+# If the currently compiled libguestfs doesn't support
+# ntfs-3g/ntfsprogs then we cannot create a Windows phony image.
+# Nothing actually uses windows.img in the standard build so we can
+# just 'touch' it and emit a warning.
+if ! ../run ../fish/guestfish -a /dev/null run : available "ntfs3g ntfsprogs"; then
+ echo "***"
+ echo "Warning: cannot create windows.img because there is no NTFS"
+ echo "support in this build of libguestfs. Just touching the output"
+ echo "file instead."
+ echo "***"
+ touch windows.img
+ exit 0
+fi
+