Set boot to a fixed version

CMakeLists.txt

@@ -23,17 +23,10 @@ include(FetchContent)
 
 set(BOOST_INCLUDE_LIBRARIES asio assert core endian json mqtt5 fusion optional random range smart_ptr spirit type_traits)
 set(BOOST_ENABLE_CMAKE ON)
-set(BOOST_NO_SYSTEM_PATHS TRUE)
 set(Boost_NO_SYSTEM_PATHS ON)
+set(BOOST_ROOT /usr/local/boost-1.89)
 
-include(FetchContent)
-FetchContent_Declare(
-    Boost
-    GIT_REPOSITORY  https://github.com/boostorg/boost.git
-    GIT_TAG         boost-1.89.0
-    GIT_SHALLOW     TRUE
-)
-
+find_package(Boost 1.89 REQUIRED COMPONENTS json mqtt5)
 # spdlog
 set(SPDLOG_USE_STD_FORMAT ON)
 FetchContent_Declare(
@@ -50,7 +43,7 @@ FetchContent_Declare(fmt
     URL     https://github.com/fmtlib/fmt/archive/refs/tags/10.2.1.zip
     URL_MD5 1bba4e8bdd7b0fa98f207559ffa380a3
 )
-FetchContent_MakeAvailable(fmt spdlog Boost)
+FetchContent_MakeAvailable(fmt spdlog)
 
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 # add_compile_definitions(BOOST_ASIO_ENABLE_HANDLER_TRACKING)

libs/mqtt_client.cpp

@@ -21,10 +21,7 @@
 #include <algorithm>
 #include <cstdint>
 #include <exception>
-#include <expected>
-#include <memory>
 #include <memory_resource>
-#include <optional>
 #include <spdlog/spdlog.h>
 
 // Adapter to use std::pmr::memory_resource with boost::json