Hi,
I am working on a ubuntu machine and am following the HOWTO example as the following link shows. My program works fine until loading the howto_square2_ff module into the GRC library. The tutorial says that "If you do a make install from the build directory, you can use the block in GRC. If GRC is already running, you can hit the "Reload Blocks" button in the GRC toolbar; it's a blue circular arrow on the right-hand side. You should now see a "HOWTO" category in the block tree." After I executed the commands specified by the tutorial, I did not see any HOWTO blocks when I boot the GRC using $gnuradio-companion. Attached is a tarball of my code. Would be great to get comments. Thanks.
Pengyu
gr-howto.tar.gz