Cannot specify link libraries for target "Python::NumPy"

[Chad Spooner]

All:

I'm building gnuradio from source on an Ubuntu 18.04.6 system.

I'm using the instructions from: https://wiki.gnuradio.org/index.php/InstallingGR#From_Source

When I get to the step:

   # Note: In the following command, you can add
   -DCMAKE_INSTALL_PREFIX=XXX to install GNU Radio into the PREFIX XXX;
   if not specified, then the PREFIX is /usr/local. See other CMake
   options in Common cmake flags.

   cmake -DCMAKE_BUILD_TYPE=Release
   -DPYTHON_EXECUTABLE=/usr/bin/python3 ../

I get an error relating to numpy:

   -- User set python executable /usr/bin/python3
   CMake Error at cmake/Modules/GrPython.cmake:101 (target_link_libraries):
      Cannot specify link libraries for target "Python::NumPy" which is
   not built
      by this project.
   Call Stack (most recent call first):
      CMakeLists.txt:318 (include)

   -- Configuring incomplete, errors occurred!





Any advice?

Thanks,

C


--
Chad M. Spooner, PhD
NorthWest Research Associates
301 Webster Street
Monterey, CA 93940
cmspoo...@nwra.com
831 582 4904
cyclostationary.blog

numpy is installed and I can 'import numpy' successfully in python3. (In fact I had issued "apt-get install *numpy*" previously and it was successful.) I tried finding this error in my archive of gnuradio discussion-list emails, but came up empty, as did my google search.

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