makefile_lib

# Build SGDK library to be referenced in projects

# specify SGDK root dir
SGDK?=/opt/sgdk

# specify your M68k GNU toolchain prefix
M68K_PREFIX?=m68k-elf-

###################################################
# fancy colors cause we're fancy
CLEAR=\033[0m
RED=\033[1;31m
YELLOW=\033[1;33m
GREEN=\033[1;32m

# library source directories
SRC_DIR:=$(SGDK)/src
RES_DIR:=$(SGDK)/res
INC_DIR:=$(SGDK)/inc

# m68k toolset
CC:=$(M68K_PREFIX)gcc
OBJCPY:=$(M68K_PREFIX)objcopy

# z80 toolset
ASM_Z80=sjasmplus

# SGDK toolset
RESCOMP:=java -jar $(SGDK)/bin/rescomp.jar
BINTOS:=$(SGDK)/bin/bintos

# gather code & resources
SRC_C:=$(wildcard $(SRC_DIR)/*.c)
SRC_S:=$(wildcard $(SRC_DIR)/*.s)
SRC_S80:=$(wildcard $(SRC_DIR)/*.s80)
RES:=$(wildcard $(RES_DIR)/*.res)

# setup output objects
OBJ:=$(RES:.res=.o)
OBJ+=$(SRC_S80:.s80=.o)
OBJ+=$(SRC_S:.s=.o)
OBJ+=$(SRC_C:.c=.o)

LST:=$(SRC_C:.c=.lst)

# setup includes
INC:=-I$(INC_DIR) -I$(SRC_DIR) -I$(RES_DIR)

# default flags
DEF_FLAGS_M68K:=-m68000 -Wall -Wextra -Wno-shift-negative-value -fno-builtin $(INC)
DEF_FLAGS_Z80:=-i$(SRC_DIR) -i$(INC_DIR)

release: envcheck
release: FLAGS:=$(DEF_FLAGS_M68K) -O3 -fuse-linker-plugin -fno-web -fno-gcse -fno-unit-at-a-time -fomit-frame-pointer -flto
release: $(SGDK)/lib/libmd.a

debug: envcheck
debug: FLAGS:=$(DEF_FLAGS_M68K) -O1 -ggdb -DDEBUG=1
debug: $(SGDK)/lib/libmd_debug.a

asm: envcheck
asm: FLAGS:=$(DEF_FLAGS_M68K) -O3 -fuse-linker-plugin -fno-web -fno-gcse -fno-unit-at-a-time -fomit-frame-pointer -S
asm: $(LST)

all: release
default: release
Default: release
Release: release

.PHONY: clean

envcheck:
	@if [ ! -d $(SGDK) ]; then echo -e "${RED}*** SGDK directory not found!${CLEAR}"; exit -1; fi
	@command -v $(CC) >/dev/null || { echo -e "${RED}*** '$(CC)' not found!${CLEAR}"; exit -1; }
	@command -v $(OBJCOPY) >/dev/null || { echo -e "${RED}*** '$(OBJCOPY)' not found!${CLEAR}"; exit -1; }

cleanobj:
	@rm -f $(OBJ)

cleanrelease: cleanobj
	@rm -f $(SGDK)/lib/libmd.a

cleandebug: cleanobj
	@rm -f $(SGDK)/lib/libmd_debug.a

clean: cleanobj
	@rm -f $(SGDK)/lib/libmd.a $(SGDK)/lib/libmd_debug.a $(OBJ)

cleanall: clean
cleanAll: clean
cleandefault: clean
cleanDefault: clean

cleanRelease: cleanrelease
cleanDebug: cleandebug
cleanAsm: cleanasm

$(SGDK)/lib/libmd.a: $(OBJ)
	ar rs $(SGDK)/lib/libmd.a $(OBJ)

$(SGDK)/lib/libmd_debug.a: $(OBJ)
	ar rs $(SGDK)/lib/libmd_debug.a $(OBJ)

%.lst: %.c
	$(CC) $(FLAGS) -c $< -o $@

%.o: %.c
	$(CC) $(FLAGS) -MMD -c $< -o $@

%.o: %.s
	$(CC) -x assembler-with-cpp $(FLAGS) -c $< -o $@

%.o: %.rs
	$(CC) -x assembler-with-cpp $(FLAGS) -c $< -o $@

%.rs: %.res
	$(RESCOMP) $*.res $*.rs -dep $*.o

%.o80: %.s80
	$(ASM_Z80) $(DEF_FLAGS_Z80) --raw=$@ $<
	
%.s: %.o80
	$(BINTOS) $<