Build 3.13 for windows UCRT64. No errmap.h and errocde_names.py files

Hi all
I try to build python 3.13 from source for windows MSYS64 UCRT64. I got error of no file errmap.h. Also there is no errocde_names.py. What can I do? Since it is for windows I must use flag CFLAGS=“$CFLAGS -DMS_WINDOWS”
Thanks.