Makefile.blocksds.arm9

# SPDX-License-Identifier: CC0-1.0
#
# SPDX-FileContributor: Antonio Niño Díaz, 2023

ifeq ($(DEBUG),true)
BUILDDIR	:=	build_blocksds/arm9_debug
else
ifeq ($(PROFILE),true)
BUILDDIR	:=	build_blocksds/arm9_profile
else
BUILDDIR	:=	build_blocksds/arm9
endif
endif

BLOCKSDS        ?= /opt/blocksds/core
BLOCKSDSEXT     ?= /opt/blocksds/external

WONDERFUL_TOOLCHAIN     ?= /opt/wonderful
ARM_NONE_EABI_PATH      ?= $(WONDERFUL_TOOLCHAIN)/toolchain/gcc-arm-none-eabi/bin/

# Source code paths
# -----------------

SOURCEDIRS	:= source/devices source arm9/source
INCLUDEDIRS	:= arm9/include include source $(BUILDDIR)
GFXDIRS		:= assets/nds
BINDIRS		:=
AUDIODIRS	:=

# Defines passed to all files
# ---------------------------

DEFINES		:=

# Libraries
# ---------

LIBS		:= -lmm9 -lnds9 -lc
LIBDIRS		:= $(BLOCKSDS)/libs/maxmod \
		   $(BLOCKSDS)/libs/libnds \
		   $(BLOCKSDS)/libs/libc9

# Build artifacts
# ---------------

NAME		:= arm9
ELF		:= $(BUILDDIR)/$(NAME).elf
DUMP		:= $(BUILDDIR)/$(NAME).dump
MAP		:= $(BUILDDIR)/$(NAME).map
SOUNDBANKDIR	:= $(BUILDDIR)/maxmod

# Tools
# -----

PREFIX          := $(ARM_NONE_EABI_PATH)arm-none-eabi-
CC		:= $(PREFIX)gcc
CXX		:= $(PREFIX)g++
OBJDUMP		:= $(PREFIX)objdump
MKDIR		:= mkdir
RM		:= rm -rf

# Verbose flag
# ------------

ifeq ($(VERBOSE),1)
V		:=
else
V		:= @
endif

# Source files
# ------------

ifneq ($(BINDIRS),)
    SOURCES_BIN	:= $(shell find -L $(BINDIRS) -name "*.bin")
    INCLUDEDIRS	+= $(addprefix $(BUILDDIR)/,$(BINDIRS))
endif
ifneq ($(GFXDIRS),)
    SOURCES_PNG	:= $(shell find -L $(GFXDIRS) -name "*.png")
    INCLUDEDIRS	+= $(addprefix $(BUILDDIR)/,$(GFXDIRS))
endif
ifneq ($(AUDIODIRS),)
    SOURCES_AUDIO	:= $(shell find -L $(AUDIODIRS) -regex '.*\.\(it\|mod\|s3m\|wav\|xm\)')
    ifneq ($(SOURCES_AUDIO),)
        INCLUDEDIRS	+= $(SOUNDBANKDIR)
    endif
endif

SOURCES_S	:= $(shell find -L $(SOURCEDIRS) -maxdepth 1 -name "*.s")
SOURCES_C	:= $(shell find -L $(SOURCEDIRS) -maxdepth 1 -name "*.c")
SOURCES_CPP	:= $(shell find -L $(SOURCEDIRS) -maxdepth 1 -name "*.cpp")

# Compiler and linker flags
# -------------------------

DEFINES		+= -D__NDS__ -DARM9 -D__BLOCKSDS__

ARCH		:= -mcpu=arm946e-s+nofp

WARNFLAGS	:= -Wall

ifeq ($(SOURCES_CPP),)
    LD	:= $(CC)
else
    LD	:= $(CXX)
endif

INCLUDEFLAGS	:= $(foreach path,$(INCLUDEDIRS),-I$(path)) \
		   $(foreach path,$(LIBDIRS),-I$(path)/include)

LIBDIRSFLAGS	:= $(foreach path,$(LIBDIRS),-L$(path)/lib)

ASFLAGS		+= -x assembler-with-cpp $(DEFINES) $(ARCH) \
		   -mthumb -mthumb-interwork $(INCLUDEFLAGS) \
		   -ffunction-sections -fdata-sections

CFLAGS		+= -std=gnu11 $(WARNFLAGS) $(DEFINES) $(ARCH) \
		   -mthumb -mthumb-interwork $(INCLUDEFLAGS) -O3 \
		   -ffunction-sections -fdata-sections \
		   -fomit-frame-pointer -ffast-math


CXXFLAGS	+= -std=gnu++14 $(WARNFLAGS) $(DEFINES) $(ARCH) \
		   -mthumb -mthumb-interwork $(INCLUDEFLAGS) -O3 \
		   -ffunction-sections -fdata-sections \
		   -fno-exceptions -fno-rtti \
		   -fomit-frame-pointer

ifeq ($(DEBUG),true)
CFLAGS		+=	-DDEBUG -DCPU_ERROR_CHECKING -DDEBUG_PROFILE
CXXFLAGS	+=	-DDEBUG -DCPU_ERROR_CHECKING -DDEBUG_PROFILE
else
ifeq ($(PROFILE),true)
CFLAGS		+=	-DDEBUG -DDEBUG_PROFILE
CXXFLAGS	+=	-DDEBUG -DDEBUG_PROFILE
endif
endif

