Thanks, Marcus Müller, finally I concluded that linker can not find the lib files for gr-ettus. Same Gnuradio package like Gnuradio-analog and son on...I
added a pkconfig file to pkgconfig folders...
I attached the file. now with pkgconfig command, I can see the lib info (in this situation gnuradio-ettus).
in CPP project now everything is ok.
pkg-config --modversion gnuradio-ettus
3.8.1
Hi sp h,
we don't know how you're building this. You'll need to provide us with a minimal viable example that triggers this and we could do ourselves.
Also, you need to make sure to link against gr-ettus. It seems you're not doing this correctly; again, we don't know how you're building this, so it's hard to advise.
Best regards,
Marcus
gnuradio-ettus.pc