build: optionally static link boost (#2628)

cmake/compile_definitions/macos.cmake

@@ -13,7 +13,9 @@ foreach(dir ${MACOS_LINK_DIRECTORIES})
     endif()
 endforeach()
 
-ADD_DEFINITIONS(-DBOOST_LOG_DYN_LINK)
+if(NOT BOOST_USE_STATIC AND NOT FETCH_CONTENT_BOOST_USED)
+    ADD_DEFINITIONS(-DBOOST_LOG_DYN_LINK)
+endif()
 
 list(APPEND SUNSHINE_EXTERNAL_LIBRARIES
         ${APP_KIT_LIBRARY}
@@ -24,9 +26,6 @@ list(APPEND SUNSHINE_EXTERNAL_LIBRARIES
         ${FOUNDATION_LIBRARY}
         ${VIDEO_TOOLBOX_LIBRARY})
 
-set(PLATFORM_INCLUDE_DIRS
-        ${Boost_INCLUDE_DIR})
-
 set(APPLE_PLIST_FILE "${SUNSHINE_SOURCE_ASSETS_DIR}/macos/assets/Info.plist")
 
 # todo - tray is not working on macos