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> Carla 2.4.3 has been released
On 2022-04-15 by falkTX

This is a small bugfix release for the Carla v2.4 series.


Carla is an audio plugin host, with support for many audio drivers and plugin formats.
It has some nice features like automation of parameters via MIDI CC (and send output back as MIDI too) and full OSC control.


  • Fix build for Alpine Linux and BSD
  • Fix integration with internal Qt toolbar visibility state
  • Fix plugin search (regression from 2.4.2)
  • Fix several Windows UTF-16 issues

Build related changes

  • Add -fno-gnu-unique to default build flags
  • Implement VERBOSE make flag
  • Make build compatible with LTO, now enabled on official macOS/Windows binaries
  • Replace CARLA_EXPORT macro with separate API / PLUGIN export options
  • Set new X-NSM-Exec desktop file property


To download Carla binaries or source code, jump on over to the KXStudio downloads section.
If you're using the KXStudio repositories, you can simply install "carla".
Bug reports and feature requests are welcome! Jump on over to the Carla's Github project page for those.

Notes for users

This was already the case for v2.2 and v2.3 but it is worth reiterating:
When using JACK2, the canvas - plugin integrations requires at least JACK2 v1.9.13.
This is because Carla relies on JACK meta-data in order to store information about each plugin/client, and meta-data was only added to JACK2 in version 1.9.13.
Alternatively, you can use JACK1 instead of JACK2, which has meta-data support since a long time.

Also there are still no official Linux binary builds for v2.4.3.
Carla v2.4.3 is provided in the KXStudio repositories and in many official Linux distribution repositories anyway.