Use system boost anymore

Former-commit-id: 159bcdb3599fb72ddbd9b35b388ced78150deb03

core/cmake/DefineOptions.cmake

@@ -56,7 +56,7 @@ define_option(MILVUS_VERBOSE_THIRDPARTY_BUILD
         "Show output from ExternalProjects rather than just logging to files" ON)
 
 define_option(MILVUS_BOOST_VENDORED "Use vendored Boost instead of existing Boost. \
-Note that this requires linking Boost statically" ON)
+Note that this requires linking Boost statically" OFF)
 
 define_option(MILVUS_BOOST_HEADER_ONLY "Use only BOOST headers" OFF)
 

core/src/CMakeLists.txt

@@ -96,9 +96,9 @@ set(prometheus_lib
         )
 
 set(boost_lib
-        boost_system_static
-        boost_filesystem_static
-        boost_serialization_static
+        boost_system
+        boost_filesystem
+        boost_serialization
         )
 
 set(cuda_lib