lnk2001 error in VS trying to use the Bullet physics library - c++

Question

I'm new to C++, Visual Studio (2019) and Bullet (2.89).
I've been tying to build the Hello_World.cpp from Bullet for the past few days but I'm stuck on these 5 linking errors:
1>Hello_World.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall btCollisionShape::getBoundingSphere(class btVector3 &,float &)const " (?getBoundingSphere#btCollisionShape##UBEXAAVbtVector3##AAM#Z)
1>Hello_World.obj : error LNK2001: unresolved external symbol "public: virtual float __thiscall btCollisionShape::getAngularMotionDisc(void)const " (?getAngularMotionDisc#btCollisionShape##UBEMXZ)
1>Hello_World.obj : error LNK2001: unresolved external symbol "public: virtual float __thiscall btCollisionShape::getContactBreakingThreshold(float)const " (?getContactBreakingThreshold#btCollisionShape##UBEMM#Z)
1>Hello_World.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall btConvexShape::project(class btTransform const &,class btVector3 const &,float &,float &,class btVector3 &,class btVector3 &)const " (?project#btConvexShape##UBEXABVbtTransform##ABVbtVector3##AAM2AAV3#3#Z)
1>Hello_World.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall btSphereShape::calculateLocalInertia(float,class btVector3 &)const " (?calculateLocalInertia#btSphereShape##UBEXMAAVbtVector3###Z)
There are other people who had this or a similar problem but got no answer or it didn't work for me.
setup:
I used premake to set up the VS solution, Bullet is organized in static Libraries (as projects with source code that gets compiled to lib files) and I am now trying to link them with an application-project.
all projects are using static linking (for debug).
I've referenced all bullet projects to my project.
I've even staticly linked to the lib files from bullet (and the linker can apparently see these files, I even tried giving the absolute path)
As far as I can tell the functions exist and have the same signature in the .cpp and .h files
If you need more details let me know.
(One lead I possibly got is something about different bt_double_precision? But that might not be it and the only think I could find was floating point model using different precision. But making that the same didn't do anything)
Thanks in advance!
EDIT:
I don't think this answer applies to me
What is an undefined reference/unresolved external symbol error and how do I fix it?
EDIT:
Maybe worth mentioning: The file structure of the project is really weird (dictated by premake):
solution and project files are in: bullet3-2.89\build3\vs2010
high level header files(these are the ones used by Hello_World that include other headers): bullet3-2.89\src
source and header files are subdirectories of bullet3-2.89\src
libraries: bullet3-2.89\bin
but all headers use the correct relative paths in their include and I have set the project's include and library directories to those locations

Answer 1

I found a workaround. Just gonna hijack one of the example projects from Bullet and use that instead. They seem to be better at VS settings than me :D
Anyway, thanks for your suggestions.

Answer 2

Had the same issue where just a few of the functions didn't link.
This is most likely due to the Bullet library being built with BT_USE_DOUBLE_PRECISION, meaning all btScaler will be of type double.
But the library is included without BT_USE_DOUBLE_PRECISION, meaning the program will try to link with the float versions of the functions.
But they don't exists since the built version uses doubles.