I'm making a program that uses OpenGL and SDL2 in C and wanted to use Cimgui as my gui library however, when trying to include the correct backends I'm getting these linker errors:

main.c:104:5: warning: implicit declaration of function 'ImGui_ImplSDL2_InitForOpenGL' [-Wimplicit-function-declaration]
  104 |     ImGui_ImplSDL2_InitForOpenGL(window, context);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
main.c:105:5: warning: implicit declaration of function 'ImGui_ImplOpenGL3_Init' [-Wimplicit-function-declaration]
  105 |     ImGui_ImplOpenGL3_Init(glsl_version);


          |     ^~~~~~~~~~~~~~~~~~~~~~

C:/TDM-GCC-64/bin/../lib/gcc/x86_64-w64-mingw32/10.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: ./main.o:main.c:(.text+0x386): undefined reference to `ImGui_ImplSDL2_InitForOpenGL'
C:/TDM-GCC-64/bin/../lib/gcc/x86_64-w64-mingw32/10.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: ./main.o:main.c:(.text+0x395): undefined reference to `ImGui_ImplOpenGL3_Init'
collect2.exe: error: ld returned 1 exit status
make: *** [renderer.exe] Error 1

Here is my makefile (I'm a beginner here so if theres anything stupid going on apologies):

# Compiler definitions
CC = gcc
CXX = g++

# Compiler flags
CFLAGS = -I"C:/Cimgui" -I"C:/Cimgui/imgui" -I"C:/Cimgui" -I"C:/Cimgui/imgui/backends" -I"C:/SDL2/include" -I"C:/cglm-master/include" -I"C:/glew-2.1.0/include" \
         -Wall -DGLEW_STATIC -DSDL_STATIC \
         -DIMGUI_IMPL_OPENGL_LOADER_GLEW -DIMGUI_DISABLE_OBSOLETE_FUNCTIONS=1
CXXFLAGS = $(CFLAGS)  # Same flags for C++ files

# Linker flags
LDFLAGS = -L"C:/Cimgui/build" -L"C:/cglm-master/build" -L"C:/glew-2.1.0/lib/Release/x64" -L"C:/SDL2/lib" \
          -Wl,-Bstatic -lSDL2main -lSDL2 -lcglm -lglew32 \
          -Wl,-Bdynamic -lopengl32 -ldxguid \
          -lmingw32 -mwindows -lm -ldinput8 -ldxguid -ldxerr8 \
          -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 \
          -lshell32 -lversion -luuid -static-libgcc \
          -lsetupapi -lcfgmgr32 \
          -lcimgui 

# Target executable
TARGET = renderer.exe

# Define source files
SOURCES = ./main.c
IMGUI_SOURCES = \
    C:/Cimgui/cimgui.cpp \
    C:/Cimgui/cimgui_impl.cpp \
    C:/Cimgui/imgui/imgui.cpp \
    C:/Cimgui/imgui/imgui_draw.cpp \
    C:/Cimgui/imgui/imgui_widgets.cpp \
    C:/Cimgui/imgui/imgui_tables.cpp \
    C:/Cimgui/imgui/imgui_demo.cpp \
    C:/Cimgui/imgui/backends/imgui_impl_sdl2.cpp \
    C:/Cimgui/imgui/backends/imgui_impl_opengl3.cpp

# Convert sources to object files
OBJECTS = $(SOURCES:.c=.o) $(IMGUI_SOURCES:.cpp=.o)

# Default target
all: $(TARGET)

# Link all object files into the executable
$(TARGET): $(OBJECTS)
    echo "Objects to link: $(OBJECTS)"
    $(CXX) $(OBJECTS) -o $(TARGET) $(LDFLAGS)

%.o: %.c
    $(CC) $(CFLAGS) -c $< -o $@

%.o: %.cpp
    $(CXX) $(CXXFLAGS) -c $< -o $@

# Run the program
run:
    ./$(TARGET)

# Clean up
clean:
    rm -f $(OBJECTS) $(TARGET)

.PHONY: all clean run

I tried to follow the example CMakeLists.txt thats included with the sdl_opengl cimgui example project as much as possible but for some reason it cannot find these methods. For reference here is my main.c file:

#include <stdio.h>
#define SDL_MAIN_HANDLED
#include <SDL.h>
#include <GL/glew.h>
#include <stdbool.h>
#include <cglm/cglm.h>
#define CIMGUI_DEFINE_ENUMS_AND_STRUCTS
#include <cimgui.h>
#include <cimgui_impl.h>
#include <windows.h>
static int window_width = 640;
static int window_height = 480;


///////////////////////////////////////////////////////////////////////////////
// Global variables for execution status and game loop
///////////////////////////////////////////////////////////////////////////////
static SDL_Window* window = NULL;
SDL_GLContext context = NULL;
static SDL_Renderer* renderer = NULL;
float delta_time = 0;
bool is_running = false;
float previous_frame_time;

 
//set docking
ImGuiIO* ioptr;
const char* glsl_version = "#version 130";
 
///////////////////////////////////////////////////////////////////////////////
// Setup function to initialize variables and game objects
///////////////////////////////////////////////////////////////////////////////
int setup(void) {
      if(SDL_Init(SDL_INIT_EVERYTHING) != 0){
        fprintf(stderr, "Error initializing SDL window");
        return false;
    }

    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);

    SDL_DisplayMode displayMode;

    SDL_GetCurrentDisplayMode(0, &displayMode);

    // int full_screen_width = displayMode.w;
    // int full_screen_height = displayMode.h;

    vec3 v = {1.0f, 2.0f, 3.0f};
    printf("current vec3: (%f, %f, %f)", v[0],v[1],v[2]);


    // //TODO create SDL window
    window = SDL_CreateWindow(
        "The window into Jamie's madness",
        SDL_WINDOWPOS_CENTERED,
        SDL_WINDOWPOS_CENTERED,
        window_width,
        window_height,
        SDL_WINDOW_OPENGL
    );

    if(!window){
        fprintf(stderr, "Error creating SDL window");
        return false;
    }

    //TODO create SDL Renderer
    renderer = SDL_CreateRenderer(window,-1, 0);

    if(!renderer){
        fprintf(stderr, "Error creating SDL renderer");
        return false;
    }

    SDL_SetWindowBordered(window,SDL_WINDOWPOS_CENTERED);
    SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 5 );
    SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 5 );
    SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, 5 );
    SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 16 );
    SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
    context = SDL_GL_CreateContext(window);
    SDL_GL_MakeCurrent(window,context);
    

    glewExperimental = GL_TRUE;
    glewInit();
    
    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);

     // setup imgui
    igCreateContext(NULL);
    ioptr = igGetIO();
    ioptr->ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;       // Enable Keyboard Controls
    //ioptr->ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
    #ifdef IMGUI_HAS_DOCK
        ioptr->ConfigFlags |= ImGuiConfigFlags_DockingEnable;           // Enable Docking
        ioptr->ConfigFlags |= ImGuiConfigFlags_ViewportsEnable;         // Enable Multi-Viewport / Platform Windows
    #endif

    ImGui_ImplSDL2_InitForOpenGL(window, context);
    ImGui_ImplOpenGL3_Init(glsl_version);

    igStyleColorsDark(NULL);

    return true; 
}
int main(int argc, char* args[]){
    setup();
    return 0;
}