Godot + Jolt, but not the extension. #1464

hugarty · 2025-01-18T21:08:51Z

hugarty
Jan 18, 2025

Hi! First, I want to say that you are amazing to create Jolt and put it free for everyone. Thank you! Thank you a lot!

I want Jolt to work with Godot but I need to CROSS_PLATFORM_DETERMINISM. Godot-Jolt don't assure it, so I can't use. I talk with @mihe and he told me to ask help here.

My solution is to create a project outside godot and plug it into godot using Binding to External Libraries.

I don't know if it is the best solution. I need to compile for multiples differents platforms, pass data from Jolt to Godot (and vice versa) and have CROSS_PLATFORM_DETERMINISM.
If you have another solution (like Godot Extensions, Sharing data across processes, etc ), please tell me.

The problem:
When I try to use Binding to External Libraries with godot I recieve a lot of errors. People who I talked said that are because of cmake target_compile_definitions, that I don't put into Scons correctly.

The branch with no definitions: https://github.com/hugarty/Jolt-Godot/tree/jolt

This error in link phase happens:

Error

[100%] Compiling core/error/error_macros.cpp ...
[100%] progress_finish(["progress_finish"], [])
[100%] Linking Program bin/godot.linuxbsd.editor.x86_64 ...
[100%] /usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::FirstPhysicsManager()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:198:(.text+0x65): undefined reference to `JPH::AssertFailed'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::RegisterTypes()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/RegisterTypes.h:24:(.text+0xd6): undefined reference to `JPH::RegisterTypesInternal(unsigned long)'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::FirstPhysicsManager()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:219:(.text+0x173): undefined reference to `JPH::JobSystemThreadPool::JobSystemThreadPool(unsigned int, unsigned int, int)'
/usr/bin/ld: /home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:255:(.text+0x228): undefined reference to `JPH::PhysicsSystem::Init(unsigned int, unsigned int, unsigned int, unsigned int, JPH::BroadPhaseLayerInterface const&, JPH::ObjectVsBroadPhaseLayerFilter const&, JPH::ObjectLayerPairFilter const&)'
/usr/bin/ld: /home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:280:(.text+0x378): undefined reference to `JPH::BoxShapeSettings::Create() const'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::~FirstPhysicsManager()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:306:(.text+0x835): undefined reference to `JPH::UnregisterTypes()'
/usr/bin/ld: /home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:312:(.text+0x895): undefined reference to `JPH::PhysicsSystem::~PhysicsSystem()'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::addCharacter()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:354:(.text+0x121c): undefined reference to `JPH::CharacterVirtual::CharacterVirtual(JPH::CharacterVirtualSettings const*, JPH::Vec3, JPH::Quat, unsigned long, JPH::PhysicsSystem*)'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::update()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:373:(.text+0x144b): undefined reference to `JPH::PhysicsSystem::Update(float, int, JPH::TempAllocator*, JPH::JobSystem*)'
/usr/bin/ld: /home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:376:(.text+0x171b): undefined reference to `JPH::CharacterVirtual::ExtendedUpdate(float, JPH::Vec3, JPH::CharacterVirtual::ExtendedUpdateSettings const&, JPH::BroadPhaseLayerFilter const&, JPH::ObjectLayerFilter const&, JPH::BodyFilter const&, JPH::ShapeFilter const&, JPH::TempAllocator&)'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::BoxShapeSettings::BoxShapeSettings(JPH::Vec3, float, JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/BoxShape.h:23:(.text._ZN3JPH16BoxShapeSettingsC2ENS_4Vec3EfPKNS_15PhysicsMaterialE[_ZN3JPH16BoxShapeSettingsC2ENS_4Vec3EfPKNS_15PhysicsMaterialE]+0x44): undefined reference to `vtable for