first try with cmake and imgui

third-party/CMakeLists.txt

@@ -0,0 +1,38 @@
+
+
+#=================== SDL3 ===================
+
+set(SDL3_DIR ${CMAKE_CURRENT_SOURCE_DIR}/SDL)
+add_subdirectory(${SDL3_DIR})
+
+#=================== IMGUI ===================
+
+set(IMGUI_DIR ${CMAKE_CURRENT_SOURCE_DIR}/imgui)
+add_library(IMGUI STATIC)
+
+target_sources( IMGUI
+                PRIVATE
+                    ${IMGUI_DIR}/imgui_demo.cpp
+                    ${IMGUI_DIR}/imgui_draw.cpp
+                    ${IMGUI_DIR}/imgui_tables.cpp
+                    ${IMGUI_DIR}/imgui_widgets.cpp
+                    ${IMGUI_DIR}/imgui.cpp
+
+                PRIVATE
+                    ${IMGUI_DIR}/backends/imgui_impl_opengl3.cpp
+                    ${IMGUI_DIR}/backends/imgui_impl_sdl3.cpp
+                )
+
+target_include_directories( IMGUI
+                            PUBLIC ${IMGUI_DIR}
+                            PUBLIC ${IMGUI_DIR}/backends
+                            PUBLIC ${SDL3_DIR}/include
+                            )
+
+find_package(OpenGL REQUIRED)
+target_link_libraries(IMGUI PUBLIC ${OPENGL_LIBRARIES})
+
+
+target_link_libraries(IMGUI PUBLIC SDL3-shared ${CMAKE_DL_LIBS})
+
+