AC_CHECK_MEMBER([struct _IO_FILE._fileno],
[AC_DEFINE([HAVE_STRUCT__IO_FILE__FILENO], 1,
[Define to 1 if `_fileno' is a member of `struct _IO_FILE'.])],
AC_CHECK_MEMBER([struct _IO_FILE._fileno],
[AC_DEFINE([HAVE_STRUCT__IO_FILE__FILENO], 1,
[Define to 1 if `_fileno' is a member of `struct _IO_FILE'.])],