JPH::BoxShapeSettings'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::CapsuleShape::CapsuleShape(float, float, JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/CapsuleShape.h:47:(.text._ZN3JPH12CapsuleShapeC2EffPKNS_15PhysicsMaterialE[_ZN3JPH12CapsuleShapeC2EffPKNS_15PhysicsMaterialE]+0x37): undefined reference to `vtable for JPH::CapsuleShape'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::CharacterVsCharacterCollisionSimple::CharacterVsCharacterCollisionSimple()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Character/CharacterVirtual.h:143:(.text._ZN3JPH35CharacterVsCharacterCollisionSimpleC2Ev[_ZN3JPH35CharacterVsCharacterCollisionSimpleC2Ev]+0x20): undefined reference to `vtable for JPH::CharacterVsCharacterCollisionSimple'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::CharacterVsCharacterCollisionSimple::~CharacterVsCharacterCollisionSimple()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Character/CharacterVirtual.h:143:(.text._ZN3JPH35CharacterVsCharacterCollisionSimpleD2Ev[_ZN3JPH35CharacterVsCharacterCollisionSimpleD2Ev]+0x17): undefined reference to `vtable for JPH::CharacterVsCharacterCollisionSimple'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::AssertFailedParamHelper(char const*, char const*, unsigned int, char const*, JPH::AssertLastParam)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Core/IssueReporting.h:26:(.text._ZN3JPH23AssertFailedParamHelperEPKcS1_jS1_NS_15AssertLastParamE[_ZN3JPH23AssertFailedParamHelperEPKcS1_jS1_NS_15AssertLastParamE]+0x1a): undefined reference to `JPH::AssertFailed'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ProfileMeasurement::ProfileMeasurement(char const*, unsigned int)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Core/Profiler.inl:49:(.text._ZN3JPH18ProfileMeasurementC2EPKcj[_ZN3JPH18ProfileMeasurementC2EPKcj]+0xaa): undefined reference to `JPH::ProfileMeasurement::sOutOfSamplesReported'
/usr/bin/ld: /home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Core/Profiler.inl:52:(.text._ZN3JPH18ProfileMeasurementC2EPKcj[_ZN3JPH18ProfileMeasurementC2EPKcj]+0xcc): undefined reference to `JPH::ProfileMeasurement::sOutOfSamplesReported'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `TLS wrapper function for JPH::ProfileThread::sInstance':
libraryJoltHelloWorld.cpp:(.text._ZTWN3JPH13ProfileThread9sInstanceE[_ZTWN3JPH13ProfileThread9sInstanceE]+0x21): undefined reference to `JPH::ProfileThread::sInstance'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::AssertFailedParamHelper(char const*, char const*, unsigned int, JPH::AssertLastParam)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Core/IssueReporting.h:25:(.text._ZN3JPH23AssertFailedParamHelperEPKcS1_jNS_15AssertLastParamE[_ZN3JPH23AssertFailedParamHelperEPKcS1_jNS_15AssertLastParamE]+0x16): undefined reference to `JPH::AssertFailed'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ConvexShapeSettings::ConvexShapeSettings(JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/ConvexShape.h:24:(.text._ZN3JPH19ConvexShapeSettingsC2EPKNS_15PhysicsMaterialE[_ZN3JPH19ConvexShapeSettingsC2EPKNS_15PhysicsMaterialE]+0x24): undefined reference to `vtable for JPH::ConvexShapeSettings'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ConvexShapeSettings::~ConvexShapeSettings()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/ConvexShape.h:17:(.text._ZN3JPH19ConvexShapeSettingsD2Ev[_ZN3JPH19ConvexShapeSettingsD2Ev]+0x17): undefined reference to `vtable for JPH::ConvexShapeSettings'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ConvexShape::ConvexShape(JPH::EShapeSubType, JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/ConvexShape.h:43:(.text._ZN3JPH11ConvexShapeC2ENS_13EShapeSubTypeEPKNS_15PhysicsMaterialE[_ZN3JPH11ConvexShapeC2ENS_13EShapeSubTypeEPKNS_15PhysicsMaterialE]+0x30): undefined reference to `vtable for JPH::ConvexShape'
collect2: error: ld returned 1 exit status
scons: *** [bin/godot.linuxbsd.editor.x86_64] Error 1
scons: building terminated because of errors.

