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Revision as of 16:25, 28 January 2020 by IndianaM1ke (talk | contribs) (tweak for OSX)
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When you start gnuradio-companion or execute grcc, if you get this, or a similar, error message:


then put the following 'export' commands in your ~/.bashrc or ~/.profile or ~/.bash_aliases file and restart your terminal.

Determine your installation prefix

If you don't know or remember your installation prefix, perform the following step:

  • on a terminal screen, enter gnuradio-config-info --prefix

then use that prefix in place of {prefix} in the following commands

Mac OS X / macOS

See the MacInstall guide for issues and settings on that OS.


Linux-based systems

- For most Debian / Ubuntu (and derivative) systems, and most other 32-bit Unix/Linux systems, use:

export PYTHONPATH={prefix}/lib/python3/dist-packages:{prefix}/lib/python3/site-packages:$PYTHONPATH

- For other 64-bit systems, use:

export PYTHONPATH={prefix}/lib64/python3/site-packages:$PYTHONPATH


Linux-based systems

- For most 32-bit systems and most Debian / Ubuntu (and derivative) systems, use:

export LD_LIBRARY_PATH={prefix}/lib:$LD_LIBRARY_PATH

- For other 64-bit systems, use:

export LD_LIBRARY_PATH={prefix}/lib64:$LD_LIBRARY_PATH