m1n1/Makefile

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Makefile
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ARCH := aarch64-linux-gnu-
CFLAGS := -O2 -Wall -Wundef -Werror=strict-prototypes -fno-common -fno-PIE \
-Werror=implicit-function-declaration -Werror=implicit-int \
-Wsign-compare -Wunused-parameter \
-ffreestanding -fpic -ffunction-sections -fdata-sections \
-fno-stack-protector -mgeneral-regs-only -mstrict-align
LDFLAGS := -T m1n1.ld -EL -maarch64elf --no-undefined -X -Bsymbolic \
-z notext --no-apply-dynamic-relocs --orphan-handling=warn --strip-debug \
-z nocopyreloc --gc-sections -pie
MINILZLIB_OBJECTS := $(patsubst %,minilzlib/%, \
dictbuf.o inputbuf.o lzma2dec.o lzmadec.o rangedec.o xzstream.o)
TINF_OBJECTS := $(patsubst %,tinf/%, \
adler32.o crc32.o tinfgzip.o tinflate.o tinfzlib.o)
DLMALLOC_OBJECTS := dlmalloc/malloc.o
OBJECTS := adt.o bootlogo_128.o bootlogo_256.o chickens.o exception.o exception_asm.o fb.o \
heapblock.o main.o memory.o memory_asm.o proxy.o smp.o start.o startup.o string.o uart.o \
uartproxy.o utils.o utils_asm.o vsprintf.o wdt.o $(MINILZLIB_OBJECTS) $(TINF_OBJECTS) \
$(DLMALLOC_OBJECTS)
DTS := apple-j274.dts
BUILD_OBJS := $(patsubst %,build/%,$(OBJECTS))
DTBS := $(patsubst %.dts,build/dtb/%.dtb,$(DTS))
NAME := m1n1
TARGET := m1n1.macho
DEPDIR := build/.deps
ifeq ($(USE_CLANG),1)
CC := clang --target=$(ARCH)
AS := clang --target=$(ARCH)
LD := ld.lld
OBJCOPY := llvm-objcopy
else
CC := $(ARCH)gcc
AS := $(ARCH)gcc
LD := $(ARCH)ld
OBJCOPY := $(ARCH)objcopy
endif
.PHONY: all clean format
all: build/$(TARGET) $(DTBS)
clean:
rm -rf build/*
format:
clang-format -i src/*.c src/*.h
build/dtb/%.dtb: dts/%.dts
@echo " DTC $@"
@mkdir -p "$(dir $@)"
@dtc -I dts $< >$@
build/%.o: src/%.S
@echo " AS $@"
@mkdir -p $(DEPDIR)
@mkdir -p "$(dir $@)"
@$(AS) -c $(CFLAGS) -Wp,-MMD,$(DEPDIR)/$(*F).d,-MQ,"$@",-MP -o $@ $<
build/%.o: src/%.c
@echo " CC $@"
@mkdir -p $(DEPDIR)
@mkdir -p "$(dir $@)"
@$(CC) -c $(CFLAGS) -Wp,-MMD,$(DEPDIR)/$(*F).d,-MQ,"$@",-MP -o $@ $<
build/$(NAME).elf: $(BUILD_OBJS) m1n1.ld
@echo " LD $@"
@$(LD) $(LDFLAGS) -o $@ $(BUILD_OBJS)
build/$(NAME).macho: build/$(NAME).elf
@echo " MACHO $@"
@$(OBJCOPY) -O binary $< $@
build/build_tag.h:
@echo " TAG $@"
@echo "#define BUILD_TAG \"$$(git describe --always --dirty)\"" > $@
build/%.bin: data/%.png
@echo " IMG $@"
@convert $< -background black -flatten -depth 8 rgba:$@
build/%.o: build/%.bin
@echo " BIN $@"
@$(OBJCOPY) -I binary -B aarch64 -O elf64-littleaarch64 $< $@
build/main.o: build/build_tag.h src/main.c
-include $(DEPDIR)/*