Re: building OOT module in conda

[Ryan Volz]

Hi Wayne,

You shouldn't need specifically gnuradio=3.8.2 for gr-lora_sdr (despite what their README says), and that fails because there was no gnuradio-build-deps package at the time of that release. Try it with gnuradio=3.8 instead.

You do need gnuradio-build-deps installed into your "gnuradio" environment and not "base" (exception: you've installed gnuradio into "base" and just want to just that, which I generally don't recommend).

The necessary compiler package is installed by gnuradio-build-deps, so no need to install cxx-compiler.

Finally, yes, run CMake on the OOT with the "gnuradio" environment active so that it has everything it needs.

Cheers,
Ryan

On March 10, 2022 11:38:22 PM EST, Wayne Roberts <wroberts92780@gmail.com> wrote:

  is it possible (since the OOT needs 3.82 of gnuradio), your step 2:
    conda create -n gnuradio gnuradio=3.8.2 gnuradio-build-deps
that results in conflicts

It looks like gnuradio is installed via conda with environment gnuradio activated.

But its not clear if gnuradio-build-deps needs also be installed with the active environment set to gnuradio vs base. 

Also cxx-compiler installed in which environment. 

And then finally, running cmake on the OOT module in the same environment.

On Thu, Mar 10, 2022 at 3:13 PM Ryan Volz <ryan.volz@gmail.com> wrote:

Hi Wayne,

On 3/10/22 5:21 PM, Wayne Roberts wrote:
> when i say that gnuradio works on windows, that doesnt include UHD.
> When i plug in B100, and point windows 11 device management to the unzipped erllc_uhd_winusb_driver.zip, it just ignores the contents.
> But run it ok in ubuntu now.

Getting the USB driver installed for any device is always going to be an external step that no GNU Radio package can help with, but if the UHD documentation is not getting you there then I recommend giving the generic WinUSB driver a try as documented here:

https://github.com/ryanvolz/radioconda#windows-users-5

>
> The OOT module i build and run is https://github.com/tapparelj/gr-lora_sdr <https://github.com/tapparelj/gr-lora_sdr>
> It is for 3.8.2, so i must install that version of gnuradio, and on ubuntu hold back the update on package management.

Ah, GR 3.8 might be a little trickier since the Wiki documentation has been updated to correspond to 3.9/3.10. That said, nothing about that OOT looks like it would necessarily make the process more difficult.

>
> On windows though, with conda,  for building that I have the VS2015 installed and cmake finds that, but cmake stops at finding MPLIB (or MPIR) on windows.

VS2017 might be necessary, or at least have the "MSVC v141 - VS2017 C++ x64/x86 build tools (v14.16)" component selected for inclusion in your Visual Studio installation.

> Also note that in conda, cmake and git are not installed by default.  I'm not sure if base should be activated when installing cmake and git.

Something seems off here since `mpir` and `cmake` should both be installed in an environment where `gnuradio-build-deps` and `gnuradio-core` are installed. `git` is not required for the build, only for how you're getting the source, so it would be necessary for you to install the `git` package manually.

Let me be explicit about how I think this should work:

1) Start from an activated base conda environment:

     conda activate base

2) Create a new environment, say "gnuradio", that contains `gnuradio` and, since you want to build an OOT, `gnuradio-build-deps`.

     conda create -n gnuradio gnuradio gnuradio-build-deps

3) Activate your "gnuradio" environment.

     conda activate gnuradio

4) Install any extra dependencies you might need for your OOT (for gr-lora_sdr it looks like that would be nothing).

     conda install ...

*) At this point, you should be in an environment where `mpir` and `cmake` are installed.

     conda list

(output includes `mpir` and `cmake`)

5) Execute CMake and the build steps as described on the wiki.

If you're doing all of that and it's still failing, post the CMake output and `conda list` from the environment that is active when you're doing the build.

Cheers,
Ryan