cd mongo-cxx-driver/build
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_STANDARD=17 ..
make

-- The CXX compiler identification is GNU 8.2.0
-- The C compiler identification is GNU 8.2.0
-- Auto-configuring bsoncxx to use C++17 std library polyfills since C++17 is active and user didn't specify otherwise
{code]

Running make fails with:

{code:java}
In file included from /github/mongo-cxx-driver/src/mongocxx/private/client_session.hh:24,
                 from /github/mongo-cxx-driver/src/mongocxx/bulk_write.cpp:25:
/github/mongo-cxx-driver/src/mongocxx/options/private/transaction.hh: In member function 'std::optional<mongocxx::v_noabi::read_concern> mongocxx::v_noabi::options::transaction::impl::read_concern() const':
/github/mongo-cxx-driver/src/mongocxx/options/private/transaction.hh:64:88: error: could not convert '{std::make_unique(_Args&& ...) [with _Tp = mongocxx::v_noabi::read_concern::impl; _Args = {_mongoc_read_concern_t*}; typename std::_MakeUniq<_Tp>::__single_object = std::unique_ptr<mongocxx::v_noabi::read_concern::impl>]()}' from '<brace-enclosed initializer list>' to 'std::optional<mongocxx::v_noabi::read_concern>'
         return {stdx::make_unique<read_concern::impl>(libmongoc::read_concern_copy(rc))};
                                                                                        ^
/github/mongo-cxx-driver/src/mongocxx/options/private/transaction.hh: In member function 'std::optional<mongocxx::v_noabi::write_concern> mongocxx::v_noabi::options::transaction::impl::write_concern() const':
/github/mongo-cxx-driver/src/mongocxx/options/private/transaction.hh:77:90: error: could not convert '{std::make_unique(_Args&& ...) [with _Tp = mongocxx::v_noabi::write_concern::impl; _Args = {_mongoc_write_concern_t*}; typename std::_MakeUniq<_Tp>::__single_object = std::unique_ptr<mongocxx::v_noabi::write_concern::impl>]()}' from '<brace-enclosed initializer list>' to 'std::optional<mongocxx::v_noabi::write_concern>'
         return {stdx::make_unique<write_concern::impl>(libmongoc::write_concern_copy(wc))};
                                                                                          ^
/github/mongo-cxx-driver/src/mongocxx/options/private/transaction.hh: In member function 'std::optional<mongocxx::v_noabi::read_preference> mongocxx::v_noabi::options::transaction::impl::read_preference() const':
/github/mongo-cxx-driver/src/mongocxx/options/private/transaction.hh:90:89: error: could not convert '{std::make_unique(_Args&& ...) [with _Tp = mongocxx::v_noabi::read_preference::impl; _Args = {_mongoc_read_prefs_t*}; typename std::_MakeUniq<_Tp>::__single_object = std::unique_ptr<mongocxx::v_noabi::read_preference::impl>]()}' from '<brace-enclosed initializer list>' to 'std::optional<mongocxx::v_noabi::read_preference>'
         return {stdx::make_unique<read_preference::impl>(libmongoc::read_prefs_copy(rp))};