1all: shell.o cmd.o cmd_help.o cmd_test.o 2 3 $(LD) -b elf64-x86-64 -z muldefs -o $(tmp_output_dir)/shell $(shell find . -name "*.o") $(shell find $(sys_libs_dir) -name "*.o") -T shell.lds 4 5 $(OBJCOPY) -I elf64-x86-64 -R ".eh_frame" -R ".comment" -O elf64-x86-64 $(tmp_output_dir)/shell $(output_dir)/shell.elf 6shell.o: shell.c 7 $(CC) $(CFLAGS) -c shell.c -o shell.o 8 9cmd.o: cmd.c 10 $(CC) $(CFLAGS) -c cmd.c -o cmd.o 11 12cmd_test.o: cmd_test.c 13 $(CC) $(CFLAGS) -c cmd_test.c -o cmd_test.o 14 15cmd_help.o: cmd_help.c 16 $(CC) $(CFLAGS) -c cmd_help.c -o cmd_help.o 17