I noticed that in Godot-Jolt, there are only one compile definition (JPH_DOUBLE_PRECISION) that is definded. Can I ignore all others defines and just put JPH_CROSS_PLATFORM_DETERMINISTIC ?

I tried to do define just JPH_CROSS_PLATFORM_DETERMINISTIC, built the Static library, but in the bind i recieve this error:

The branch with just JPH_CROSS_PLATFORM_DETERMINISTIC: https://github.com/hugarty/Jolt-Godot/tree/jolt-cross-platform-deterministic

Error

[ 95%] Compiling core/input/default_controller_mappings.gen.cpp ...
[100%] progress_finish(["progress_finish"], [])
[100%] Linking Program bin/godot.linuxbsd.editor.x86_64 ...
[100%] /usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::FirstPhysicsManager()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:198:(.text+0x65): undefined reference to `JPH::AssertFailed'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::RegisterTypes()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/RegisterTypes.h:24:(.text+0xd1): undefined reference to `JPH::RegisterTypesInternal(unsigned long)'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::FirstPhysicsManager()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:219:(.text+0x16e): undefined reference to `JPH::JobSystemThreadPool::JobSystemThreadPool(unsigned int, unsigned int, int)'
/usr/bin/ld: /home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:255:(.text+0x223): undefined reference to `JPH::PhysicsSystem::Init(unsigned int, unsigned int, unsigned int, unsigned int, JPH::BroadPhaseLayerInterface const&, JPH::ObjectVsBroadPhaseLayerFilter const&, JPH::ObjectLayerPairFilter const&)'
/usr/bin/ld: /home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:280:(.text+0x373): undefined reference to `JPH::BoxShapeSettings::Create() const'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::~FirstPhysicsManager()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:306:(.text+0x825): undefined reference to `JPH::UnregisterTypes()'
/usr/bin/ld: /home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:312:(.text+0x885): undefined reference to `JPH::PhysicsSystem::~PhysicsSystem()'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::addCharacter()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:354:(.text+0x120c): undefined reference to `JPH::CharacterVirtual::CharacterVirtual(JPH::CharacterVirtualSettings const*, JPH::Vec3, JPH::Quat, unsigned long, JPH::PhysicsSystem*)'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::update()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:373:(.text+0x143b): undefined reference to `JPH::PhysicsSystem::Update(float, int, JPH::TempAllocator*, JPH::JobSystem*)'
/usr/bin/ld: /home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Source/libraryJoltHelloWorld.cpp:376:(.text+0x170b): undefined reference to `JPH::CharacterVirtual::ExtendedUpdate(float, JPH::Vec3, JPH::CharacterVirtual::ExtendedUpdateSettings const&, JPH::BroadPhaseLayerFilter const&, JPH::ObjectLayerFilter const&, JPH::BodyFilter const&, JPH::ShapeFilter const&, JPH::TempAllocator&)'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::BoxShapeSettings::BoxShapeSettings(JPH::Vec3, float, JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/BoxShape.h:23:(.text._ZN3JPH16BoxShapeSettingsC2ENS_4Vec3EfPKNS_15PhysicsMaterialE[_ZN3JPH16BoxShapeSettingsC2ENS_4Vec3EfPKNS_15PhysicsMaterialE]+0x44): undefined reference to `vtable for JPH::BoxShapeSettings'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::CapsuleShape::CapsuleShape(float, float, JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/CapsuleShape.h:47:(.text._ZN3JPH12CapsuleShapeC2EffPKNS_15PhysicsMaterialE[_ZN3JPH12CapsuleShapeC2EffPKNS_15PhysicsMaterialE]+0x37): undefined reference to `vtable for