[needs-sponsor] ignition-physics testsuite segfaults on amd64/Jammy when using flto=auto -ffat-lto-objects

[Jose Luis Rivero]

Current ignition-physics version 5.1.0+ds1-4 fails on amd64 with segfaults in some of the tests:
https://launchpadlibrarian.net/589246385/buildlog_ubuntu-jammy-amd64.ignition-physics_5.1.0+ds1-4_BUILDING.txt.gz

The situation was unusual since the same version imported from Debian Sid built just fine. I was debugging the problem in upstream issue tracker: https://github.com/ignitionrobotics/ign-physics/issues/330.

Summary: Ubuntu Jammy is using linker optimizations -flto=auto -ffat-lto-objects that make the package to fail when running tests in ignition-physics.

[Jose Luis Rivero (j-rivero)]

Attached is the debdiff that solves the problem for the amd64 build by filtering out the flto=auto -ffat-lto-objects.

The patch also includes a fix for the ppc64 build now that we are at it. Both changes are reflected in the Changelog and tested in my PPA:

 * amd64 https://launchpad.net/~j-rivero/+archive/ubuntu/jammy-packages/+build/23249466
 * ppc64 https://launchpad.net/~j-rivero/+archive/ubuntu/jammy-packages/+build/23249469

[Launchpad Janitor (janitor)]

This bug was fixed in the package ignition-physics - 5.1.0+ds1-4ubuntu1

---------------
ignition-physics (5.1.0+ds1-4ubuntu1) jammy; urgency=medium

    * Filter out flto=auto -ffat-lto-objects to fix amd64 build
      LP: #1965064
    * Extend ppc64 patch to relax test expectation (fix ppc64 build)

 -- Jose Luis Rivero <email address hidden> Wed, 16 Mar 2022 19:26:31 +0000