--- fuzzylite/CMakeLists.txt.orig	2017-11-18 07:28:31 UTC
+++ fuzzylite/CMakeLists.txt
@@ -174,7 +174,7 @@ if(FL_BUILD_SHARED)
     set_target_properties(fl-shared PROPERTIES DEBUG_POSTFIX -debug)
     target_compile_definitions(fl-shared PRIVATE FL_EXPORT_LIBRARY)
     set_target_properties(fl-shared PROPERTIES VERSION 6.0)
-    target_link_libraries(fl-shared ${FL_LIBS})
+    target_link_libraries(fl-shared ${FL_LIBS} execinfo)
 endif()
 
 if(FL_BUILD_STATIC)