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I'm relatively new to compiling software. I downloaded a package called gr-scan which uses gnuradio and osmosdr (I have both installed and working via pacman already). The instructions say to edit the Makefile and run make.

I checked the paths to gnuradio and osmosdr in the Makefile - they exist and have things in them - but the build returns this error;

In file included from main.cpp:23:0:
topblock.hpp:23:26: fatal error: gr_top_block.h: No such file or directory
compilation terminated.
Makefile:23: recipe for target 'gr-scan' failed
make: *** [gr-scan] Error 1

A quick Google shows gr_top_block.h is part of the core gnuradio source which I thought pacman would have kept somewhere? But when I search my drive with find / -name "gr_top_block.h" I get no results.

What's the next step? Should I download gnuradio and tell make where the source for it is somehow? Any advice appreciated

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    You need to download the source for gnuradio and update your include path as appropriate.
    – DavidPostill ♦
    Nov 22, 2015 at 9:59
  • if it uses Makefiles for building, it is probably incompatible with the current version of GNU Radio; almost all out-of-tree GNU Radio modules use CMake nowadays.
    – Marcus Müller
    Mar 13, 2016 at 14:50

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