# Couldn't find gnuradio-core.pc

**URL:** <https://www.ruby-forum.com/t/couldnt-find-gnuradio-core-pc/232806>\
**Category:** GNU Radio\
**Created:** [October 29, 2014, 9:12am UTC](https://www.ruby-forum.com/t/couldnt-find-gnuradio-core-pc/232806 "2014-10-29T09:12:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [October 29, 2014, 9:12am UTC](https://www.ruby-forum.com/t/couldnt-find-gnuradio-core-pc/232806/1 "2014-10-29T09:12:17Z")

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Hello,

After installing gnuradio by running this command

wget [http://www.sbrac.org/files/build-gnuradio](http://www.sbrac.org/files/build-gnuradio) && chmod a+x  
./build-gnuradio && ./build-gnuradio

on ubuntu 14.04, I want to install ‘gr-chancoding’ but it couldn’t find  
the  
‘gnuradio-core’. I also couldn’t find ‘gnuradio-core.pc.’ in  
/usr/local/lib/pkgconfig. where is the problem?

Best,

---

<div class="post-metadata">

**Author:** ![mostafa\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/5e9695/32.png) [@mostafa\_a](https://www.ruby-forum.com/u/mostafa_a)\
**Post date:** [October 29, 2014, 10:00am UTC](https://www.ruby-forum.com/t/couldnt-find-gnuradio-core-pc/232806/2 "2014-10-29T10:00:37Z")

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> on ubuntu 14.04, I want to install ‘gr-chancoding’ but it couldn’t find the  
> ‘gnuradio-core’. I also couldn’t find ‘gnuradio-core.pc.’ in  
> /usr/local/lib/pkgconfig. where is the problem?

You installed GR 3.7.  
The module you’re trying to build is written for GR 3.6.