undefined reference to `typeinfo for JPH::DebugRenderer'

[Shinkeys]

Hey, I'm getting this error. I've checked previous discussions about that, but it didn't help. I've tried to disable RTTI for my project, although I did build that, it doesn't compile because in my understanding I have C code from OpenGL, GLAD etc which can't be used with this flag. Also I've tried to enable RTTI for Jolt but it does not compile either.

#ifndef JPH_DEBUG_RENDERER
#define JPH_DEBUG_RENDERER
#endif

#include Jolt/Renderer/DebugRenderer.h

// Purpose: To make debug system for physics(displaying colliders etc)
// Type: Own implementation of Jolt class
class CollisionDebug : public JPH::DebugRenderer
{
private:
    EBOSetupBuffers _buffers;

public:
    virtual void			                    DrawLine(JPH::RVec3Arg inFrom, JPH::RVec3Arg inTo, JPH::ColorArg inColor) override;
    virtual void			                    DrawTriangle(JPH::RVec3Arg inV1, JPH::RVec3Arg inV2, JPH::RVec3Arg inV3, JPH::ColorArg inColor, JPH::DebugRenderer::ECastShadow inCastShadow = JPH::DebugRenderer::ECastShadow::Off) override;
    virtual JPH::DebugRenderer::Batch			CreateTriangleBatch(const JPH::DebugRenderer::Triangle *inTriangles, int inTriangleCount) override;
	virtual JPH::DebugRenderer::Batch			CreateTriangleBatch(const JPH::DebugRenderer::Vertex *inVertices, int inVertexCount, const JPH::uint32 *inIndices, int inIndexCount) override;
    virtual void			                    DrawGeometry(JPH::RMat44Arg inModelMatrix, const JPH::AABox &inWorldSpaceBounds, float inLODScaleSq, JPH::ColorArg inModelColor, 
                                                            const JPH::DebugRenderer::GeometryRef &inGeometry, JPH::DebugRenderer::ECullMode inCullMode = JPH::DebugRenderer::ECullMode::CullBackFace, 
                                                            JPH::DebugRenderer::ECastShadow inCastShadow = JPH::DebugRenderer::ECastShadow::On, JPH::DebugRenderer::EDrawMode = JPH::DebugRenderer::EDrawMode::Solid) override;
    virtual void			                    DrawText3D(JPH::RVec3Arg inPosition, const JPH::string_view &inString, JPH::ColorArg inColor = JPH::Color::sWhite, float inHeight = 0.5f) override;



    CollisionDebug();
};

[Shinkeys]

Good to mention that I have realization of this constructor as well as for all of these methods.

[jrouwe]

If typeinfo is undefined then it must mean that you're compiling Jolt without type info. Adding -DCPP_RTTI_ENABLED=ON to the cmake commandline should enable it. Note that you need to delete the previous build files in order for changes to take effect. Cmake doesn't update existing build files when you change a setting.

The other thing that looks suspicious is this:

#ifndef JPH_DEBUG_RENDERER
#define JPH_DEBUG_RENDERER
#endif

If Jolt was compiled without this setting then defining it here will cause unresolved external symbols like typeinfo although I would expect to see more missing symbols.

[Shinkeys]

Thanks for the answer. Yeah, I didn't so I removed this define you mentioned. Although I have tried now to change build configuration in cmake_linux_clang_gcc.sh file as you mentioned to

cmake -S . -B $BUILD_DIR -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_CXX_COMPILER=$COMPILER -DCPP_RTTI_ENABLED=ON "${@}"

and removed Linux_Debug folder to do it from scratch but it didn't help and I'm still getting this

/usr/bin/ld: CMakeFiles/SamuraiCiao.dir/src/systems/collisionDebug.cpp.o:(.data.rel.ro._ZTI14CollisionDebug[_ZTI14CollisionDebug]+0x10): undefined reference to `typeinfo for JPH::DebugRenderer'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

[jrouwe]

Try running make -n to see if the -frtti argument is present when compiling Jolt's files. If you see -fno-rtti then you are not passing the CPP_RTTI_ENABLED flag correctly. I can only guess how you include Jolt in your own project, you may have to do set(CPP_RTTI_ENABLED ON) before including Jolt's cmake file or you may have to do something else.

[Shinkeys]

Yeah I did everything u said and it still doesn't work, grep didn't show any -fno-rtti messages, but there were a lot of -frtti. This is really strange, can't even think what else could be wrong. Maybe it would give u some important info:
This is how I include and link Jolt:
add_definitions(-DJPH_PROFILE_ENABLED -DJPH_DEBUG_RENDERER -DJPH_OBJECT_STREAM)
target_include_directories(SamuraiCiao PRIVATE vendor/imgui ${JoltPhysics_SOURCE_DIR}/..)
target_link_libraries(SamuraiCiao glfw OpenGL::GL imgui assimp Jolt)
Tried to use set(CPP_RTTI_ENABLED ON) in my CMAKE before Jolt's include, but it didn't work either.

Also I did change build configuration as I sent you above in the previous message. Would post link there, maybe you would have time someday to look in the header file which causes issues if I wouldn't resolve it. Thanks for the tips, would look into it more deeply again.

https://github.com/Shinkeys/SamuraiCiao/blob/main/headers/systems/collisionDebug.h

[Shinkeys]

Yep. I certainly had some issues with RTTI. I tried to disable it everywhere again and my code works now, not sure why I got issues with OpenGL before after disabling it.
Jrouwe thanks a lot for you efforts.