Thanks, Ryan. The system has GCC 9.3.0 installed (Ubuntu 20.04)
which the docs say supports c++17.
pybind11 package manager version for Ubuntu 20.04 used to be 2.5.0. The
package manager has now reverted the standard version
to 2.4.3 (which used to not work). I installed pybind 2.5.0 using the
tarball (link on the wiki for 3.9 OOT porting). That
pybind11 build might not support c++17, perhaps c++14 (based on strings
in the pybind build directory)?
Is some different version of pybind11 needed now for gnuradio 3.10 ?
-- Tom, N5EG
On Fri, Apr 29, 2022 at 9:40 AM Ryan Volz <ryan.volz@gmail.com
<mailto:ryan.volz@gmail.com>> wrote:
Hi Tom,
GR 3.10 increased the CXX standard to c++17. Perhaps your compiler
doesn't recognize -std=c++17, but did allow -std=c++14 with GR 3.9?
My suspicion is that the following line has something to do with it:
https://github.com/gnuradio/gnuradio/blob/main/gr-utils/blocktool/core/parseheader_generic.py#L323
<https://github.com/gnuradio/gnuradio/blob/main/gr-utils/blocktool/core/parseheader_generic.py#L323>
Cheers,
Ryan
On 4/29/22 11:35 AM, Tom McDermott wrote:
> I am trying to port an existing 3.9 OOT to 3.10. After the
conversion
> and edits based on the 3.10 directories,
> the command to gr_modtool bind my_module fails with the error:
>
> Unknown -std=c++xx flag used
>
> I've greped the entire 3.10 project from its root and that string
> is not in any of the project modules except in the
> failed_conversions.txt file in the python bind output directory).
>
> The only place I can see an include pointing outside the OOT
directory
> is in the api.h file in the project include directory:
> #include <gnuradio/attributres.h>
>
> That attributes.h file cannot be found anywhere on my system.
>
> -- Tom, N5EG
>
>
>
>