src/mongoc/mongoc-stream-tls-openssl.c: In function ‘mongoc_stream_tls_openssl_new’:
src/mongoc/mongoc-stream-tls-openssl.c:659:7: warning: implicit declaration of function ‘X509_VERIFY_PARAM_set_hostflags’ [-Wimplicit-function-declaration]
       X509_VERIFY_PARAM_set_hostflags (param,
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/mongoc/mongoc-stream-tls-openssl.c:663:10: warning: implicit declaration of function ‘X509_VERIFY_PARAM_set1_ip_asc’ [-Wimplicit-function-declaration]
          X509_VERIFY_PARAM_set1_ip_asc (param, host);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/mongoc/mongoc-stream-tls-openssl.c:665:10: warning: implicit declaration of function ‘X509_VERIFY_PARAM_set1_host’ [-Wimplicit-function-declaration]
          X509_VERIFY_PARAM_set1_host (param, host, 0);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~