On macOS high sierra with Xcode 92 ./configure --without-gssapi --with-openssl=/usr/local/opt/openssl --enable-full-report --enable-developer bugs with checking for json library... yes checking for library containing json_object_new_int64... -ljson-c checking for zlib library... configure: error: include/zlib.h not found. I don't know where is the problem (i.e. bind or macOS) and of course there is a zlib.h in the SDK include.