# DOS (DJGPP) build rules.

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

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

CFLAGS  := $(COMMON_CFLAGS) -DJOEYLIB_PLATFORM_DOS -march=i386 -m32
ASFLAGS := -f coff
LDFLAGS :=

PORT_C_SRCS := $(wildcard $(SRC_PORT)/dos/*.c)
PORT_S_SRCS := $(wildcard $(SRC_PORT)/dos/*.asm)

LIB_OBJS := \
    $(patsubst $(SRC_CORE)/%.c,$(BUILD)/obj/core/%.o,$(CORE_C_SRCS)) \
    $(patsubst $(SRC_PORT)/dos/%.c,$(BUILD)/obj/port/%.o,$(PORT_C_SRCS)) \
    $(patsubst $(SRC_PORT)/dos/%.asm,$(BUILD)/obj/port/%.o,$(PORT_S_SRCS))

LIB := $(LIBDIR)/libjoey.a

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

.PHONY: all dos clean-dos
all dos: $(LIB) $(HELLO_BIN) $(PATTERN_BIN) $(KEYS_BIN) $(JOY_BIN) $(SPRITE_BIN)

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

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

$(BUILD)/obj/port/%.o: $(SRC_PORT)/dos/%.asm
	@mkdir -p $(dir $@)
	$(DOS_AS) $(ASFLAGS) $< -o $@

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

$(HELLO_BIN): $(HELLO_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(DOS_CC) $(CFLAGS) $< $(LIB) -o $@
	$(DOS_EMBED_DPMI) $@

$(PATTERN_BIN): $(PATTERN_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(DOS_CC) $(CFLAGS) $< $(LIB) -o $@
	$(DOS_EMBED_DPMI) $@

$(KEYS_BIN): $(KEYS_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(DOS_CC) $(CFLAGS) $< $(LIB) -o $@
	$(DOS_EMBED_DPMI) $@

$(JOY_BIN): $(JOY_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(DOS_CC) $(CFLAGS) $< $(LIB) -o $@
	$(DOS_EMBED_DPMI) $@

$(SPRITE_BIN): $(SPRITE_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(DOS_CC) $(CFLAGS) $< $(LIB) -o $@
	$(DOS_EMBED_DPMI) $@

clean-dos:
	rm -rf $(BUILD)