Requirements

Compiler

mqtt_client_cpp requires C++14 compiler.

Boost Libraries

mqtt_client_cpp requires the Boost Libraries 1.57.0 or later (See #33).

If you want to execute tests of mqtt_client_cpp, it requires the Boost Libraries 1.59.0 or later.

OpenSSL

If you want to use TLS features, OpenSSL 1.0.2* is required. See Config#mqtt_no_tls

Beast

If you want to use WebSocket, Beast is required. See Config#mqtt_use_ws

Update: Since the Boost Libraries version 1.66.0, it contains the Beast.