> unknown rtaudio module: 'ALSA', using dummy modulertaudio: dummy module enabled.

That means the librtalsa.so  was not found, which could be either because it was never built or
because Csound is not looking in the right place.

Check that your build is actually finding the dependencies and building the Csound backend modules (see the messages printed by CMake),
and then make sure that you either install Csound or point your OPCODE7DIR64 (doubles) or OPCODE7DIR (floats) environment var to
the plugin directory.

> On 24 Jun 2026, at 19:37, James Hearon  wrote:
> 
> Hi,
> I'm getting round late to building csound7 on f44 but can't seem to get rtaudio flag working after building.
> Such as in CsOptions, 
> csound -s -d -+rtaudio=ALSA -odevaudio -b1024 -B16384
> 
> I get unknown rtaudio module: 'ALSA', using dummy modulertaudio: dummy module enabled.
> 
> Nothing seems to work for rtaudio: pipewire, portaudio, etc.
> 
> ...but works fine using csound6 on same system.
> 
> I'm wondering what I might be missing in the build to get rtaudio working for csound7?
> 
> Regards,
> Jim