Cf. https://github.com/curl/curl/issues/14747. - This was already removed from CURL git today, breaking this project. - "Those symbols have been deprecated for over 17 years." - Use in curlpp: https://github.com/search?q=repo%3Ajpbarrette%2Fcurlpp%20CURLOPT_CLOSEPOLICY&type=code
Cf. curl/curl#14747.