re: [Discuss-gnuradio] GNURadio/Module builds and std=C++11

I'm seeing gr-osmosdr fail with freesrp support here on 16.04. Is there
another OOT that fails?

Ron

On 06/20/2017 09:25 AM, Ghost Op wrote:
> Hi everyone,
>
> I've run into this on every Ubuntu 16.04 box I've installed gnuradio
> and OOT modules on and Google doesn't seem to have a nice clean answer
> (the search answer is always add a compile flag) so I figured I'd ask
> the group.
>
> When I build modules (gr-osmosdr in particular with libfreesrp support
> I run into this) on a fresh Ubuntu 16.04.2 LTS install, I run into a
> warning like this: "warning: non-static data member initializers only
> available with -std=c++11 or -std=gnu++11". Depending on the code it
> may produce errors on some lines preventing compilation.
>
> I know what causes it, the compiler is defaulting to something earlier
> than the c++11 standard (like C++99) with the Ubuntu repo gcc version
> (5.4) installed, so some of the syntax in the code is causing the
> warning. I can modify the CMake and add this to it "set
> (CMAKE_CXX_STANDARD 11)" and it builds after that, but my guess is
> that this builds on everyone else's Ubuntu without these modifications
> or the setting would be standard in the CMake files. What I'd really
> like to do is tell the compiler to default to -std=C++11 even if it's
> not explicitly provided as a compile flag, but again if everyone were
> running into it I think it would have been fixed another way.
>
> If I do the same build on a standard debian build with gcc 6.3 it
> builds clean so it's definitely a default standard issue for compilers
> on Ubuntu 16.04.
>
> Does anyone have any insight/suggestions?
>
> Thanks!
>
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