On 04 Jan 2023 02:01, Tsukasa OI wrote:
> +dnl Determine whether we have a known getopt prototype in unistd.h
> +dnl to make sure that we have correct getopt declaration on
> +dnl include/getopt.h.

this comment should note that this logic is kept in sync with other
projects like binutils/configure.ac.

otherwise lgtm, thanks
-mike