JPH::CapsuleShape'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::CharacterVsCharacterCollisionSimple::CharacterVsCharacterCollisionSimple()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Character/CharacterVirtual.h:143:(.text._ZN3JPH35CharacterVsCharacterCollisionSimpleC2Ev[_ZN3JPH35CharacterVsCharacterCollisionSimpleC2Ev]+0x20): undefined reference to `vtable for JPH::CharacterVsCharacterCollisionSimple'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::CharacterVsCharacterCollisionSimple::~CharacterVsCharacterCollisionSimple()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Character/CharacterVirtual.h:143:(.text._ZN3JPH35CharacterVsCharacterCollisionSimpleD2Ev[_ZN3JPH35CharacterVsCharacterCollisionSimpleD2Ev]+0x17): undefined reference to `vtable for JPH::CharacterVsCharacterCollisionSimple'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::AssertFailedParamHelper(char const*, char const*, unsigned int, char const*, JPH::AssertLastParam)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Core/IssueReporting.h:26:(.text._ZN3JPH23AssertFailedParamHelperEPKcS1_jS1_NS_15AssertLastParamE[_ZN3JPH23AssertFailedParamHelperEPKcS1_jS1_NS_15AssertLastParamE]+0x1a): undefined reference to `JPH::AssertFailed'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::AssertFailedParamHelper(char const*, char const*, unsigned int, JPH::AssertLastParam)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Core/IssueReporting.h:25:(.text._ZN3JPH23AssertFailedParamHelperEPKcS1_jNS_15AssertLastParamE[_ZN3JPH23AssertFailedParamHelperEPKcS1_jNS_15AssertLastParamE]+0x16): undefined reference to `JPH::AssertFailed'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ConvexShapeSettings::ConvexShapeSettings(JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/ConvexShape.h:24:(.text._ZN3JPH19ConvexShapeSettingsC2EPKNS_15PhysicsMaterialE[_ZN3JPH19ConvexShapeSettingsC2EPKNS_15PhysicsMaterialE]+0x24): undefined reference to `vtable for JPH::ConvexShapeSettings'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ConvexShapeSettings::~ConvexShapeSettings()':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/ConvexShape.h:17:(.text._ZN3JPH19ConvexShapeSettingsD2Ev[_ZN3JPH19ConvexShapeSettingsD2Ev]+0x17): undefined reference to `vtable for JPH::ConvexShapeSettings'
/usr/bin/ld: modules/jolt_physics/libpath/libJoltStatic.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ConvexShape::ConvexShape(JPH::EShapeSubType, JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/GITHUB_HELP/Jolt-Godot/JoltPhysicsHelloWorld-main/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/ConvexShape.h:43:(.text._ZN3JPH11ConvexShapeC2ENS_13EShapeSubTypeEPKNS_15PhysicsMaterialE[_ZN3JPH11ConvexShapeC2ENS_13EShapeSubTypeEPKNS_15PhysicsMaterialE]+0x30): undefined reference to `vtable for JPH::ConvexShape'
collect2: error: ld returned 1 exit status
scons: *** [bin/godot.linuxbsd.editor.x86_64] Error 1
scons: building terminated because of errors.

I was able to bind a simple library that just do sum (Summator). And you can see the module.

But for Jolt I need some help to unblock my path. I believe that the error is in the SCsub.

Do you have some tip?
Or a technique/strategy where I can start to have a solution?

Answered by jrouwe

Jan 18, 2025

To me it looks like a random collection of errors. If I had to guess then you're not linking against the Jolt library at all (or maybe the main executable is linking against Jolt and the extension dll, if there's such a thing, not).

If I scan through your SCsub file then it appears you're compiling Jolt through env_godot_jolt.add_source_files(thirdparty_obj, thirdparty_sources) but I don't see how you attempt to compile godotJolt.cpp, is it through env.Append(LIBS=['JoltStatic'])? If this is the case then libJoltStatic.a will not contain the Jolt symbols. You made the lib dependent on libJolt.a in cmake but that doesn't mean the symbols are going to get merged into libJoltStatic.a I think.

