1SUBDIR_ROOTS := . 2DIRS := . $(shell find $(SUBDIR_ROOTS) -type d) 3GARBAGE_PATTERNS := *.o *.s~ *.s *.S~ *.c~ *.h~ kernel 4GARBAGE := $(foreach DIR,$(DIRS),$(addprefix $(DIR)/,$(GARBAGE_PATTERNS))) 5 6DIR_LIB=libs 7lib_patterns := *.a 8LIB_FILES := $(foreach DIR,$(DIR_LIB),$(addprefix $(DIR)/,$(lib_patterns))) 9 10 11# unwind/backtrace related 12UNWIND_ENABLE ?= yes 13CFLAGS_UNWIND = 14LDFLAGS_UNWIND = 15RUSTFLAGS_UNWIND = 16ifeq ($(UNWIND_ENABLE), yes) 17 CFLAGS_UNWIND = -funwind-tables 18 LDFLAGS_UNWIND = --eh-frame-hdr 19 RUSTFLAGS_UNWIND = -Cforce-unwind-tables -Clink-arg=-Wl,eh_frame.ld 20endif 21 22CFLAGS = $(GLOBAL_CFLAGS) -fno-pie $(CFLAGS_UNWIND) -I $(shell pwd) -I $(shell pwd)/include -I $(shell pwd)/arch/x86_64/include 23 24export ASFLAGS := --64 25 26LD_LIST := "" 27 28 29kernel_subdirs := common driver debug exception smp syscall ktest libs time 30 31 32kernel_rust: 33 RUSTFLAGS="$(RUSTFLAGS_UNWIND)" cargo +nightly-2023-01-21 build --release --target ./arch/x86_64/x86_64-unknown-none.json 34 35all: kernel 36 37 @echo "Linking kernel..." 38 $(LD) -b elf64-x86-64 -z muldefs $(LDFLAGS_UNWIND) -o kernel $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a -T link.lds --no-relax 39# 生成kallsyms 40 current_dir=$(pwd) 41 42 @dbg='debug';for x in $$dbg; do \ 43 cd $$x;\ 44 $(MAKE) generate_kallsyms kernel_root_path="$(shell pwd)"||exit 1;\ 45 cd ..;\ 46 done 47 48 49# 重新链接 50 @echo "Re-Linking kernel..." 51 @echo $(shell find . -name "*.o") 52 $(LD) -b elf64-x86-64 -z muldefs $(LDFLAGS_UNWIND) -o kernel $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a ./debug/kallsyms.o -T link.lds --no-relax 53 @echo "Generating kernel ELF file..." 54# 生成内核文件 55ifeq ($(UNWIND_ENABLE), yes) 56 $(OBJCOPY) -I elf64-x86-64 -O elf64-x86-64 kernel ../../bin/kernel/kernel.elf 57else 58 $(OBJCOPY) -I elf64-x86-64 -O elf64-x86-64 -R ".eh_frame" kernel ../../bin/kernel/kernel.elf 59endif 60 @echo "Kernel Build Done." 61 62ECHO: 63 @echo "$@" 64 65$(kernel_subdirs): ECHO 66 67 $(MAKE) -C $@ all CFLAGS="$(CFLAGS)" ASFLAGS="$(ASFLAGS)" kernel_root_path="$(shell pwd)" 68 69kernel: $(kernel_subdirs) kernel_rust 70 71 72 73clean: 74 cargo clean 75 rm -rf $(GARBAGE) 76 @list='$(kernel_subdirs)'; for subdir in $$list; do \ 77 echo "Clean in dir: $$subdir";\ 78 cd $$subdir && $(MAKE) clean;\ 79 cd .. ;\ 80 done 81