# Install UHD after GNURadio installation

**URL:** <https://www.ruby-forum.com/t/install-uhd-after-gnuradio-installation/242546>\
**Category:** GNU Radio\
**Created:** [July 1, 2015, 10:44pm UTC](https://www.ruby-forum.com/t/install-uhd-after-gnuradio-installation/242546 "2015-07-01T22:44:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [July 1, 2015, 10:44pm UTC](https://www.ruby-forum.com/t/install-uhd-after-gnuradio-installation/242546/1 "2015-07-01T22:44:51Z")

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Hi,  
now I need to install also the UHD module of gnuradio(before I’ve used  
only  
RTL). Is possible to install this module without reinstall the entire  
gnuradio?  
I’ve tried the easiest apprach, mkdir/cmake/make… in gnuradio/gr-uhd,  
but  
it doesn’t work.

Thanks,  
marco

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**Author:** ![marco\_Ribero](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e9c0ed/32.png) [@marco\_Ribero](https://www.ruby-forum.com/u/marco_Ribero)\
**Post date:** [July 1, 2015, 10:56pm UTC](https://www.ruby-forum.com/t/install-uhd-after-gnuradio-installation/242546/2 "2015-07-01T22:56:32Z")

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Hi Marco,

to be honest, the easiest way seems to be the right one; however, your  
build directory should still be there, so no mkdir necessary.

If you removed or cleaned your build directory, then I’m afraid you will  
need to re-build significant parts of GNU Radio, anyway.  
Probably, _something_ on your system changed since you’ve last built GNU  
Radio, so it’s simply a good idea to update GNU Radio, rebuild it in  
whole (if you’ve got more than 4GB of RAM and more than one CPU core,  
try "make -j\<cpu cores + 1\> ") and re-install it. You’ll also have to  
re-compile every OOT module (eg. gr-osmosdr).

Best regards,  
Marcus

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**Author:** ![marco\_Ribero](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e9c0ed/32.png) [@marco\_Ribero](https://www.ruby-forum.com/u/marco_Ribero)\
**Post date:** [July 3, 2015, 1:54pm UTC](https://www.ruby-forum.com/t/install-uhd-after-gnuradio-installation/242546/3 "2015-07-03T13:54:01Z")

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It was my fault: I dind’t launch the make from /build/gr-uhd…now it  
works…

Thanks,  
marco

Il giorno mer 1 lug 2015 alle ore 22:55 Marcus Müller \<  
removed\_email\_address@domain.invalid\> ha scritto: