Server-only build with -fsanitize=undefined fails

[kimden]

Description

Attempting to compile STK with -fsanitize=undefined (more precisely, cmake command line was cmake .. -DCMAKE_BUILD_TYPE=Debug -DSERVER_ONLY=ON -DUSE_SQLITE3=OFF -DNO_SHADERC=OFF -DUSE_USAN=ON, where I defined USAN analogously to other sanitizers) fails like this:

[ 43%] Linking CXX executable bin/supertuxkart
/usr/bin/ld: CMakeFiles/supertuxkart.dir/src/karts/controller/local_player_controller.cpp.o:(.data.rel+0x2258): undefined reference to `typeinfo for ParticleEmitter'
/usr/bin/ld: CMakeFiles/supertuxkart.dir/src/karts/kart.cpp.o:(.data.rel+0x1898): undefined reference to `typeinfo for ParticleEmitter'
/usr/bin/ld: CMakeFiles/supertuxkart.dir/src/karts/kart.cpp.o:(.data.rel+0x6a98): undefined reference to `typeinfo for ParticleEmitter'
/usr/bin/ld: CMakeFiles/supertuxkart.dir/src/karts/kart_gfx.cpp.o:(.data.rel+0x558): undefined reference to `typeinfo for ParticleEmitter'
/usr/bin/ld: CMakeFiles/supertuxkart.dir/src/karts/kart_gfx.cpp.o:(.data.rel+0x598): undefined reference to `typeinfo for ParticleEmitter'
/usr/bin/ld: CMakeFiles/supertuxkart.dir/src/tracks/track_object_presentation.cpp.o:(.data.rel+0x198): more undefined references to `typeinfo for ParticleEmitter' follow
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/supertuxkart.dir/build.make:7101: bin/supertuxkart] Error 1
make[1]: *** [CMakeFiles/Makefile2:182: CMakeFiles/supertuxkart.dir/all] Error 2
make: *** [Makefile:136: all] Error 2

It doesn't fail with -DSERVER_ONLY=OFF. From what I understand, the log above mentions almost all files where ParticleEmitter is mentioned, in some cases it's mentioned only within #ifndef SERVER_ONLY block, and its whole cpp file is inside #ifndef SERVER_ONLY too (but not the header file). However, I'm not familiar how exactly it works, and got confused trying to fix it myself.

Configuration

STK release version: latest git 84dff44