Bug#983954: simbody: ftbfs with -march=x86-64-v3

[Matthias Klose]

Package: src:simbody
Version: 3.6.1+dfsg-7
Severity: minor
User: debian-gcc at lists.debian.org
Usertags: ftbfs-x86-64-v3

Starting with LLVM 12 and GCC 11 (and backported to gcc-10 for Debian), 
GCC introduces optimizations for new micro-architecture levels from
the x86-64 psABI.  Filing these bug reports for packages building with
the current level (x86-64), but not with x86-64-v3.

To reproduce these issues, append -march=x86-64-v3 to the compiler
flags (CFLAGS, CXXFLAGS, ...).  You also need hardware supporting these.
The easiest way is to call the dynamic linker in glibc 2.33 like
  /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 --help
Otherwise look at the flags in /proc/cpuinfo and compare these with
those from table 3.1 in the System V Application Binary Interface doc:
https://gitlab.com/x86-psABIs/x86-64-ABI/-/wikis/x86-64-psABI

Please don't upload a package setting these flags by default.  The
x86-64 baseline is still unchanged.

The full build log can be found at:
http://people.debian.org/~doko/logs/20210228/filtered/gcc10-v3/simbody_3.6.1+dfsg-7_unstable_gcc10-v3.log
The last lines of the build log are at the end of this report.

[...]
        Start  81: VerletIntegratorTest
 78/107 Test  #81: VerletIntegratorTest ...........................   Passed    0.93 sec
        Start  82: GazeboBasicControllerResponse
 79/107 Test  #82: GazeboBasicControllerResponse ..................   Passed    0.66 sec
        Start  83: GazeboInelasticCollision
 80/107 Test  #83: GazeboInelasticCollision .......................   Passed    1.52 sec
        Start  84: GazeboReactionForce
 81/107 Test  #84: GazeboReactionForce ............................   Passed    0.79 sec
        Start  85: GazeboReactionForceWithAppliedForceCompliant
 82/107 Test  #56: ExplicitEulerIntegratorTest ....................   Passed    9.41 sec
        Start  86: GazeboReactionForceWithAppliedForceRigid
 83/107 Test  #85: GazeboReactionForceWithAppliedForceCompliant ...   Passed   10.56 sec
        Start  87: TestAngleConversions
 84/107 Test  #87: TestAngleConversions ...........................   Passed    0.01 sec
        Start  88: TestCollisionDetectionAlgorithm
 85/107 Test  #88: TestCollisionDetectionAlgorithm ................   Passed    0.12 sec
        Start  89: TestConstraints
 86/107 Test  #71: SemiExplicitEuler2IntegratorTest ...............   Passed   16.69 sec
        Start  90: TestCustomConstraints
 87/107 Test  #89: TestConstraints ................................   Passed    1.09 sec
        Start  91: TestCustomMobilizedBodies
 88/107 Test  #91: TestCustomMobilizedBodies ......................   Passed    0.07 sec
        Start  92: TestElasticFoundationForce
 89/107 Test  #90: TestCustomConstraints ..........................   Passed    2.91 sec
        Start  93: TestForces
 90/107 Test  #93: TestForces .....................................   Passed    0.33 sec
        Start  94: TestFunctionBasedMobilizedBodies
 91/107 Test  #94: TestFunctionBasedMobilizedBodies ...............   Passed    0.35 sec
        Start  95: TestGravity
 92/107 Test  #95: TestGravity ....................................   Passed    0.02 sec
        Start  96: TestHuntCrossleyForce
 93/107 Test  #96: TestHuntCrossleyForce ..........................   Passed    0.03 sec
        Start  97: TestLinearBushing
 94/107 Test  #97: TestLinearBushing ..............................   Passed    0.20 sec
        Start  98: TestLoneParticle
 95/107 Test  #98: TestLoneParticle ...............................   Passed    0.03 sec
        Start  99: TestMassMatrix
 96/107 Test  #99: TestMassMatrix .................................   Passed    0.04 sec
        Start 100: TestMobilizedBody
 97/107 Test #100: TestMobilizedBody ..............................   Passed    0.27 sec
        Start 101: TestMobilizerReactionForces
 98/107 Test #101: TestMobilizerReactionForces ....................   Passed    0.03 sec
        Start 102: TestNoseHooverThermostat
 99/107 Test  #72: SemiExplicitEulerIntegratorTest ................   Passed   20.76 sec
        Start 103: TestObservedPointFitter
100/107 Test  #86: GazeboReactionForceWithAppliedForceRigid .......   Passed   16.23 sec
        Start 104: TestOrientedBoundingBox
101/107 Test #104: TestOrientedBoundingBox ........................   Passed    0.01 sec
        Start 105: TestParallelForces
102/107 Test #103: TestObservedPointFitter ........................   Passed    1.86 sec
        Start 106: TestPimpl1
103/107 Test #106: TestPimpl1 .....................................   Passed    0.00 sec
        Start 107: TestReverseMobilizers
104/107 Test #107: TestReverseMobilizers ..........................   Passed    0.02 sec
105/107 Test #102: TestNoseHooverThermostat .......................   Passed    2.47 sec
106/107 Test #105: TestParallelForces .............................   Passed    6.32 sec
107/107 Test  #92: TestElasticFoundationForce .....................   Passed   12.33 sec

99% tests passed, 1 tests failed out of 107

Total Test time (real) =  32.63 sec

The following tests FAILED:
	 76 - TestGeo (Failed)
Errors while running CTest
make[1]: *** [Makefile:129: test] Error 8
make[1]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
dh_auto_test: error: cd obj-x86_64-linux-gnu && make -j4 test ARGS\+=-j4 returned exit code 2
make: *** [debian/rules:38: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2