# Atari ST (m68k-atari-mint-gcc) build rules.

include $(dir $(lastword $(MAKEFILE_LIST)))/common.mk

PLATFORM := atarist
BUILD    := $(REPO_DIR)/build/$(PLATFORM)
LIBDIR   := $(BUILD)/lib
BINDIR   := $(BUILD)/bin

CFLAGS  := $(COMMON_CFLAGS) -DJOEYLIB_PLATFORM_ATARIST -m68000 -fomit-frame-pointer -I$(REPO_DIR)/toolchains/audio/libxmp-lite/include -I$(REPO_DIR)/toolchains/atarist/include-shim
# m68k-atari-mint gcc emits a.out (.o files report "a.out SunOS"),
# not ELF. vasm has to match or `ld: file in wrong format` fires at
# link time.
ASFLAGS := -Faout -m68000 -quiet
LDFLAGS :=

# libxmp-lite shared with the DOS port. Built as a static archive that
# provides the Protracker pattern decoder for the ST audio HAL; the
# 68k 4-channel mixer + YM2149 PWM output stage layer on top.
LIBXMP_DIR     := $(REPO_DIR)/toolchains/audio/libxmp-lite
LIBXMP_SRC     := $(filter-out %/win32.c, $(wildcard $(LIBXMP_DIR)/src/*.c) $(wildcard $(LIBXMP_DIR)/src/loaders/*.c))
LIBXMP_OBJDIR  := $(BUILD)/obj/libxmp-lite
LIBXMP_OBJS    := $(patsubst $(LIBXMP_DIR)/src/%.c,$(LIBXMP_OBJDIR)/%.o,$(LIBXMP_SRC)) $(LIBXMP_OBJDIR)/math_shim.o
LIBXMP_AR      := $(LIBDIR)/libxmplite.a
# LIBXMP_CORE_DISABLE_IT skips the IT-format filter code so libxmp-lite
# doesn't reach for math.h / libm -- mintlib doesn't ship either. We
# target MOD as the authoring format anyway, so dropping IT filter
# support has no impact on JoeyLib's audio.
LIBXMP_CFLAGS  := -DLIBXMP_CORE_PLAYER -DLIBXMP_CORE_DISABLE_IT -DHAVE_FNMATCH=0 -I$(LIBXMP_DIR)/include -I$(LIBXMP_DIR)/include/libxmp-lite -I$(LIBXMP_DIR)/src -Wno-unused-parameter

PORT_C_SRCS := $(wildcard $(SRC_PORT)/atarist/*.c)
PORT_S_SRCS := $(wildcard $(SRC_PORT)/atarist/*.s)
SHARED_S    := $(wildcard $(SRC_68K)/*.s)

# Sprite codegen: 68k emitter shared with the Amiga port.
CODEGEN_DIR := $(REPO_DIR)/src/codegen

LIB_OBJS := \
    $(patsubst $(SRC_CORE)/%.c,$(BUILD)/obj/core/%.o,$(CORE_C_SRCS)) \
    $(patsubst $(SRC_PORT)/atarist/%.c,$(BUILD)/obj/port/%.o,$(PORT_C_SRCS)) \
    $(patsubst $(SRC_PORT)/atarist/%.s,$(BUILD)/obj/port/%.o,$(PORT_S_SRCS)) \
    $(patsubst $(SRC_68K)/%.s,$(BUILD)/obj/68k/%.o,$(SHARED_S)) \
    $(BUILD)/obj/codegen/spriteEmit68k.o \
    $(BUILD)/obj/codegen/spriteCompile.o

