build: -Wno-stringop-overflow during LTO phase

Type: make
Change-Id: I735fa411366c41981e255921eceb18ebbb4b5fe1
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/cmake/library.cmake b/src/cmake/library.cmake
index c80d7f2..fbb2c68 100644
--- a/src/cmake/library.cmake
+++ b/src/cmake/library.cmake
@@ -51,6 +51,9 @@
      target_compile_options (${lib} PRIVATE "-ffunction-sections")
      target_compile_options (${lib} PRIVATE "-fdata-sections")
      target_link_libraries (${lib} "-Wl,--gc-sections")
+     if(compiler_flag_no_stringop_overflow)
+       target_link_libraries (${lib} "-Wno-stringop-overflow")
+     endif()
   endif()
 
   if(ARG_MULTIARCH_SOURCES)