100s-1000s of "multiple definition of '..'"

[Sammyueru]

I'm using Mingw-w64 through msys2 and am attempting to use the SDL2 backend (SDL2 works perfectly fine).
I've been attempting for hours to get this to work with a makefile.
When linking I get 100s or even 1000s of these errors:
Makefile link: https://github.com/Sammyueru/SammYT/blob/5eb5976ef0974ae722c6ace670932e24dd18fe3d/makefile

C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_impl_sdlrenderer2.o:imgui_draw.cpp:(.text+0x21170): multiple definition of `ImFont::FindGlyph(unsigned short) const'; C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_draw.o:imgui_draw.cpp:(.text+0x21170): first defined here
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_impl_sdlrenderer2.o:imgui_draw.cpp:(.text+0x211ec): multiple definition of `ImFont::FindGlyphNoFallback(unsigned short) const'; C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_draw.o:imgui_draw.cpp:(.text+0x211ec): first defined here
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_impl_sdlrenderer2.o:imgui_draw.cpp:(.text+0x212c2): multiple definition of `ImFont::CalcWordWrapPositionA(float, char const*, char const*, float) const'; C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_draw.o:imgui_draw.cpp:(.text+0x212c2): first defined here
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_impl_sdlrenderer2.o:imgui_draw.cpp:(.text+0x2156e): multiple definition of `ImFont::CalcTextSizeA(float, float, float, char const*, char const*, char const**) const'; C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_draw.o:imgui_draw.cpp:(.text+0x2156e): first defined here
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_impl_sdlrenderer2.o:imgui_draw.cpp:(.text+0x21816): multiple definition of `ImFont::RenderChar(ImDrawList*, float, ImVec2 const&, unsigned int, unsigned short) const'; C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_draw.o:imgui_draw.cpp:(.text+0x21816): first defined here
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_impl_sdlrenderer2.o:imgui_draw.cpp:(.text+0x219fa): multiple definition of `ImFont::RenderText(ImDrawList*, float, ImVec2 const&, unsigned int, ImVec4 const&, char const*, char const*, float, bool) const'; C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_draw.o:imgui_draw.cpp:(.text+0x219fa): first defined here
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_impl_sdlrenderer2.o:imgui_draw.cpp:(.text+0x223ed): multiple definition of `ImGui::RenderArrow(ImDrawList*, ImVec2, unsigned int, int, float)'; C:/Users/Owner/OneDrive/Programming/SammYT/shared/inc/imgui/src/imgui_draw.o:imgui_draw.cpp:(.text+0x223ed): first defined here
<More of the multiple definition of 'blank definition'>

Does anyone know how to fix this I can't get it to work for the life of me.
Thanks in advance.