Prefer local versions over code available externally (#1639)

src/ngraph/runtime/cpu/CMakeLists.txt

@@ -166,6 +166,14 @@ if (NGRAPH_CPU_ENABLE)
     endif()
     target_include_directories(cpu_backend SYSTEM PUBLIC libmkldnn)
     set_target_properties(cpu_backend PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${NGRAPH_BUILD_DIR})
+    if (NOT APPLE)
+        # CPU backend uses third-party libraries like Eigen that might be linked in and
+        # exported by other DSOs as well. In the absence of versioning, this could lead to the
+        # CPU backend picking up the wrong version or even multiple versions of the
+        # third-party library. -Bsymbolic-functions tells the linker to prefer the internal
+        # version inside cpu_backend over what is available through the global symbol table
+        set_property(TARGET cpu_backend APPEND PROPERTY LINK_FLAGS "-Wl,-Bsymbolic-functions")
+    endif()
 
     install(TARGETS cpu_backend LIBRARY DESTINATION ${NGRAPH_INSTALL_LIB})
 endif()