Okay, forget all that. Generating an output folder was stupid.

.gitignore

@@ -3,7 +3,8 @@
 
 # Misc
 /obj
-/build
+/build_en
+/build_jp
 *.dat
 *.rec
 build.7z

CMakeLists.txt

@@ -220,11 +220,9 @@ set(RESOURCES
 
 # Handle options
 if (JAPANESE)
-	set(FILES_DIR "res/files_jp")
 	list(APPEND RESOURCES "BITMAP/PIXEL_JP.bmp")
 	target_compile_definitions(CSE2 PRIVATE JAPANESE)
 else()
-	set(FILES_DIR "res/files_en")
 	list(APPEND RESOURCES "BITMAP/PIXEL.bmp")
 endif()
 
@@ -242,7 +240,7 @@ endif()
 
 # Make some tweaks if we're targetting Windows
 if (WIN32)
-	target_sources(CSE2 PRIVATE "res/resources/ICON/ICON.rc")
+	target_sources(CSE2 PRIVATE "res/ICON/ICON.rc")
 	target_compile_definitions(CSE2 PRIVATE WINDOWS)
 	set_target_properties(CSE2 PROPERTIES WIN32_EXECUTABLE YES)	# Disable the console window
 else()
@@ -252,7 +250,7 @@ endif()
 # Magic to convert resources to header files
 add_executable(bin2h src/misc/bin2h.c)
 foreach(FILENAME IN LISTS RESOURCES)
-	set(IN_DIR "${CMAKE_CURRENT_SOURCE_DIR}/res/resources")
+	set(IN_DIR "${CMAKE_CURRENT_SOURCE_DIR}/res")
 	set(OUT_DIR "${CMAKE_CURRENT_SOURCE_DIR}/src/Resource")
 	get_filename_component(DIRECTORY "${FILENAME}" DIRECTORY)
 	add_custom_command(
@@ -274,10 +272,6 @@ if (NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
 endif()
 
 if (MSVC)
-	if (STATIC)
-		message(STATUS "STATIC option doesn't affect MSVC builds")
-	endif()
-
 	# Find dependencies
 
 	# In MSVC we just use our own provided copy of SDL2 and FreeType
@@ -337,20 +331,3 @@ endif()
 target_include_directories(CSE2 PRIVATE ${SDL2_INCLUDE_DIRS} ${FREETYPE_INCLUDE_DIRS})
 target_compile_options(CSE2 PRIVATE ${SDL2_CFLAGS_OTHER} ${FREETYPE_CFLAGS_OTHER})
 target_link_libraries(CSE2 ${SDL2_LIBRARIES} ${FREETYPE_LIBRARIES})
-
-# Set up the output directory
-
-# Copy the files to the output directory
-file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/${FILES_DIR}/" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/cavestory")
-
-# Send the Release executable to the directory
-set_target_properties(CSE2 PROPERTIES RUNTIME_OUTPUT_DIRECTORY_RELEASE "${CMAKE_CURRENT_BINARY_DIR}/cavestory")
-
-# On MSVC, copy across SDL2.dll as well
-if (MSVC)
-	if (CMAKE_CL_64)
-		file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/msvc/SDL2/lib/x64/SDL2.dll" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/cavestory")
-	else()
-		file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/msvc/SDL2/lib/x86/SDL2.dll" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/cavestory")
-	endif()
-endif()

Makefile

@@ -8,6 +8,8 @@ else
 endif
 
 ifeq ($(JAPANESE), 1)
+	BUILD_DIR = build_jp
+
 	CXXFLAGS += -DJAPANESE
 
 	ifeq ($(RELEASE), 1)
@@ -15,6 +17,8 @@ ifeq ($(JAPANESE), 1)
 	else
 		FILENAME_DEF = debugjp
 	endif
+else
+	BUILD_DIR = build_en
 endif
 
 FILENAME ?= $(FILENAME_DEF)
@@ -200,19 +204,9 @@ ifeq ($(WINDOWS), 1)
 	OBJECTS += obj/$(FILENAME)/win_icon.o
 endif
 
-all: build
+all: $(BUILD_DIR)/$(FILENAME)
 
-ifeq ($(JAPANESE), 1)
-build: res/files_jp obj/$(FILENAME)/$(FILENAME)
-else
-build: res/files_en obj/$(FILENAME)/$(FILENAME)
-endif
-	@mkdir -p $(@D)
-	@echo "Copying files to 'build'"
-	@cp -r $< $@
-	@cp obj/$(FILENAME)/$(FILENAME) $@
-
-obj/$(FILENAME)/$(FILENAME): $(OBJECTS)
+$(BUILD_DIR)/$(FILENAME): $(OBJECTS)
 	@mkdir -p $(@D)
 	@echo Linking
 	@$(CXX) $(CXXFLAGS) $(LDFLAGS) $^ -o $@ $(LIBS)
@@ -228,7 +222,7 @@ obj/$(FILENAME)/Resource.o: src/Resource.cpp $(addprefix src/Resource/, $(addsuf
 	@echo Compiling $<
 	@$(CXX) $(CXXFLAGS) $< -o $@ -c
 
-src/Resource/%.h: res/resources/% obj/bin2h
+src/Resource/%.h: res/% obj/bin2h
 	@mkdir -p $(@D)
 	@echo Converting $<
 	@obj/bin2h $< $@
@@ -240,9 +234,10 @@ obj/bin2h: src/misc/bin2h.c
 
 include $(wildcard $(DEPENDENCIES))
 
-obj/$(FILENAME)/win_icon.o: res/resources/ICON/ICON.rc res/resources/ICON/0.ico res/resources/ICON/ICON_MINI.ico
+obj/$(FILENAME)/win_icon.o: res/ICON/ICON.rc res/ICON/0.ico res/ICON/ICON_MINI.ico
 	@mkdir -p $(@D)
 	@windres $< $@
 
+# TODO
 clean:
-	@rm -rf build obj
+	@rm -rf obj