Move comment so it is not emitted
@@ -660,7 +660,8 @@ HAVE_R=0
USE_R=0
RCPP_PATH=0
RINSIDE_PATH=0
-AC_ARG_ENABLE(r, # Drop this? Almost guaranteed to fail.
+# Drop this? Almost guaranteed to fail.
+AC_ARG_ENABLE(r,
AS_HELP_STRING([--enable-r],
[Enable calling R language]),
[
