You may recall that I was asking about gr_modtool a week ago. I've made some progress and I think I'm very close to making my block work. I'm using Ubuntu Desktop 20.04 in a Virtual Machine, with GNU Radio 3.9.0.0git~master~14059~focal.
Here is what I've learned so far: packages needed: git doxygen clang-format cmake pybind11-dev python3-pygccxml liborc-0.4-dev workflow: cd ~/modules gr_modtool newmod modulename cd gr-modulename gr_modtool add blockname < answer questions about blockname > < edit ./lib/blockname_impl.h ./lib/blockname_impl.cc ./include/modulename/blockname.h > gr_modtool makeyaml < edit ./grc/modulename_blockname.block.yml gr_modtool bind blockname mkdir build cd build cmake ../ < check for errors; ignore '-- Could NOT find MPIR ...' make sudo make install sudo ldconfig (needed once on ubuntu, after initial 'sudo make install') < check gnuradio-companion for modulename->blockname; test blockname > My block is a trivial block that copies a float input to a float output. There are no parameters. I've gone through the above steps without errors, and I get to the very end, where I can see the block in the gnuradio-companion list, BUT when I try to add it to a flowgraph, it won't show up on the canvas. I've tried double-click and drag/drop, but neither puts the block in the flowgraph. I would like to hear from anyone who has built an OOT block from scratch, using 3.9.0 gr_modtool. Is the above procedure correct? What might cause the block to not load? Assuming I get it working, is there a page planned on the wiki where I can document the procedures, tips, and pitfalls(I've found a few)? Thanks, Gavin
