the included a-* plugins can not load because of the new version of the GNU C Library

[Len Ovens]

The a-* plugins will not load in Ardour 5.12 because of the new 2.31 version of the GNU C Library. Ardour needs to be recompiled using the new c library so it runs with it. It may also need commit: https://github.com/Ardour/ardour/commit/3df530e7f6521a74d5184c6de04589cd762c5f12 to be cherry picked but the dev says not. Note: downloading the built plugins for Ardour6.0 from the nightly site does give plugins that will work with the Ubuntu Ardour 5.12 package.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ardour 1:5.12.0-3ubuntu3 [modified: usr/lib/ardour5/LV2/a-comp.lv2/a-comp#stereo.ttl usr/lib/ardour5/LV2/a-comp.lv2/a-comp.so usr/lib/ardour5/LV2/a-comp.lv2/a-comp.ttl usr/lib/ardour5/LV2/a-comp.lv2/manifest.ttl usr/lib/ardour5/LV2/a-delay.lv2/a-delay.so usr/lib/ardour5/LV2/a-delay.lv2/a-delay.ttl usr/lib/ardour5/LV2/a-delay.lv2/manifest.ttl usr/lib/ardour5/LV2/a-eq.lv2/a-eq.so usr/lib/ardour5/LV2/a-eq.lv2/manifest.ttl usr/lib/ardour5/LV2/a-fluidsynth.lv2/a-fluidsynth.so usr/lib/ardour5/LV2/a-fluidsynth.lv2/manifest.ttl usr/lib/ardour5/LV2/a-reverb.lv2/a-reverb.so usr/lib/ardour5/LV2/a-reverb.lv2/manifest.ttl usr/lib/ardour5/LV2/reasonablesynth.lv2/manifest.ttl usr/lib/ardour5/LV2/reasonablesynth.lv2/reasonablesynth.so]
ProcVersionSignature: Ubuntu 5.4.0-21.25-lowlatency 5.4.27
Uname: Linux 5.4.0-21-lowlatency x86_64
ApportVersion: 2.20.11-0ubuntu26
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Mon Apr 13 16:17:02 2020
InstallationDate: Installed on 2020-03-25 (19 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200324)
SourcePackage: ardour
UpgradeStatus: No upgrade log present (probably fresh install)

[Len Ovens (len-ovenwerks)]

I notice that on https://launchpad.net/ubuntu/+source/ardour/1:5.12.0-3ubuntu3 The last rebuild was Mon, 23 Mar 2020 07:09:56 +0100 but that installed on a 20.04 system the last change to libgcc-s1 were made Sat, 11 Apr 2020 15:58:53 +0200 maybe Ardour just needs a rebuild. See:https://discourse.ardour.org/t/a-eq-and-a-comp-fail-on-manjaro-xfce/103122/3 for more talk about this too.

[Erich Eickmeyer (eeickmeyer)]

Added two patches to fix build against libgcc-s1 2.31. This had to be cherry-picked directly from Ardour's github for new versions of a-* plugins.

[Erich Eickmeyer (eeickmeyer)]

Patch works with debhelper, but does not work with CDBS.

[Erich Eickmeyer (eeickmeyer)]

Patch works with proper tarball.

[Colin Watson (cjwatson)]

Sponsored.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ardour - 1:5.12.0-3ubuntu4

---------------
ardour (1:5.12.0-3ubuntu4) focal; urgency=medium

  * Fix for a-* plugins with new gcc (LP: #1872555)

 -- Erich Eickmeyer <email address hidden> Mon, 13 Apr 2020 17:18:15 -0700