Unknown option: "-3" Unix manual page for curl_multi_cleanup. (host=minya system=Darwin)
curl_multi_cleanup(3)           libcurl Manual           curl_multi_cleanup(3)

NAME
       curl_multi_cleanup - close down a multi session

SYNOPSIS
       #include <curl/curl.h>

       CURLMcode curl_multi_cleanup( CURLM *multi_handle );

DESCRIPTION
       Cleans  up  and  removes a whole multi stack. It does not free or touch
       any individual easy handles in any way - they still need to  be  closed
       individually,  using  the  usual curl_easy_cleanup(3) way. The order of
       cleaning up should be:

       1 - curl_multi_remove_handle(3) before any easy handles are cleaned up

       2 - curl_easy_cleanup(3) can now be called independently since the easy
       handle is no longer connected to the multi handle

       3  -  curl_multi_cleanup(3)  should be called when all easy handles are
       removed

RETURN VALUE
       CURLMcode type, general libcurl multi interface error code. On success,
       CURLM_OK is returned.

SEE ALSO
       curl_multi_init(3),curl_easy_cleanup(3),curl_easy_init(3)

libcurl 7.54.0                 February 03, 2016         curl_multi_cleanup(3)