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DO != echo > deps.mk
CFLAGS = -fno-pie -ggdb3 -ffreestanding -nostdlib
DEPFLAGS = -MT $@ -MMD -MP -MF $@.d
all: apos.bin
ARCH ?= riscv
CROSS_COMPILE ?= riscv64-unknown-elf-
# Common programs
CC := gcc
AR := ar
CPP := cpp
OBJCOPY ?= objcopy
OBJCOPY_FLAGS ?= -Obinary
COMMON_SOURCES != echo common/*.c
KERNEL_SOURCES := $(COMMON_SOURCES)
INIT_SOURCES := $(COMMON_SOURCES)
CLEANUP := build deps.mk kernel.* init.* apos.bin
CLEANUP_CMD :=
include arch/$(ARCH)/source.mk
INCLUDE_FLAGS := -Iinclude -Iarch/$(ARCH)/include $(USE_FDT:y=-Idtc/libfdt)
COMPILE = $(CROSS_COMPILE)$(CC) $(CFLAGS) $(DEPFLAGS) $(INCLUDE_FLAGS)
GENLINK = $(CROSS_COMPILE)$(CPP) $(DEPFLAGS) $(INCLUDE_FLAGS)
STRIPLINK = sed -n '/^[^\#]/p'
KERNEL_LINK := arch/$(ARCH)/conf/kernel-link
INIT_LINK := arch/$(ARCH)/conf/init-link
KERNEL_OBJECTS != ./scripts/gen-deps --kern "$(KERNEL_SOURCES)"
INIT_OBJECTS != ./scripts/gen-deps --init "$(INIT_SOURCES)"
KERNEL_LD != ./scripts/gen-deps --link "$(KERNEL_LINK).S"
INIT_LD != ./scripts/gen-deps --link "$(INIT_LINK).S"
include deps.mk
apos.bin: kernel.elf init.elf
$(CROSS_COMPILE)$(OBJCOPY) $(OBJCOPY_FLAGS) kernel.elf kernel.bin
$(CROSS_COMPILE)$(OBJCOPY) $(OBJCOPY_FLAGS) init.elf init.bin
cat init.bin kernel.bin > $@
kernel.elf: $(KERNEL_OBJECTS) $(KERNEL_LD)
$(COMPILE) -T$(KERNEL_LD) $(KERNEL_OBJECTS) -o $@
init.elf: $(INIT_OBJECTS) $(INIT_LD)
$(COMPILE) -T$(INIT_LD) $(INIT_OBJECTS) -o $@
clean:
$(CLEANUP_CMD)
$(RM) -r $(CLEANUP)
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