Follow the reference to port the bootloader

cmake/project.cmake

@@ -16,8 +16,8 @@ target_compile_options(${TARGET_NAME} PRIVATE
 
     "$<$<AND:$<CONFIG:Debug>,$<COMPILE_LANGUAGE:C>>:-O0>"
     "$<$<AND:$<CONFIG:Debug>,$<COMPILE_LANGUAGE:CXX>>:-O0>"
-    "$<$<AND:$<NOT:$<CONFIG:Debug>>,$<COMPILE_LANGUAGE:C>>:-Os>"
-    "$<$<AND:$<NOT:$<CONFIG:Debug>>,$<COMPILE_LANGUAGE:CXX>>:-Os>"
+    "$<$<AND:$<NOT:$<CONFIG:Debug>>,$<COMPILE_LANGUAGE:C>>:-Os;-flto>"
+    "$<$<AND:$<NOT:$<CONFIG:Debug>>,$<COMPILE_LANGUAGE:CXX>>:-Os;-flto>"
 
 	-mcpu=cortex-m23
     )
@@ -30,6 +30,7 @@ target_link_options(${TARGET_NAME} PRIVATE
     --specs=nano.specs
     --specs=nosys.specs
     -Wl,--gc-sections
+    "$<$<NOT:$<CONFIG:Debug>>:-flto>"
     -Wl,--start-group -lc -lm -Wl,--end-group
     )