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Re: [Discuss-gnuradio] adding XML support to OOT block

From: Martin Braun
Subject: Re: [Discuss-gnuradio] adding XML support to OOT block
Date: Mon, 16 May 2016 09:53:17 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0

Hi Steven,

if you go to cgran.org, you'll find a bunch of OOTs that have external
dependencies. gr-nacl depends on libsodium, for example. I recommend
checking those CMake files for examples.


On 05/16/2016 08:37 AM, Steven Knudsen wrote:
> Hi,
> I would like to do something I think is not uncommon and that’s to add
> XML support to a block (e.g., to read a config file). 
> Everything compiles, but on link all the libxml2 functions generate
> “undefined references”. I believe there is a missing -lxml2, but how and
> where to add?
> Online search does not turn up much, and what there is seems to be from
> around 2008 when the build system was different.
> I did try modifying the CMakeLists.txt for my module, but it appears
> that I don’t know how to augment or override the GR support for libxml2.
> That is, I can add find_package(LibXml2) and that works as expected, but
> modifying any of the env vars doesn’t seem to help.
> Any advice would be much appreciated. I suspect there may be an example
> out there that I’ve just not found and I will be chagrined, but grateful
> to the person that kicks me that direction…
> Thanks very much,
> steven
> Steven Knudsen, Ph.D., P.Eng.
> www. techconficio.ca <http://techconficio.ca>
> www.linkedin.com/in/knudstevenknudsen
> <http://www.linkedin.com/in/knudstevenknudsen>
> /Der entscheidende Augenblick der menschlichen Entwicklung
> ist immerwährend. Darum sind die revolutionären geistigen Bewegungen,
> welche alles Frühere für nichtig erklären, im Recht, denn es ist
> noch nichts geschehen. - Franz Kafka/
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