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.POSIX:
.SUFFIXES:
.PHONY: main run clean
# Paths for SDK.
SDK_BASE := /opt/n64sdk
SDK_BIN := $(SDK_BASE)/bin
LIBULTRA_DIR := $(SDK_BASE)/libultra
LIBULTRA_INC := $(LIBULTRA_DIR)/usr/include
LIBULTRA := $(LIBULTRA_DIR)/usr/lib/libgultra.a
EMULATOR := ares
# Source code location and files to watch for changes.
SRC_DIR := src
BUILD_DIR := build
SRC_MAIN := $(SRC_DIR)/main.c $(SRC_DIR)/entry.s
SRC_LN := $(SRC_DIR)/linker.ld
SRC_OBJ :=
UXN_ROM_C := $(BUILD_DIR)/rom.c
UXN_ROM := $(SRC_DIR)/uxn/bin/screen.rom
OBJECTS := $(patsubst $(SRC_DIR)/%.c, $(BUILD_DIR)/%.o, $(SRC_OBJ))
WATCH_SRC := $(shell find $(SRC_DIR) \
-name "*.c" -or \
-name "*.s" -or \
-name "*.h" -or \
-name "**.ld")
INC_DIRS := $(shell find $(SRC_DIR) -type d)
INC_DIRS += $(BUILD_DIR)
INC_DIRS += $(LIBULTRA_INC)
INC_FLAGS := $(addprefix -I,$(INC_DIRS))
# Output names and executables.
TARGET := uxn64
ELF := $(BUILD_DIR)/$(TARGET).elf
BIN := $(BUILD_DIR)/$(TARGET).bin
ROM := $(BUILD_DIR)/$(TARGET).n64
# Target tools.
TOOLS_BIN2CARR := tools/bin2carr/build/bin2carr
TOOLS_MAKEROM := tools/makerom/build/makerom
# Main compilation tool paths.
CC := $(SDK_BIN)/mips32-elf-gcc
LD := $(SDK_BIN)/mips32-elf-ld
AS := $(SDK_BIN)/mips32-elf-as
OBJDUMP := $(SDK_BIN)/mips32-elf-objdump
OBJCOPY := $(SDK_BIN)/mips32-elf-objcopy
# Compiler and linker configuration.
CFLAGS := -Wall -Wextra -pedantic
CFLAGS += -mabi=32 -mfix4300
CFLAGS += -ffreestanding -G 0
CFLAGS += $(INC_FLAGS)
CFLAGS += -DF3DEX_GBI_2
LDFLAGS := -nostdlib
LDLIBS := $(LIBULTRA) $(SDK_BASE)/lib/gcc/mips32-elf/13.0.0/libgcc.a
RELEASE_CFLAGS := -O2 -DNDEBUG -D_FINALROM
DEBUG_CFLAGS := -O0 -DDEBUG -D_FINALROM
# Setup debug/release builds.
DEBUG ?= 0
ifeq ($(DEBUG), 1)
CFLAGS += $(DEBUG_CFLAGS)
else
CFLAGS += $(RELEASE_CFLAGS)
endif
main: $(ROM)
# Compile the elf file.
$(ELF): $(SRC_MAIN) $(UXN_ROM_C) $(WATCH_SRC) | $(BUILD_DIR)
$(CC) $(CFLAGS) $(LDFLAGS) -o $(ELF) -T $(SRC_LN) $(SRC_MAIN) $(LDLIBS)
# Create the valid .n64 rom from the elf file.
$(BIN): $(ELF) $(WATCH_SRC) | $(BUILD_DIR)
$(OBJCOPY) -O binary $(ELF) $(BIN)
$(ROM): $(BIN) $(TOOLS_MAKEROM) $(WATCH_SRC) | $(BUILD_DIR)
$(TOOLS_MAKEROM) $(BIN) -o $(ROM)
# Build the uxn rom's C file.
$(UXN_ROM_C): $(TOOLS_BIN2CARR) | $(BUILD_DIR)
./$(TOOLS_BIN2CARR) -n uxn_rom -e u8 -o $(UXN_ROM_C) $(UXN_ROM)
# Build the tools.
$(TOOLS_BIN2CARR):
make -C tools/bin2carr
$(TOOLS_MAKEROM):
make -C tools/makerom
# Test the output .n64 in an emulator.
run: $(ROM)
$(EMULATOR) $(ROM)
# Remove build directory.
clean:
rm -rf $(BUILD_DIR)
# Create the build directory.
$(BUILD_DIR):
mkdir -p $(BUILD_DIR)
# Inference rules for C files.
$(BUILD_DIR)/%.o: $(SRC_DIR)/%.c | $(BUILD_DIR)
$(CC) $(CFLAGS) $< -o $@
# Inference rules for assembly files.
$(BUILD_DIR)/%.o: $(SRC_DIR)/%.s | $(BUILD_DIR)
$(AS) $(AFLAGS) -o $@ -c $<
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