AC_CACHE_CHECK([for ftello], [gl_cv_func_ftello],
[
AC_TRY_LINK([#include <stdio.h>], [ftello (stdin);],
[gl_cv_func_ftello=yes], [gl_cv_func_ftello=no])
])
AC_CACHE_CHECK([for ftello], [gl_cv_func_ftello],
[
AC_TRY_LINK([#include <stdio.h>], [ftello (stdin);],
[gl_cv_func_ftello=yes], [gl_cv_func_ftello=no])
])