Starting work on a buffer type.

CMakeLists.txt

@@ -6,10 +6,25 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 find_package(SDL2 REQUIRED)
 find_package(OpenGL REQUIRED)
-find_package(Freetype REQUIRED)
+find_package(Freetype)
+if (DEFINED FREETYPE_INCLUDE_DIRS)
+	add_definitions(-DIMGUI_ENABLE_FREETYPE)
+	set(FREETYPE_SOURCES
+		ext/imgui/misc/freetype/imgui_freetype.cpp
+		ext/imgui/misc/freetype/imgui_freetype.h)
+endif()
+
+if(MSVC)
+	add_compile_options("/W4" "$<$<CONFIG:RELEASE>:/O2>")
+else()
+	add_compile_options("-Wall" "-Wextra" "-Werror" "$<$<CONFIG:RELEASE>:-O3>")
+	if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+		add_compile_options("-stdlib=libc++")
+	else()
+		# nothing special for gcc at the moment
+	endif()
+endif()
 
-add_compile_options("-Wall" "-Wextra" "-Werror")
-add_definitions(-DIMGUI_ENABLE_FREETYPE)
 
 add_library(imgui STATIC
         # Main Imgui files
@@ -25,25 +40,26 @@ add_library(imgui STATIC
         ext/imgui/backends/imgui_impl_opengl3.cpp
         ext/imgui/backends/imgui_impl_opengl3.h
 
-        ext/imgui/misc/freetype/imgui_freetype.cpp
-        ext/imgui/misc/freetype/imgui_freetype.h)
+	$<IF:$<TARGET_EXISTS:Freetype::Freetype>,${FREETYPE_SOURCES},>)
 add_library(imgui::imgui ALIAS imgui)
 target_link_libraries(imgui
         PUBLIC
         OpenGL::GL
+	$<IF:$<TARGET_EXISTS:Freetype::Freetype>,Freetype::Freetype,>
         $<TARGET_NAME_IF_EXISTS:SDL2::SDL2main>
-        $<IF:$<TARGET_EXISTS:SDL2::SDL2>,SDL2::SDL2,SDL2::SDL2-static>
-        Freetype::Freetype)
+        $<IF:$<TARGET_EXISTS:SDL2::SDL2>,SDL2::SDL2,SDL2::SDL2-static>)
 target_include_directories(imgui PUBLIC
         ext/imgui/
         ext/imgui/backends/
         ext/imgui/misc/freetype
-        ${FREETYPE_INCLUDE_DIRS})
+	$<IF:$<TARGET_EXISTS:Freetype::Freetype>,${FREETYPE_INCLUDE_DIRS},>)
 
 include_directories(ext/ ${SDL2_INCLUDE_DIRS})
 
 add_executable(kge
         kge.cc
-		)
+	Buffer.cc
+	Buffer.h
+)
 target_link_libraries(kge imgui)