无法生成编译命令（compile_commands.json）文件

# 我自己加的代码
import pprint
pprint.pprint(Env.__dict__)
# 程序中原来的代码
program = Env.Program(target, objects)

scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
scons: building associated VariantDir targets: build
CC build/applications/lcd_init.o
CC build/applications/main.o
CC build/applications/mnt.o
CC build/drivers/board.o
CC build/drivers/drv_keyboard.o
CC build/drivers/drv_mouse.o
CC build/drivers/drv_sdio.o
CC build/drivers/drv_timer.o
CC build/drivers/secondary_cpu.o
CC build/drivers/serial.o
CC build/kernel/components/dfs/filesystems/devfs/devfs.o

Building compilation database compile_commands.json