Hello,

My system config:

OS: Ubuntu 20.04.3 LTS

OS Type: 64-bit

RAM: 3.8 GB

Processor: Intel Core i5-2450M CPU @2.50GHz x4

UHD version: 3.15.0.0

GNU Radio version: 3.8.1.0

SDR Device: Ettus USRP N320

Antenna Freq: 868 MHz

I tried to build osmocom block in my existing gnuradio environment, but I got the following error during cmake command. The console logs are shown below.

Console logs:

komro@komro-HP-ProBook-6560b:~/gnuradio/gr-osmosdr/build$ cmake ../

-- The CXX compiler identification is GNU 9.3.0

-- The C compiler identification is GNU 9.3.0

-- Check for working CXX compiler: /usr/bin/c++

-- Check for working CXX compiler: /usr/bin/c++ -- works

-- Detecting CXX compiler ABI info

-- Detecting CXX compiler ABI info - done

-- Detecting CXX compile features

-- Detecting CXX compile features - done

-- Check for working C compiler: /usr/bin/cc

-- Check for working C compiler: /usr/bin/cc -- works

-- Detecting C compiler ABI info

-- Detecting C compiler ABI info - done

-- Detecting C compile features

-- Detecting C compile features - done

-- Build type not specified: defaulting to release.

-- Found Git: /usr/bin/git (found version "2.25.1")

-- Extracting version information from git describe...

-- Configuring Boost C++ Libraries...

-- Found Boost: /usr/lib/x86_64-linux-gnu/cmake/Boost-1.71.0/BoostConfig.cmake (found version "1.71.0") found components: thread system

-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1")

-- Checking for module 'gruel'

--   No package 'gruel' found

-- Could NOT find GRUEL (missing: GRUEL_LIBRARIES GRUEL_INCLUDE_DIRS)

-- Checking for module 'gnuradio-core'

--   No package 'gnuradio-core' found

-- Could NOT find GNURADIO_CORE (missing: GNURADIO_CORE_LIBRARIES GNURADIO_CORE_INCLUDE_DIRS)

-- Checking for module 'gnuradio-iqbalance'

--   No package 'gnuradio-iqbalance' found

-- Could NOT find GNURADIO_IQBALANCE (missing: GNURADIO_IQBALANCE_LIBRARIES GNURADIO_IQBALANCE_INCLUDE_DIRS)

-- Checking for module 'uhd'

--   No package 'uhd' found

-- Could NOT find UHD (missing: UHD_LIBRARIES UHD_INCLUDE_DIRS)

-- Checking for module 'gnuradio-uhd'

--   Found gnuradio-uhd, version 3.8.1

-- gnuradio-uhd not found.

-- Could NOT find GNURADIO_UHD (missing: GNURADIO_UHD_INCLUDE_DIRS)

-- Checking for module 'gnuradio-fcd'

--   No package 'gnuradio-fcd' found

-- gnuradio-fcd not found.

-- Could NOT find GNURADIO_FCD (missing: GNURADIO_FCD_LIBRARIES GNURADIO_FCD_INCLUDE_DIRS)

-- Checking for module 'gnuradio-fcdproplus'

--   No package 'gnuradio-fcdproplus' found

-- gnuradio-fcdproplus not found.

-- Could NOT find GNURADIO_FCDPP (missing: GNURADIO_FCDPP_LIBRARIES GNURADIO_FCDPP_INCLUDE_DIRS)

-- Checking for module 'libosmosdr'

--   No package 'libosmosdr' found

-- libosmosdr not found.

-- Checking for module 'librtlsdr'

--   Found librtlsdr, version 0.6.0-32-gd770

-- Found librtlsdr: /usr/local/include, /usr/local/lib/librtlsdr.so

-- Checking for module 'libmirisdr'

--   No package 'libmirisdr' found

-- libmirisdr not found.

-- Checking for module 'libhackrf'

--   No package 'libhackrf' found

-- Could NOT find LIBHACKRF (missing: LIBHACKRF_LIBRARIES LIBHACKRF_INCLUDE_DIRS)

-- Checking for module 'libairspy'

--   No package 'libairspy' found

-- Could NOT find LIBAIRSPY (missing: LIBAIRSPY_LIBRARIES LIBAIRSPY_INCLUDE_DIRS)

-- Checking for module 'libbladeRF'

--   No package 'libbladeRF' found

-- libbladeRF not found.

-- Found Doxygen: /usr/bin/doxygen (found version "1.8.17") found components: doxygen missing components: dot

CMake Error at CMakeLists.txt:166 (message):

  Gruel required to build gr-osmosdr

-- Configuring incomplete, errors occurred!

See also "/home/komro/gnuradio/gr-osmosdr/build/CMakeFiles/CMakeOutput.log".

See also "/home/komro/gnuradio/gr-osmosdr/build/CmakeFiles/CmakeError.log".

What am I missing here? I installed the required RTL-SDR packages too!

PFA CMake files

Best regards,
Thangaraj