added flto to link options

Author: samwyss

CMakeLists.txt

@@ -17,6 +17,7 @@ if (CMAKE_BUILD_TYPE STREQUAL "Debug")
     add_compile_definitions(SPDLOG_ACTIVE_LEVEL=SPDLOG_LEVEL_DEBUG)
 elseif (CMAKE_BUILD_TYPE STREQUAL "Release")
     add_compile_options(-O3 -DNDEBUG -Wall -march=native -mtune=native -ffast-math -flto)
+    add_link_options(-flto)
     add_compile_definitions(SPDLOG_ACTIVE_LEVEL=SPDLOG_LEVEL_OFF)
 elseif (CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")
     add_compile_options(-O2 -g3 -DNDEBUG -Wall -march=native -mtune=native -ffast-math -fno-omit-frame-pointer)