Installing ALSA libraries

libasound2-dev is the one I guess

libasound* works for *most* alsa. When I was playing with it I needed something else, but that *may* not have been alsa related...

don't know what you mean by most - this is the alsa library headers needed for compiling with alsa support

for comedy it is self explaining

libcomedi-dev - Development library for Comedi

however there is possibility that a specific version is required and the autotools system still does not find what it is configured to look for. You have then the option to look into the autotools config files and solve the dependencies in detail.

you should post relevant parts of the error output so we can see what it failed to find and/or what other errors are related

That was the confusing part. There were no errors of any kind reported.

Both libasound2-dev and libcomedi-dev are available and installed without problems. The configure script reported finding both of them and make completed without complaint.

The resulting binary runs and displays in a reasonable fashion. It seems that ALSA works somewhat better, in the sense of giving a recognizable disply to a squarewave input more easily. It's possible to switch to COMEDI device mode, but the display seems unresponsive. Since I'm dealing with a sound capture device that's not very strange.

Thanks very much for everyone's help!

bob prohaska