completed game

Makefile

@@ -1,22 +1,81 @@
-CC = gcc
-CFLAGS = -Wall -Wextra -O3 -Iinclude
-SRC_DIR = src
-OBJ_DIR = build
-BIN_DIR = bin
+CC ?= cc
+CPPFLAGS = -Iinclude
+CFLAGS ?= -O2 -std=c11 -Wall -Wextra -Wpedantic
+SDL_CFLAGS := $(shell pkg-config --cflags sdl2 SDL2_ttf 2>/dev/null)
+SDL_LIBS := $(shell pkg-config --libs sdl2 SDL2_ttf 2>/dev/null)
+ifneq ($(SDL_LIBS),)
+CPPFLAGS += -DHAVE_SDL_UI $(SDL_CFLAGS)
+LDLIBS += $(SDL_LIBS)
+endif
 
-SOURCES = $(wildcard $(SRC_DIR)/*.c)
-OBJECTS = $(SOURCES:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o)
-TARGET = $(BIN_DIR)/mos6502
+CORE_SRC = src/addressing.c src/bus.c src/cpu.c src/loader.c src/memory.c src/opcode.c
+APP_SRC = $(CORE_SRC) src/frontend.c src/main.c
+APP_OBJ = $(APP_SRC:src/%.c=build/%.o)
+TARGET = bin/mos6502
+SDL_TARGET = bin/mos6502-sdl
 
+.PHONY: all clean test test-rom test-functional fetch-roms debug sanitize snake check-deps FORCE
 all: $(TARGET)
 
-$(TARGET): $(OBJECTS)
-	@mkdir -p $(BIN_DIR)
-	$(CC) $(OBJECTS) -o $@
+$(TARGET): $(APP_OBJ)
+	@mkdir -p bin
+	$(CC) $(CFLAGS) $(APP_OBJ) $(LDLIBS) -o $@
 
-$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c
-	@mkdir -p $(OBJ_DIR)
-	$(CC) $(CFLAGS) -c $< -o $@
+# A separate target prevents a previously built dependency-free frontend stub
+# from being reused after SDL2 is installed.
+$(SDL_TARGET): $(APP_SRC)
+	@mkdir -p bin
+	$(CC) -Iinclude -DHAVE_SDL_UI $(CFLAGS) $(SDL_CFLAGS) $(APP_SRC) $(SDL_LIBS) -o $@
+
+build/%.o: src/%.c
+	@mkdir -p build
+	$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
+
+bin/run_tests: FORCE $(CORE_SRC) tests/run_tests.c
+	@mkdir -p bin
+	$(CC) $(CPPFLAGS) $(CFLAGS) -Itests $(CORE_SRC) tests/run_tests.c -o $@
+
+test: bin/run_tests
+	./bin/run_tests
+
+bin/run_suite: $(CORE_SRC) tests/run_suite.c
+	@mkdir -p bin
+	$(CC) $(CPPFLAGS) $(CFLAGS) $(CORE_SRC) tests/run_suite.c -o $@
+
+test-rom: bin/run_suite
+	@test -n "$(ROM)" -a -n "$(START)" -a -n "$(SUCCESS)" || (echo "usage: make test-rom ROM=file LOAD=0 START=0x400 SUCCESS=0x3469"; exit 2)
+	./bin/run_suite "$(ROM)" "$(or $(LOAD),0)" "$(START)" "$(SUCCESS)" "$(or $(LIMIT),100000000)"
+
+tests/roms/6502_functional_test.bin:
+	@mkdir -p tests/roms
+	curl -L --fail -o $@ https://raw.githubusercontent.com/Klaus2m5/6502_65C02_functional_tests/master/bin_files/6502_functional_test.bin
+	@echo "fa12bfc761e6f9057e4cc01a665a7b800ff01ae91f598af1e39a1201d01953fd  $@" | sha256sum -c -
+
+fetch-roms: tests/roms/6502_functional_test.bin
+
+test-functional: tests/roms/6502_functional_test.bin bin/run_suite
+	./bin/run_suite $< 0 0x400 0x3469 100000000
+
+debug: CFLAGS = -O0 -g3 -std=c11 -Wall -Wextra -Wpedantic -Werror
+debug: clean all test
+
+sanitize: CFLAGS = -O1 -g3 -std=c11 -Wall -Wextra -Wpedantic -fsanitize=address,undefined
+sanitize: export ASAN_OPTIONS = detect_leaks=0
+sanitize: clean all test
+
+games/snake.bin: games/snake.s games/snake.cfg
+	ca65 games/snake.s -o build/snake.o
+	ld65 -C games/snake.cfg build/snake.o -o $@
+
+check-deps:
+	@pkg-config --exists sdl2 || (echo "SDL2 development package is required"; exit 1)
+	@pkg-config --exists SDL2_ttf || (echo "SDL2_ttf development package is required (for example: sudo apt install libsdl2-ttf-dev)"; exit 1)
+	@command -v ca65 >/dev/null || (echo "cc65 (ca65/ld65) is required"; exit 1)
+
+snake: check-deps games/snake.bin $(SDL_TARGET)
+	./$(SDL_TARGET) games/snake.bin --load 0x0600 --start 0x0600 --hz 1000000 --scale 16
 
 clean:
-	rm -rf $(OBJ_DIR) $(BIN_DIR)
+	rm -rf build bin games/snake.bin
+
+FORCE: