diff -Naur Python-3.8.0-orig/configure.ac Python-3.8.0/configure.ac
--- Python-3.8.0-orig/configure.ac	2019-10-22 10:04:22.223897300 +0300
+++ Python-3.8.0/configure.ac	2019-10-22 10:04:26.170704200 +0300
@@ -5293,9 +5293,15 @@
 
 # first curses header check
 ac_save_cppflags="$CPPFLAGS"
-if test "$cross_compiling" = no; then
-  CPPFLAGS="$CPPFLAGS -I/usr/include/ncursesw"
-fi
+case $host_os in
+    mingw*)
+    ;;
+    *)
+      if test "$cross_compiling" = no; then
+        CPPFLAGS="$CPPFLAGS -I/usr/include/ncursesw"
+      fi
+    ;;
+esac
 
 AC_CHECK_HEADERS(curses.h ncurses.h)
 
