Add Jamfile, make CMake scripts Boost compliant

Summary: related to T15996

Reviewers: ivica, korina

Reviewed By: ivica

Subscribers: iljazovic, miljen

Differential Revision: https://repo.mireo.local/D33480

example/CMakeLists.txt

@@ -1,16 +1,17 @@
-cmake_minimum_required(VERSION 3.15)
+#
+# Copyright (c) 2025 Ivica Siladic, Bruno Iljazovic, Korina Simicevic
+#
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE or copy at http://www.boost.org/LICENSE_1_0.txt)
+#
 
-project(async-mqtt5-examples CXX)
+cmake_minimum_required(VERSION 3.8...3.20)
 
-include(../cmake/project-is-top-level.cmake)
-
-if(PROJECT_IS_TOP_LEVEL)
-  find_package(async-mqtt5 REQUIRED)
-endif()
+project(async-mqtt5-examples LANGUAGES CXX)
 
 function(add_example name)
   add_executable("${name}" ${ARGN})
-  target_link_libraries("${name}" PRIVATE Async::MQTT5)
+  target_link_libraries("${name}" PRIVATE Boost::mqtt5)
   string(FIND "${example_name}" "tls" found_tls)
   if(found_tls GREATER -1)
     target_link_libraries("${name}" PRIVATE OpenSSL::SSL)

example/hello_world_in_coro_multithreaded_env.cpp

@@ -21,6 +21,7 @@
 #include <boost/asio/strand.hpp>
 #include <boost/asio/thread_pool.hpp>
 
+#include <cassert>
 #include <iostream>
 #include <string>
 #include <thread>

example/hello_world_in_multithreaded_env.cpp

@@ -18,6 +18,7 @@
 #include <boost/asio/strand.hpp>
 #include <boost/asio/thread_pool.hpp>
 
+#include <cassert>
 #include <iostream>
 #include <string>
 #include <thread>