switch to linux-only setup

CMakeLists.txt

@@ -0,0 +1,42 @@
+cmake_minimum_required(VERSION 3.22)
+
+project(kge)
+
+find_package(SDL2 REQUIRED)
+find_package(OpenGL REQUIRED)
+
+add_compile_options("-Wall" "-Wextra" "-Werror")
+add_definitions(-DIMGUI_ENABLE_FREETYPE)
+
+add_library(imgui STATIC
+        # Main Imgui files
+        ext/imgui/imgui.cpp
+        ext/imgui/imgui.h
+        ext/imgui/imgui_draw.cpp
+        ext/imgui/imgui_tables.cpp
+        ext/imgui/imgui_widgets.cpp
+        ext/imgui/imgui_demo.cpp
+
+        ext/imgui/backends/imgui_impl_sdl2.cpp
+        ext/imgui/backends/imgui_impl_sdl2.h
+        ext/imgui/backends/imgui_impl_opengl3.cpp
+        ext/imgui/backends/imgui_impl_opengl3.h)
+add_library(imgui::imgui ALIAS imgui)
+target_link_libraries(imgui
+    PUBLIC
+    OpenGL::GL
+    $<TARGET_NAME_IF_EXISTS:SDL2::SDL2main>
+    $<IF:$<TARGET_EXISTS:SDL2::SDL2>,SDL2::SDL2,SDL2::SDL2-static>
+)
+target_include_directories(imgui PUBLIC
+	ext/imgui/
+	ext/imgui/backends/
+)
+
+include_directories(ext/)
+
+add_executable(kge
+	kge.cc
+)
+target_link_libraries(kge imgui)
+