LDFLAGS		:= -Wl,--defsym=vfprintf=__i_vfprintf -Wl,--defsym=vfscanf=__i_vfscanf \
		   -mthumb -mthumb-interwork $(LIBDIRSFLAGS) $(ARCH) \
		   -Wl,-Map,$(MAP) -Wl,--gc-sections -nostdlib \
		   -T$(BLOCKSDS)/sys/crts/ds_arm9.mem \
		   -T$(BLOCKSDS)/sys/crts/ds_arm9.ld \
		   -Wl,--no-warn-rwx-segments -Wl,--use-blx \
		   -Wl,--start-group $(LIBS) -lgcc -Wl,--end-group

# Intermediate build files
# ------------------------

OBJS_ASSETS	:= $(addsuffix .o,$(addprefix $(BUILDDIR)/,$(SOURCES_BIN))) \
		   $(addsuffix .o,$(addprefix $(BUILDDIR)/,$(SOURCES_PNG)))

HEADERS_ASSETS	:= $(patsubst %.bin,%_bin.h,$(addprefix $(BUILDDIR)/,$(SOURCES_BIN))) \
		   $(patsubst %.png,%.h,$(addprefix $(BUILDDIR)/,$(SOURCES_PNG)))

ifneq ($(SOURCES_AUDIO),)
    OBJS_ASSETS		+= $(SOUNDBANKDIR)/soundbank.c.o
    HEADERS_ASSETS	+= $(SOUNDBANKDIR)/soundbank.h
endif

OBJS_SOURCES	:= $(addsuffix .o,$(addprefix $(BUILDDIR)/,$(SOURCES_S))) \
		   $(addsuffix .o,$(addprefix $(BUILDDIR)/,$(SOURCES_C))) \
		   $(addsuffix .o,$(addprefix $(BUILDDIR)/,$(SOURCES_CPP)))

OBJS		:= $(OBJS_ASSETS) $(OBJS_SOURCES)

DEPS		:= $(OBJS:.o=.d)

# Targets
# -------

.PHONY: all clean dump

all: $(ELF)

$(ELF): $(OBJS)
	@echo "  LD.9    $@"
	$(V)$(LD) -o $@ $(OBJS) $(BLOCKSDS)/sys/crts/ds_arm9_crt0.o $(LDFLAGS)

$(DUMP): $(ELF)
	@echo "  OBJDUMP.9 $@"
	$(V)$(OBJDUMP) -h -C -S $< > $@

dump: $(DUMP)

clean:
	@echo "  CLEAN.9"
	$(V)$(RM) $(ELF) $(DUMP) $(MAP) $(BUILDDIR)

# Rules
# -----

$(BUILDDIR)/%.s.o : %.s
	@echo "  AS.9    $<"
	@$(MKDIR) -p $(@D)
	$(V)$(CC) $(ASFLAGS) -MMD -MP -c -o $@ $<

$(BUILDDIR)/%.c.o : %.c
	@echo "  CC.9    $<"
	@$(MKDIR) -p $(@D)
	$(V)$(CC) $(CFLAGS) -MMD -MP -c -o $@ $<

$(BUILDDIR)/%.cpp.o : %.cpp
	@echo "  CXX.9   $<"
	@$(MKDIR) -p $(@D)
	$(V)$(CXX) $(CXXFLAGS) -MMD -MP -c -o $@ $<

$(BUILDDIR)/%.bin.o $(BUILDDIR)/%_bin.h : %.bin
	@echo "  BIN2C.9 $<"
	@$(MKDIR) -p $(@D)
	$(V)$(BLOCKSDS)/tools/bin2c/bin2c $< $(@D)
	$(V)$(CC) $(CFLAGS) -MMD -MP -c -o $(BUILDDIR)/$*.bin.o $(BUILDDIR)/$*_bin.c

$(BUILDDIR)/%.png.o $(BUILDDIR)/%.h : %.png %.grit
	@echo "  GRIT.9  $<"
	@$(MKDIR) -p $(@D)
	$(V)$(BLOCKSDS)/tools/grit/grit $< -ftc -W1 -o$(BUILDDIR)/$*
	$(V)$(CC) $(CFLAGS) -MMD -MP -c -o $(BUILDDIR)/$*.png.o $(BUILDDIR)/$*.c

$(SOUNDBANKDIR)/soundbank.c.o $(SOUNDBANKDIR)/soundbank.h : $(SOURCES_AUDIO)
	@echo "  MMUTIL $^"
	@$(MKDIR) -p $(@D)
	@$(BLOCKSDS)/tools/mmutil/mmutil $^ -d \
		-o$(SOUNDBANKDIR)/soundbank.bin -h$(SOUNDBANKDIR)/soundbank.h
	$(V)$(BLOCKSDS)/tools/bin2c/bin2c $(SOUNDBANKDIR)/soundbank.bin \
		$(SOUNDBANKDIR)
	$(V)$(CC) $(CFLAGS) -MMD -MP -c -o $(SOUNDBANKDIR)/soundbank.c.o \
		$(SOUNDBANKDIR)/soundbank_bin.c

# All assets must be built before the source code
# -----------------------------------------------

$(SOURCES_S) $(SOURCES_C) $(SOURCES_CPP): $(HEADERS_ASSETS)

# Include dependency files if they exist
# --------------------------------------

-include $(DEPS)