ch32v307-r1 BSP 按照README说明导入RT-Thread Studio编译报错！

../rt-thread/libcpu/risc-v/common/cpuport.h:17:10: fatal error: rtconfig.h: No such file or directory
 #include <rtconfig.h>
          ^~~~~~~~~~~~
compilation terminated.
make: *** [rt-thread/libcpu/risc-v/common/subdir.mk:36: rt-thread/libcpu/risc-v/common/context_gcc.o] Error 1
make: *** Waiting for unfinished jobs....