LIB := $(LIBDIR)/libjoey.a

HELLO_SRC   := $(EXAMPLES)/hello/hello.c
HELLO_BIN   := $(BINDIR)/HELLO.PRG
PATTERN_SRC := $(EXAMPLES)/pattern/pattern.c
PATTERN_BIN := $(BINDIR)/PATTERN.PRG
KEYS_SRC    := $(EXAMPLES)/keys/keys.c
KEYS_BIN    := $(BINDIR)/KEYS.PRG
JOY_SRC     := $(EXAMPLES)/joy/joy.c
JOY_BIN     := $(BINDIR)/JOY.PRG
SPRITE_SRC  := $(EXAMPLES)/sprite/sprite.c
SPRITE_BIN  := $(BINDIR)/SPRITE.PRG
AUDIO_SRC   := $(EXAMPLES)/audio/audio.c
AUDIO_BIN   := $(BINDIR)/AUDIO.PRG

# Game data lives under bin/DATA/, alongside the binaries Hatari picks
# up when bin/ is mounted as the GEMDOS C: drive. audio.c fopens
# "DATA/test.mod" etc.
DATA_DIR    := $(BINDIR)/DATA
DATA_FILES  := $(DATA_DIR)/test.mod $(DATA_DIR)/test.sfx

.PHONY: all atarist clean-atarist
all atarist: $(LIB) $(LIBXMP_AR) $(HELLO_BIN) $(PATTERN_BIN) $(KEYS_BIN) $(JOY_BIN) $(SPRITE_BIN) $(AUDIO_BIN) $(DATA_FILES)

$(BUILD)/obj/core/%.o: $(SRC_CORE)/%.c
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) -c $< -o $@

$(BUILD)/obj/port/%.o: $(SRC_PORT)/atarist/%.c
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) -c $< -o $@

$(BUILD)/obj/port/%.o: $(SRC_PORT)/atarist/%.s
	@mkdir -p $(dir $@)
	$(ST_AS) $(ASFLAGS) $< -o $@

$(BUILD)/obj/68k/%.o: $(SRC_68K)/%.s
	@mkdir -p $(dir $@)
	$(ST_AS) $(ASFLAGS) $< -o $@

$(BUILD)/obj/codegen/%.o: $(CODEGEN_DIR)/%.c
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) -I$(CODEGEN_DIR) -c $< -o $@

$(LIB): $(LIB_OBJS)
	@mkdir -p $(dir $@)
	$(ST_AR) rcs $@ $^

$(LIBXMP_OBJDIR)/%.o: $(LIBXMP_DIR)/src/%.c
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) $(LIBXMP_CFLAGS) -c $< -o $@

$(LIBXMP_OBJDIR)/math_shim.o: $(REPO_DIR)/toolchains/atarist/include-shim/math_shim.c
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) -c $< -o $@

$(LIBXMP_AR): $(LIBXMP_OBJS)
	@mkdir -p $(dir $@)
	$(ST_AR) rcs $@ $^

$(HELLO_BIN): $(HELLO_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) $< $(LIB) $(LIBXMP_AR) -o $@ $(LDFLAGS)

$(PATTERN_BIN): $(PATTERN_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) $< $(LIB) $(LIBXMP_AR) -o $@ $(LDFLAGS)

$(KEYS_BIN): $(KEYS_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) $< $(LIB) $(LIBXMP_AR) -o $@ $(LDFLAGS)

$(JOY_BIN): $(JOY_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) $< $(LIB) $(LIBXMP_AR) -o $@ $(LDFLAGS)

$(SPRITE_BIN): $(SPRITE_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) $< $(LIB) $(LIBXMP_AR) -o $@ $(LDFLAGS)

$(AUDIO_BIN): $(AUDIO_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(ST_CC) $(CFLAGS) $< $(LIB) $(LIBXMP_AR) -o $@ $(LDFLAGS)

$(DATA_DIR)/test.mod: $(REPO_DIR)/assets/test.mod
	@mkdir -p $(DATA_DIR)
	cp $< $@

$(DATA_DIR)/test.sfx: $(REPO_DIR)/assets/test.sfx
	@mkdir -p $(DATA_DIR)
	cp $< $@

clean-atarist:
	rm -rf $(BUILD)