我下载了 GRBL，我正在尝试将它上传到我的 Gen7 v 1.5 板（reprap）。我制作了 make 文件并尝试构建 main.c 但出现了构建错误。

链接：main.elf
avr-gcc -mmcu=atmega1284p -I。-gdwarf-2 -DF_CPU=16000000UL -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=main.o -std=gnu99 -MMD -MP – MF .dep/main.elf.d main.o –output main.elf -Wl,-Map=main.map,–cref -lm
main.o: 在函数main': F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:32: undefined reference toserial_init’
F:\Projects\3d Printer\Firmware \grbl-master\grbl-master\grbl/main.c:33: 对settings_init' F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:34: undefined reference tostepper_init 的未定义引用
F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:35: 未定义引用到system_init' F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:49: undefined reference to设置’
F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:65: undefined reference to serial_reset_read_buffer' F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:66: undefined reference togc_init’
F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:67: 未定义对spindle_init' F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:68: undefined reference tocoolant_init 的引用’
F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl /main.c:69: 对limits_init' F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:70: undefined reference toprobe_init’
F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:71 的未定义引用：对plan_reset' F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:72: undefined reference tost_reset’
F:\Projects\3d Printer的未定义引用\Firmware\grbl-master\grbl-master\grbl/main.c:75: 未定义对plan_sync_position' F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:76: undefined reference togc_sync_position 的引用’
F:\Projects\3d Printer\Firmware\grbl-master\grbl-master\grbl/main.c:85:未定义对“protocol_main_loop”
make.exe 的引用：*** [main.elf] 错误 1

有人可以告诉我问题是什么吗？