Finally: “make clean”, “make” and “make check”.
This results in:
ImportError:
/home/jonas/gnuradio/gr-howto-write-a-block-3.0.2/src/lib/.libs/_howto.so:
undefined symbol: _Z10jonas_testv
What you need to do is to surround the declaration of jonas_testv() with
en extern "C" {} declaration. If you don't do this, then the linker is
looking for the "mangled name" , which is C++'s way to embed type
declarations in a function name. If the function is declared in the .h
as extern "C", it will just expect the function name with an underscore
in front of it, just like C does.
Cheers,
Jan
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