…

View full answer

jrouwe · 2025-01-18T21:44:36Z

jrouwe
Jan 18, 2025
Maintainer

To me it looks like a random collection of errors. If I had to guess then you're not linking against the Jolt library at all (or maybe the main executable is linking against Jolt and the extension dll, if there's such a thing, not).

If I scan through your SCsub file then it appears you're compiling Jolt through env_godot_jolt.add_source_files(thirdparty_obj, thirdparty_sources) but I don't see how you attempt to compile godotJolt.cpp, is it through env.Append(LIBS=['JoltStatic'])? If this is the case then libJoltStatic.a will not contain the Jolt symbols. You made the lib dependent on libJolt.a in cmake but that doesn't mean the symbols are going to get merged into libJoltStatic.a I think.

Why don't you add godotJolt.cpp to thirdparty_sources to compile everything with the same settings. Compiling one part of Jolt through scons and the other part through cmake complicates things greatly.

Can I ignore all others defines and just put JPH_CROSS_PLATFORM_DETERMINISTIC ?

Adding only JPH_CROSS_PLATFORM_DETERMINISTIC should work for Jolt, but as far as I understand godot is not deterministic at all. So if the slightest difference in input from godot is passed to Jolt, the whole system will not be deterministic. E.g. if you call a godot function that uses a C library function like sin and pass it on to Jolt then you already broke determinism.

2 replies

hugarty Jan 20, 2025
Author

I built a new branch and removed the static library.

The module and the Jolt are built using just Scons now.

The error now changed a little bit:

Error

Now we have those new lines:

modules/jolt_physics/source/libraryJoltHelloWorld.cpp:202:9: error: 'JPH::JPH' has not been declared
  202 |         JPH::Factory::sInstance = new JPH::Factory();
      |         ^~~
scons: *** [modules/jolt_physics/source/libraryJoltHelloWorld.linuxbsd.editor.x86_64.o] Error 1

Full Error:

