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Re: [Discuss-gnuradio] installing gr-ettus

From: Ben Lapointe
Subject: Re: [Discuss-gnuradio] installing gr-ettus
Date: Fri, 13 Mar 2015 15:08:17 -0400

I am not using the SDK.  The steps I have taken so far: 
Created a new SD card from the dizzy dev image found at [1].
Followed the steps at [2] to clone the RFNoC git repository, switch to rfnoc-devel branch, build it, install it to /opt/uhd
My next challenge was to install the gr-ettus OOT module to be able to use the RFNoC blocks in GRC.
The dizzy image already had a previous install of UHD and GNU RADIO.  For RFNoC I installed a new UHD with the RFNoC branch.  I was hoping to add gr-ettus to the existing GNU RADIO install, to simplify things. 
I am doing all of this on the E310.  Is this the right way to do it?  I assumed that I didn't need the SDK because I already had an SD image built.

On Fri, Mar 13, 2015 at 2:12 PM, Martin Braun <address@hidden> wrote:

you *must* use the right branch of UHD (which I know you've been using). For cross-compiling, you need to make sure that *all* the CMake vars starting with UHD_ are correctly set.

Are you using our SDK? If yes, it's probably pointing to the SDK's default UHD.


On 13.03.2015 10:55, Ben Lapointe wrote:
I'm trying to install gr-ettus on an E310.
I previously installed a new version of UHD (to support RFNoC) in the
directory /opt/uhd
I would like to install gr-ettus into the existing version of gnuradio
that is installed.

Inside the build directory of gr-ettus, when I type "cmake ../" I get
the following message and error:
-- Found UHD: /usr/lib/libuhd.so
CMake Error at CMakeLists.txt:108 (message):
RFNoC not found.

When I had installed UHD, I followed the steps in [1], and made sure
that the new libuhd.so was in my LD_LIBRARY_PATH and I added the new
path to /etc/ld.so.conf; however, when I ran ldconfig I got the
following error:
ldconfig: /usr/lib/libstdc++.so.6.0.20-gdb.py <http://so.6.0.20-gdb.py>
is not an ELF file - it has the wrong magic bytes at the start.
I had ignored that error, partly because I didn't understand it, and
partly because I had already updated the LD_LIBRARY_PATH variable.  Was
it a mistake to ignore it?

I welcome any advice on installing gnuradio out-of-tree modules (such as
gr-ettus mentioned in [2]), and advice on managing different versions of
UHD on the same system.  I can't seem to get the gr-ettus installation
to look at the new version of UHD.  Note: I am using the E310 Dizzy
build [3].


[1] http://files.ettus.com/manual/page_build_guide.html
[2] https://github.com/EttusResearch/uhd/wiki/RFNoC:-Getting-Started
[3] http://files.ettus.com/e3xx_images/beta/dizzy-test/

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