glut/opengl2 linking error

[theJavin]

I'm having linking errors while integrating Imgui into an existing project based on legacy OpenGL and glut. The project is a Cuda simulation that uses OpenGL for visualization and doesn't have make files at this time. Example output:

/usr/bin/ld: /tmp/tmpxft_00004931_00000000-10_SVT.o: in function drawPicture()': tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0x833d): undefined reference to ImGui_ImplOpenGL2_NewFrame()'
/usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0x8342): undefined reference to ImGui_ImplGLUT_NewFrame()' /usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0x8347): undefined reference to ImGui::NewFrame()'
/usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0x834c): undefined reference to ImGui::GetIO()' /usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0x8367): undefined reference to ImGui::ShowDemoWindow(bool*)'
/usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0x836c): undefined reference to ImGui::Render()' /usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0x8371): undefined reference to ImGui::GetDrawData()'
/usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0x8379): undefined reference to ImGui_ImplOpenGL2_RenderDrawData(ImDrawData*)' /usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0x8f76): undefined reference to ImGui::GetDrawData()'
/usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0x8f7e): undefined reference to ImGui_ImplOpenGL2_RenderDrawData(ImDrawData*)' /usr/bin/ld: /tmp/tmpxft_00004931_00000000-10_SVT.o: in function main':
tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0xb402): undefined reference to ImGui::DebugCheckVersionAndDataLayout(char const*, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long)' /usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0xb410): undefined reference to ImGui::CreateContext(ImFontAtlas*)'
/usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0xb415): undefined reference to ImGui::GetIO()' /usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0xb445): undefined reference to ImGui::StyleColorsDark(ImGuiStyle*)'
/usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0xb44a): undefined reference to ImGui_ImplGLUT_Init()' /usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0xb44f): undefined reference to ImGui_ImplOpenGL2_Init()'
/usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0xb489): undefined reference to ImGui_ImplOpenGL2_Shutdown()' /usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0xb48e): undefined reference to ImGui_ImplGLUT_Shutdown()'
/usr/bin/ld: tmpxft_00004931_00000000-5_SVT.cudafe1.cpp:(.text+0xb498): undefined reference to `ImGui::DestroyContext(ImGuiContext*)'
collect2: error: ld returned 1 exit status

I apologize if this is a really naive question but I'm new to Imgui and am working with an existing program I do research with.

I'll greatly appreciate any help or advice.

[ocornut]

You are not linking against imgui source files and backend files.