Currently mongoc built with mingw on Windows will fail compilation due to missing symbols for native SSL&SASL.

See:

• https://github.com/jeroenooms/mongolite/blob/master/src/mongoc/mongoc-config.h#L138-L140
• https://github.com/jeroenooms/mongolite/commit/40d39124ab829445ad562fd6258edf4958d920e2#diff-a7b5127526939a6ea953d58733aade26R35
• https://github.com/curl/curl/blob/master/lib/vtls/schannel.h#L59-L73