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n64.mk
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n64.mk
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BUILD_DIR ?= .
SOURCE_DIR ?= .
N64_ROM_TITLE = "Made with libdragon" # Override this with the name of your game or project
N64_ROM_SAVETYPE = # Supported savetypes: none eeprom4k eeprom16 sram256k sram768k sram1m flashram
N64_ROM_RTC = # Set to true to enable the Joybus Real-Time Clock
N64_ROM_REGIONFREE = # Set to true to allow booting on any console region
N64_ROM_ELFCOMPRESS = 1 # Set compression level of ELF file in ROM
# Override this to use a toolchain installed separately from libdragon
N64_GCCPREFIX ?= $(N64_INST)
N64_ROOTDIR = $(N64_INST)
N64_BINDIR = $(N64_ROOTDIR)/bin
N64_INCLUDEDIR = $(N64_ROOTDIR)/mips64-elf/include
N64_LIBDIR = $(N64_ROOTDIR)/mips64-elf/lib
N64_GCCPREFIX_TRIPLET = $(N64_GCCPREFIX)/bin/mips64-elf-
COMMA:=,
N64_CC = $(N64_GCCPREFIX_TRIPLET)gcc
N64_CXX = $(N64_GCCPREFIX_TRIPLET)g++
N64_AS = $(N64_GCCPREFIX_TRIPLET)as
N64_AR = $(N64_GCCPREFIX_TRIPLET)ar
N64_LD = $(N64_GCCPREFIX_TRIPLET)ld
N64_OBJCOPY = $(N64_GCCPREFIX_TRIPLET)objcopy
N64_OBJDUMP = $(N64_GCCPREFIX_TRIPLET)objdump
N64_SIZE = $(N64_GCCPREFIX_TRIPLET)size
N64_NM = $(N64_GCCPREFIX_TRIPLET)nm
N64_STRIP = $(N64_GCCPREFIX_TRIPLET)strip
N64_CHKSUM = $(N64_BINDIR)/chksum64
N64_ED64ROMCONFIG = $(N64_BINDIR)/ed64romconfig
N64_MKDFS = $(N64_BINDIR)/mkdfs
N64_TOOL = $(N64_BINDIR)/n64tool
N64_SYM = $(N64_BINDIR)/n64sym
N64_ELFCOMPRESS = $(N64_BINDIR)/n64elfcompress
N64_AUDIOCONV = $(N64_BINDIR)/audioconv64
N64_MKSPRITE = $(N64_BINDIR)/mksprite
N64_C_AND_CXX_FLAGS = -march=vr4300 -mtune=vr4300 -I$(N64_INCLUDEDIR)
N64_C_AND_CXX_FLAGS += -falign-functions=32 # NOTE: if you change this, also change backtrace() in backtrace.c
N64_C_AND_CXX_FLAGS += -ffunction-sections -fdata-sections -g -ffile-prefix-map="$(CURDIR)"=
N64_C_AND_CXX_FLAGS += -ffast-math -ftrapping-math -fno-associative-math
N64_C_AND_CXX_FLAGS += -DN64 -O2 -Wall -Werror -Wno-error=deprecated-declarations -fdiagnostics-color=always
N64_C_AND_CXX_FLAGS += -Wno-error=unused-variable -Wno-error=unused-but-set-variable -Wno-error=unused-function -Wno-error=unused-parameter -Wno-error=unused-but-set-parameter -Wno-error=unused-label -Wno-error=unused-local-typedefs -Wno-error=unused-const-variable
N64_CFLAGS = $(N64_C_AND_CXX_FLAGS) -std=gnu99
N64_CXXFLAGS = $(N64_C_AND_CXX_FLAGS) -std=gnu++17
N64_ASFLAGS = -mtune=vr4300 -march=vr4300 -Wa,--fatal-warnings -I$(N64_INCLUDEDIR)
N64_RSPASFLAGS = -march=mips1 -mabi=32 -Wa,--fatal-warnings -I$(N64_INCLUDEDIR)
N64_LDFLAGS = -g -L$(N64_LIBDIR) -ldragon -lm -ldragonsys -Tn64.ld --gc-sections --wrap __do_global_ctors
N64_TOOLFLAGS = --title $(N64_ROM_TITLE)
N64_ED64ROMCONFIGFLAGS = $(if $(N64_ROM_SAVETYPE),--savetype $(N64_ROM_SAVETYPE))
N64_ED64ROMCONFIGFLAGS += $(if $(N64_ROM_RTC),--rtc)
N64_ED64ROMCONFIGFLAGS += $(if $(N64_ROM_REGIONFREE),--regionfree)
ifeq ($(D),1)
