# Re: RuntimeError: audio\_oss\_sink **URL:** \ **Category:** GNU Radio\ **Created:** [March 1, 2014, 3:15am UTC](https://www.ruby-forum.com/t/re-runtimeerror-audio-oss-sink/239491 "2014-03-01T03:15:41Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![musicdenotation](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Post date:** [March 1, 2014, 3:15am UTC](https://www.ruby-forum.com/t/re-runtimeerror-audio-oss-sink/239491/1 "2014-03-01T03:15:41Z")
> > missing dependency for audio support for Ubuntu Hi Tom op25 is more or less out of business without GR audio support - is there a way to add something in the gr-op25 pybombs recipe to specify that audio should be included as a ‘depends’ prerequisite? Thx to Scott for finding this and reporting it - many users would not be in a position to diagnose and repair this, so it would be better if we could automate it. To me it’s not so much an issue specific to OSS, but rather a generic question of how to ensure that audio capability isn’t omitted (whatever audio flavor the OS/distro happens to use for standard audio support). The goal would I think be to get pybombs to build stuff in the correct order so that by the time it gets finished with gnuradio, audio is already done - that way it would not be necessary for the user to rebuild anything (which might be beyond the capability of many users). Ideally we want to get to a place where the end user just clones pybombs and runs ‘pybombs install gr-op25’ and all the necessary stuff happens behind the scenes - including audio support… Thx & Best Regards Max ---
**Author:** ![ikjtel](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/bc8723/32.png) [@ikjtel](https://www.ruby-forum.com/u/ikjtel)\ **Post date:** [March 1, 2014, 3:46pm UTC](https://www.ruby-forum.com/t/re-runtimeerror-audio-oss-sink/239491/2 "2014-03-01T15:46:25Z")
On Fri, Feb 28, 2014 at 9:11 PM, ikjtel [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > to ensure that audio capability isn’t omitted (whatever audio flavor the > Thx & Best Regards > > Max Hey Max, I’ll keep this in mind and try to figure out how best to handle this in cmake. The problem with trying to make a depends in PyBOMBS is in trying to figure out which audio subsystem you have available to you. We have alsa, oss, jack, portaudio, osx, and windows audio and there’s no guarantee that any one of these will be available or work on your given machine. So we can’t add asound-dev, for instance, as a dependency because you might not be able to actually use ALSA (of course, these days, you most likely can as long as you’re running Linux, but Linux and audio have a painful history – cue rant from Marcus L.). I think the best way we can help is to make it blatantly obvious what audio subsystems GNU Radio was built to support, make sure the gr-audio.conf provides the means to access them, and then have OP25 (or any other project) use the configuration files to set up the audio devices from this (for help with accessing preferences, see the front page of the manual under Configuration / Preference Files). Tom