Re: issues porting C++ OOT to 3.9 - fails at runtime import

[Ron Economos]

Here's a very simple OOT with just one block.

https://github.com/drmpeg/gr-iqlevels

Ron

On 5/8/21 15:26, Tom McDermott wrote:
> I am continuing to have issues porting my 3.8 code over to 3.9.   
> (Ubuntu 20.04)
> By request I've posted the code on github:
>
> https://github.com/Tom-McDermott/gr-hpsdr branch: gr_3.9_broken
>
> I know it is asking a lot to look over someone's code.
>
> Alternatively, is there a simple C++ OOT on 3.9 that has the source code
> tree available?  Something like  how_to_square that can be built,  
> builds, installs,
> and runs correctly?  This would allow testing to see if the 
> environment, tooling,
> etc. is working correctly on that known-good OOT.
>
> My source code cmakes, makes, installs OK.. GRC can instantiate the 
> module OK graphically.
> But it fails at runtime due to gr::block not being found. Josh looked 
> over one or two
> snippets of code which seem correct.  I've poured over the build 
> files, 'readelf' and 'nm' the .SO file, etc,
> but do not know how the python inheritance gets inserted.
>
> A couple of observations:
>
> 1. bind fails on certain valid path names.  I copied my entire OOT 
> repository to another directory
> and Ubuntu created a copy with the ASCII (copy) in the directory 
> name.   Having the ASCII
> characters  ' (copy)' embedded within the directory name causes bind 
> to throw an error pointing
> at that first parenthesis. Changing the directory name to not have the 
> parenthesis characters fixes that.
>
> 2. When I open python3 from the command line and import hpsdr, I get 
> the same error
>  as when trying to run the flowgraph from GRC:
>
> $ python3
> Python 3.8.5 (default, Jan 27 2021, 15:41:15)
> [GCC 9.3.0] on linux
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import gnuradio
> >>> import hpsdr
> An exception of type ImportError occurred. Arguments:
> ('generic_type: type "hermesNB" referenced unknown base type 
> "gr::block"',)
> > /usr/lib/python3/dist-packages/hpsdr/__init__.py(19)<module>()
> -> from .hpsdr_python import *
>
> Any help would be much appreciated.
>
> -- Tom, N5EG