[ 96%] Linking Program bin/godot.linuxbsd.editor.x86_64 ...
[ 98%] Compiling modules/jolt_physics/source/libraryJoltHelloWorld.cpp ...
[ 99%] progress_finish(["progress_finish"], [])
[100%] modules/jolt_physics/source/libraryJoltHelloWorld.cpp: In constructor 'FirstPhysicsManager::FirstPhysicsManager()':
modules/jolt_physics/source/libraryJoltHelloWorld.cpp:202:9: error: 'JPH::JPH' has not been declared
  202 |         JPH::Factory::sInstance = new JPH::Factory();
      |         ^~~
scons: *** [modules/jolt_physics/source/libraryJoltHelloWorld.linuxbsd.editor.x86_64.o] Error 1
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::FirstPhysicsManager()':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Source/libraryJoltHelloWorld.cpp:198:(.text+0x65): undefined reference to `JPH::AssertFailed'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::RegisterTypes()':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/RegisterTypes.h:24:(.text+0xd6): undefined reference to `JPH::RegisterTypesInternal(unsigned long)'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::FirstPhysicsManager()':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Source/libraryJoltHelloWorld.cpp:219:(.text+0x173): undefined reference to `JPH::JobSystemThreadPool::JobSystemThreadPool(unsigned int, unsigned int, int)'
/usr/bin/ld: /home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Source/libraryJoltHelloWorld.cpp:255:(.text+0x228): undefined reference to `JPH::PhysicsSystem::Init(unsigned int, unsigned int, unsigned int, unsigned int, JPH::BroadPhaseLayerInterface const&, JPH::ObjectVsBroadPhaseLayerFilter const&, JPH::ObjectLayerPairFilter const&)'
/usr/bin/ld: /home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Source/libraryJoltHelloWorld.cpp:280:(.text+0x378): undefined reference to `JPH::BoxShapeSettings::Create() const'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::~FirstPhysicsManager()':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Source/libraryJoltHelloWorld.cpp:306:(.text+0x835): undefined reference to `JPH::UnregisterTypes()'
/usr/bin/ld: /home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Source/libraryJoltHelloWorld.cpp:312:(.text+0x895): undefined reference to `JPH::PhysicsSystem::~PhysicsSystem()'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::addCharacter()':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Source/libraryJoltHelloWorld.cpp:354:(.text+0x1222): undefined reference to `JPH::CharacterVirtual::CharacterVirtual(JPH::CharacterVirtualSettings const*, JPH::Vec3, JPH::Quat, unsigned long, JPH::PhysicsSystem*)'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `FirstPhysicsManager::update()':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Source/libraryJoltHelloWorld.cpp:373:(.text+0x145b): undefined reference to `JPH::PhysicsSystem::Update(float, int, JPH::TempAllocator*, JPH::JobSystem*)'
/usr/bin/ld: /home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Source/libraryJoltHelloWorld.cpp:376:(.text+0x172b): undefined reference to `JPH::CharacterVirtual::ExtendedUpdate(float, JPH::Vec3, JPH::CharacterVirtual::ExtendedUpdateSettings const&, JPH::BroadPhaseLayerFilter const&, JPH::ObjectLayerFilter const&, JPH::BodyFilter const&, JPH::ShapeFilter const&, JPH::TempAllocator&)'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::BoxShapeSettings::BoxShapeSettings(JPH::Vec3, float, JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/BoxShape.h:23:(.text._ZN3JPH16BoxShapeSettingsC2ENS_4Vec3EfPKNS_15PhysicsMaterialE[_ZN3JPH16BoxShapeSettingsC2ENS_4Vec3EfPKNS_15PhysicsMaterialE]+0x44): undefined reference to `vtable for JPH::BoxShapeSettings'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::CapsuleShape::CapsuleShape(float, float, JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/CapsuleShape.h:47:(.text._ZN3JPH12CapsuleShapeC2EffPKNS_15PhysicsMaterialE[_ZN3JPH12CapsuleShapeC2EffPKNS_15PhysicsMaterialE]+0x37): undefined reference to `vtable for JPH::CapsuleShape'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::CharacterVsCharacterCollisionSimple::CharacterVsCharacterCollisionSimple()':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Character/CharacterVirtual.h:143:(.text._ZN3JPH35CharacterVsCharacterCollisionSimpleC2Ev[_ZN3JPH35CharacterVsCharacterCollisionSimpleC2Ev]+0x20): undefined reference to `vtable for JPH::CharacterVsCharacterCollisionSimple'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::CharacterVsCharacterCollisionSimple::~CharacterVsCharacterCollisionSimple()':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Character/CharacterVirtual.h:143:(.text._ZN3JPH35CharacterVsCharacterCollisionSimpleD2Ev[_ZN3JPH35CharacterVsCharacterCollisionSimpleD2Ev]+0x17): undefined