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# 控制操作系统使用的中断控制器 _INTR_8259A_ _INTR_APIC_ 12PIC := _INTR_APIC_ 13CFLAGS = $(GLOBAL_CFLAGS) -fno-pie -D $(PIC) -I $(shell pwd) -I $(shell pwd)/include -I $(shell pwd)/arch/x86_64/include 14 15export ASFLAGS := --64 16 17LD_LIST := head.o 18 19 20kernel_subdirs := common driver debug arch exception smp sched syscall ktest libs time 21 22 23head.o: head.S 24 $(CC) -E head.S > _head.s # 预处理 25 $(AS) $(ASFLAGS) -o head.o _head.s 26 27 28main.o: main.c 29# -fno-builtin: 不使用C语言内建函数 30# The -m64 option sets int to 32bits and long and pointer to 64 bits and generates code for AMD’s x86-64 architecture. 31 $(CC) $(CFLAGS) -c main.c -o main.o 32 33kernel_rust: 34 rustup default nightly 35 cargo +nightly-2023-01-21 build --release --target ./arch/x86_64/x86_64-unknown-none.json 36 37all: kernel 38 39 @echo "Linking kernel..." 40 $(LD) -b elf64-x86-64 -z muldefs -o kernel head.o main.o $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a -T link.lds --no-relax 41# 生成kallsyms 42 current_dir=$(pwd) 43 44 @dbg='debug';for x in $$dbg; do \ 45 cd $$x;\ 46 $(MAKE) generate_kallsyms kernel_root_path="$(shell pwd)"||exit 1;\ 47 cd ..;\ 48 done 49 50 51# 重新链接 52 @echo "Re-Linking kernel..." 53 @echo $(shell find . -name "*.o") 54 $(LD) -b elf64-x86-64 -z muldefs -o kernel head.o main.o $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a ./debug/kallsyms.o -T link.lds --no-relax 55 @echo "Generating kernel ELF file..." 56# 生成内核文件 57 $(OBJCOPY) -I elf64-x86-64 -O elf64-x86-64 kernel ../../bin/kernel/kernel.elf 58# $(OBJCOPY) -I elf64-x86-64 -O elf64-x86-64 -R ".comment" -R ".eh_frame" kernel ../../bin/kernel/kernel.elf 59 @echo "Kernel Build Done." 60 61ECHO: 62 @echo "$@" 63 64$(kernel_subdirs): ECHO 65 66 $(MAKE) -C $@ all CFLAGS="$(CFLAGS)" ASFLAGS="$(ASFLAGS)" PIC="$(PIC)" kernel_root_path="$(shell pwd)" 67 68kernel: head.o main.o $(kernel_subdirs) kernel_rust 69 70 71 72clean: 73 cargo clean 74 rm -rf $(GARBAGE) 75 @list='$(kernel_subdirs)'; for subdir in $$list; do \ 76 echo "Clean in dir: $$subdir";\ 77 cd $$subdir && $(MAKE) clean;\ 78 cd .. ;\ 79 done