Linking issues with plugin when loading it

[jjcasmar]

I am trying to implement a plugin with some new mappings. For now, I am just trying a test case, implement something equivalent to the IdentityMultiMapping.

My code compiles fine, but when I try to load the plugin in a scene, I get a linking issue:

[ERROR]   [PluginManager] Plugin loading failed (/home/jjcasmar/projects/CPFSofaPlugin/build/Debug/lib/libCPFSofaPlugin.so): /home/jjcasmar/projects/CPFSofaPlugin/build/Debug/lib/libCPFSofaPlugin.so: undefined symbol: _ZN4sofa4core12MultiMappingINS_11defaulttype14StdVectorTypesINS2_3VecILi3EfEES5_fEES6_E5applyEPKNS0_16MechanicalParamsENS0_11TMultiVecIdILNS0_7VecTypeE1ELNS0_9VecAccessE1EEENSB_ILSC_1ELSD_0EEE

The code can be find here:
https://gitlab.com/jjcasmar/cpfsofaplugin/-/tree/master

[Hugo]

Hey @jjcasmar good to see you again!

Indeed, linking issue.
It appears you have a linking issue related to the function ::apply().

To know where it comes from, please run:
ldd YOUR_PLUGIN.so

Could you also share with us the dependencies of your plugin? More especially what did you wrote in your CMakeLists.txt in the target_link_libraries( ... ) command?

Cheers

Hugo

[jnbrunet]

Hi @jjcasmar

Make sure you are including the following header:

#include <sofa/core/MultiMapping.inl>

(note the ‘.inl’ file extension here)

[jjcasmar]

Hi @Hugo, you can find all the code in the gitlab (its easier to share it that way). Anyway, @jnbrunet solution works fine.
Shouldnt the .inl be already included in sofa/core/MultiMapping.h?

[Hugo]

Oupsi, Jean Nicolas is right.
It was no linking error but a unknown symbol, so an include missing!

[Author]

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