reference to `vtable for JPH::CharacterVsCharacterCollisionSimple'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::AssertFailedParamHelper(char const*, char const*, unsigned int, char const*, JPH::AssertLastParam)':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Core/IssueReporting.h:26:(.text._ZN3JPH23AssertFailedParamHelperEPKcS1_jS1_NS_15AssertLastParamE[_ZN3JPH23AssertFailedParamHelperEPKcS1_jS1_NS_15AssertLastParamE]+0x1a): undefined reference to `JPH::AssertFailed'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ProfileMeasurement::ProfileMeasurement(char const*, unsigned int)':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Core/Profiler.inl:49:(.text._ZN3JPH18ProfileMeasurementC2EPKcj[_ZN3JPH18ProfileMeasurementC2EPKcj]+0xaa): undefined reference to `JPH::ProfileMeasurement::sOutOfSamplesReported'
/usr/bin/ld: /home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Core/Profiler.inl:52:(.text._ZN3JPH18ProfileMeasurementC2EPKcj[_ZN3JPH18ProfileMeasurementC2EPKcj]+0xcc): undefined reference to `JPH::ProfileMeasurement::sOutOfSamplesReported'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `TLS wrapper function for JPH::ProfileThread::sInstance':
libraryJoltHelloWorld.cpp:(.text._ZTWN3JPH13ProfileThread9sInstanceE[_ZTWN3JPH13ProfileThread9sInstanceE]+0x21): undefined reference to `JPH::ProfileThread::sInstance'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::AssertFailedParamHelper(char const*, char const*, unsigned int, JPH::AssertLastParam)':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Core/IssueReporting.h:25:(.text._ZN3JPH23AssertFailedParamHelperEPKcS1_jNS_15AssertLastParamE[_ZN3JPH23AssertFailedParamHelperEPKcS1_jNS_15AssertLastParamE]+0x16): undefined reference to `JPH::AssertFailed'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ConvexShapeSettings::ConvexShapeSettings(JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/ConvexShape.h:24:(.text._ZN3JPH19ConvexShapeSettingsC2EPKNS_15PhysicsMaterialE[_ZN3JPH19ConvexShapeSettingsC2EPKNS_15PhysicsMaterialE]+0x24): undefined reference to `vtable for JPH::ConvexShapeSettings'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ConvexShapeSettings::~ConvexShapeSettings()':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/ConvexShape.h:17:(.text._ZN3JPH19ConvexShapeSettingsD2Ev[_ZN3JPH19ConvexShapeSettingsD2Ev]+0x17): undefined reference to `vtable for JPH::ConvexShapeSettings'
/usr/bin/ld: modules/mmo/libpath/libBRINCA_LIB.a(libraryJoltHelloWorld.cpp.o): in function `JPH::ConvexShape::ConvexShape(JPH::EShapeSubType, JPH::PhysicsMaterial const*)':
/home/hpca/xdev/development/Jolt+opengl/Jolt-glfw3-glad/Build/Linux_Debug/_deps/joltphysics-src/Build/../Jolt/Physics/Collision/Shape/ConvexShape.h:43:(.text._ZN3JPH11ConvexShapeC2ENS_13EShapeSubTypeEPKNS_15PhysicsMaterialE[_ZN3JPH11ConvexShapeC2ENS_13EShapeSubTypeEPKNS_15PhysicsMaterialE]+0x30): undefined reference to `vtable for JPH::ConvexShape'
collect2: error: ld returned 1 exit status
scons: *** [bin/godot.linuxbsd.editor.x86_64] Error 1
scons: building terminated because of errors.
[Time elapsed: 00:00:16.97]

UPDATE:

A friend added this line to the SCsub and worked.

env_jolt.add_source_files(env.modules_sources, "source/libraryJoltHelloWorld.cpp")

Seems like scons compiled the class but didn't link it correctly.

My objective is to put a wall between godot and Jolt. All the communication between the two will pass there.
This will secure that the DETERMINISM will work.

Do you consider this approach reasonable?
Do you believe it will perform well, or only doing it to see what happens?

jrouwe Jan 20, 2025
Maintainer

Do you consider this approach reasonable?

I really can't predict if that will work or not. Depends on how solid that wall is.

Do you believe it will perform well, or only doing it to see what happens?

I can't predict that either.

Provide feedback

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Godot + Jolt, but not the extension. #1464

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Godot + Jolt, but not the extension. #1464

hugarty Jan 18, 2025

Replies: 1 comment · 2 replies

jrouwe Jan 18, 2025 Maintainer

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jrouwe Jan 20, 2025 Maintainer

hugarty
Jan 18, 2025

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jrouwe
Jan 18, 2025
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hugarty Jan 20, 2025
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