CFLAGS+=-g3
CXXFLAGS+=-g3
ASFLAGS+=-g
RSPASFLAGS+=-g
LDFLAGS+=-g
endif
# automatic .d dependency generation
CFLAGS+=-MMD
CXXFLAGS+=-MMD
ASFLAGS+=-MMD
RSPASFLAGS+=-MMD
# Change all the dependency chain of z64 ROMs to use the N64 toolchain.
%.z64: CC=$(N64_CC)
%.z64: CXX=$(N64_CXX)
%.z64: AS=$(N64_AS)
%.z64: LD=$(N64_LD)
%.z64: CFLAGS+=$(N64_CFLAGS)
%.z64: CXXFLAGS+=$(N64_CXXFLAGS)
%.z64: ASFLAGS+=$(N64_ASFLAGS)
%.z64: RSPASFLAGS+=$(N64_RSPASFLAGS)
%.z64: LDFLAGS+=$(N64_LDFLAGS)
%.z64: $(BUILD_DIR)/%.elf
@echo " [Z64] $@"
$(N64_SYM) $< $<.sym
cp $< $<.stripped
$(N64_STRIP) -s $<.stripped
$(N64_ELFCOMPRESS) -o $(dir $<) -c $(N64_ROM_ELFCOMPRESS) $<.stripped
@rm -f $@
DFS_FILE="$(filter %.dfs, $^)"; \
if [ -z "$$DFS_FILE" ]; then \
$(N64_TOOL) $(N64_TOOLFLAGS) --toc --output $@ --align 256 $<.stripped --align 8 $<.sym; \
else \
$(N64_TOOL) $(N64_TOOLFLAGS) --toc --output $@ --align 256 $<.stripped --align 8 $<.sym --align 16 "$$DFS_FILE"; \
fi
if [ ! -z "$(strip $(N64_ED64ROMCONFIGFLAGS))" ]; then \
$(N64_ED64ROMCONFIG) $(N64_ED64ROMCONFIGFLAGS) $@; \
fi
%.v64: %.z64
@echo " [V64] $@"
$(N64_OBJCOPY) -I binary -O binary --reverse-bytes=2 $< $@
%.dfs:
@mkdir -p $(dir $@)
@echo " [DFS] $@"
$(N64_MKDFS) $@ $(<D) >/dev/null
# Assembly rule. We use .S for both RSP and MIPS assembly code, and we differentiate
# using the prefix of the filename: if it starts with "rsp", it is RSP ucode, otherwise
# it's a standard MIPS assembly file.
$(BUILD_DIR)/%.o: $(SOURCE_DIR)/%.S
@mkdir -p $(dir $@)
set -e; \
FILENAME="$(notdir $(basename $@))"; \
if case "$$FILENAME" in "rsp"*) true;; *) false;; esac; then \
SYMPREFIX="$(subst .,_,$(subst /,_,$(basename $@)))"; \
TEXTSECTION="$(basename $@).text"; \
DATASECTION="$(basename $@).data"; \
BINARY="$(basename $@).elf"; \
echo " [RSP] $<"; \
$(N64_CC) $(RSPASFLAGS) -L$(N64_LIBDIR) -nostartfiles -Wl,-Trsp.ld -Wl,--gc-sections -Wl,-Map=$(BUILD_DIR)/$(notdir $(basename $@)).map -o $@ $<; \
mv "$@" $$BINARY; \
$(N64_OBJCOPY) -O binary -j .text $$BINARY $$TEXTSECTION.bin; \
$(N64_OBJCOPY) -O binary -j .data $$BINARY $$DATASECTION.bin; \
$(N64_OBJCOPY) -I binary -O elf32-bigmips -B mips4300 \
--redefine-sym _binary_$${SYMPREFIX}_text_bin_start=$${FILENAME}_text_start \
--redefine-sym _binary_$${SYMPREFIX}_text_bin_end=$${FILENAME}_text_end \
--redefine-sym _binary_$${SYMPREFIX}_text_bin_size=$${FILENAME}_text_size \
--set-section-alignment .data=8 \
--rename-section .text=.data $$TEXTSECTION.bin $$TEXTSECTION.o; \
$(N64_OBJCOPY) -I binary -O elf32-bigmips -B mips4300 \
--redefine-sym _binary_$${SYMPREFIX}_data_bin_start=$${FILENAME}_data_start \
--redefine-sym _binary_$${SYMPREFIX}_data_bin_end=$${FILENAME}_data_end \
--redefine-sym _binary_$${SYMPREFIX}_data_bin_size=$${FILENAME}_data_size \
--set-section-alignment .data=8 \
--rename-section .text=.data $$DATASECTION.bin $$DATASECTION.o; \
$(N64_SIZE) -G $$BINARY; \
$(N64_LD) -relocatable $$TEXTSECTION.o $$DATASECTION.o -o $@; \
rm $$TEXTSECTION.bin $$DATASECTION.bin $$TEXTSECTION.o $$DATASECTION.o; \
else \
echo " [AS] $<"; \
$(CC) -c $(ASFLAGS) -o $@ $<; \
fi
$(BUILD_DIR)/%.o: $(SOURCE_DIR)/%.c
@mkdir -p $(dir $@)
@echo " [CC] $<"
$(CC) -c $(CFLAGS) -o $@ $<
$(BUILD_DIR)/%.o: $(SOURCE_DIR)/%.cpp
@mkdir -p $(dir $@)
@echo " [CXX] $<"
$(CXX) -c $(CXXFLAGS) -o $@ $<
%.elf: $(N64_LIBDIR)/libdragon.a $(N64_LIBDIR)/libdragonsys.a $(N64_LIBDIR)/n64.ld
@mkdir -p $(dir $@)
@echo " [LD] $@"
# We always use g++ to link except for ucode because of the inconsistencies
# between ld when it comes to global ctors dtors. Also see __do_global_ctors
$(CXX) -o $@ $(filter-out $(N64_LIBDIR)/n64.ld,$^) -lc $(patsubst %,-Wl$(COMMA)%,$(LDFLAGS)) -Wl,-Map=$(BUILD_DIR)/$(notdir $(basename $@)).map
$(N64_SIZE) -G $@
ifneq ($(V),1)
.SILENT:
endif