[SOLVED] Error with plugin Flexible

[amazier]

Dear all,
I successfully downloaded/compiled SOFA and some additional plugins such as Preassembled Mass, Sofa Python, or Compliant.
But we recently have faced a common issue in compiling the Flexible plugin with one of my colleagues.
I tried to compile with both ninja and make but the result is the same.

[12/14] Linking CXX shared library lib/libFlexible.so.0.1
FAILED: lib/libFlexible.so.0.1

It looks like a linking problem… Any idea?
I’m using gcc9 and cmake 3.16.3
Many thanks and have a good day,

Arnaud

[Hugo]

Hi @amazier and thanks for the report.

(almost) Full log was:

[12/14] Linking CXX shared library lib/libFlexible.so.0.1
FAILED: lib/libFlexible.so.0.1 
: && /usr/bin/g++-9 -fPIC -Wall -W -O3 -DNDEBUG -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2  .......  -Wl,-rpath-link,/home/arnaud/dev/sofa/build/lib && :
/usr/bin/ld: applications/plugins/Flexible/CMakeFiles/Flexible.dir/deformationMapping/LinearMapping_affine.cpp.o: in function 
sofa::core::objectmodel::TClassInfo<sofa::component::visualmodel::visualmodelimpl>::dynamicCast(sofa::core::objectmodel::Base*) const':
LinearMapping_affine.cpp:(.text._ZNK4sofa4core11objectmodel10TClassInfoINS_9component11visualmodel15VisualModelImplEE11dynamicCastEPNS1_4BaseE[_ZNK4sofa4core11objectmodel10TClassInfoINS_9component11visualmodel15VisualModelImplEE11dynamicCastEPNS1_4BaseE]+0xf): undefined reference to typeinfo for sofa::component::visualmodel::VisualModelImpl'
/usr/bin/ld: applications/plugins/Flexible/CMakeFiles/Flexible.dir/deformationMapping/LinearMapping_affine.cpp.o: in function sofa::core::objectmodel::TClassInfo</sofa::component::visualmodel::visualmodelimpl><sofa::component::visualmodel::visualmodelimpl>::get()':
LinearMapping_affine.cpp:(.text._ZN4sofa4core11objectmodel10TClassInfoINS_9component11visualmodel15VisualModelImplEE3getEv[_ZN4sofa4core11objectmodel10TClassInfoINS_9component11visualmodel15VisualModelImplEE3getEv]+0x46): undefined reference to typeinfo for sofa::component::visualmodel::VisualModelImpl'
/usr/bin/ld: applications/plugins/Flexible/CMakeFiles/Flexible.dir/engine/ComputeWeightEngine.cpp.o: in function sofa::core::objectmodel::TClass<sofa::component::visualmodel::VisualModelImpl, std::pair<sofa::core::visual::VisualModel, sofa::component::visualmodel::Vec3State> >::dynamicCast(sofa::core::objectmodel::Base*) const':
ComputeWeightEngine.cpp:(.text._ZNK4sofa4core11objectmodel6TClassINS_9component11visualmodel15VisualModelImplESt4pairINS0_6visual11VisualModelENS4_9Vec3StateEEE11dynamicCastEPNS1_4BaseE[_ZNK4sofa4core11objectmodel6TClassINS_9component11visualmodel15VisualModelImplESt4pairINS0_6visual11VisualModelENS4_9Vec3StateEEE11dynamicCastEPNS1_4BaseE]+0xf): undefined reference to typeinfo for sofa::component::visualmodel::VisualModelImpl'
/usr/bin/ld: applications/plugins/Flexible/CMakeFiles/Flexible.dir/engine/ComputeWeightEngine.cpp.o: in function sofa::core::objectmodel::TClass<sofa::component::visualmodel::VisualModelImpl, std::pair<sofa::core::visual::VisualModel, sofa::component::visualmodel::Vec3State> >::isInstance(sofa::core::objectmodel::Base*) const':
ComputeWeightEngine.cpp:(.text._ZNK4sofa4core11objectmodel6TClassINS_9component11visualmodel15VisualModelImplESt4pairINS0_6visual11VisualModelENS4_9Vec3StateEEE10isInstanceEPNS1_4BaseE[_ZNK4sofa4core11objectmodel6TClassINS_9component11visualmodel15VisualModelImplESt4pairINS0_6visual11VisualModelENS4_9Vec3StateEEE10isInstanceEPNS1_4BaseE]+0x28): undefined reference to typeinfo for sofa::component::visualmodel::VisualModelImpl'
/usr/bin/ld: applications/plugins/Flexible/CMakeFiles/Flexible.dir/engine/ComputeWeightEngine.cpp.o: in function sofa::core::objectmodel::TClass<sofa::component::visualmodel::VisualModelImpl, std::pair<sofa::core::visual::VisualModel, sofa::component::visualmodel::Vec3State> >::TClass()':
ComputeWeightEngine.cpp:(.text._ZN4sofa4core11objectmodel6TClassINS_9component11visualmodel15VisualModelImplESt4pairINS0_6visual11VisualModelENS4_9Vec3StateEEEC2Ev[_ZN4sofa4core11objectmodel6TClassINS_9component11visualmodel15VisualModelImplESt4pairINS0_6visual11VisualModelENS4_9Vec3StateEEEC5Ev]+0x3f): undefined reference to typeinfo for sofa::component::visualmodel::VisualModelImpl'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

This may come from some missing dependency, thus undefined ref.
I will have a look at it.

Hugo

[Hugo]

This was indeed an issue @amazier
This was fixed in PR #1302.

Since the v19.12 branch is a release branch, it is frozen when released. Starting from v20.06, a new policy will be applied: backporting all fixes to the previous release. So that the community, you all guys, can rely confidently on a robust and stable release.

Best

Hugo

[amazier]

Hi Hugo,

Thank you for your reply, I checked out on the master branch and it worked!
Have a nice day, best,

Arnaud

[Author]

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