A hopeful fix for bug lp:1322354

CMakeLists.txt

@@ -203,12 +203,17 @@ if( CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang" )
         set( CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   ${PIC_FLAG}" )
         set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${PIC_FLAG}" )
 
-        # Thou shalt not link vaporware and tell us it's a valid DSO (apple ld doesn't support it)
         if( NOT APPLE )
+            # Thou shalt not link vaporware and tell us it's a valid DSO (apple ld doesn't support it)
             set( CMAKE_SHARED_LINKER_FLAGS "${TO_LINKER},--no-undefined" )
             set( CMAKE_MODULE_LINKER_FLAGS "${TO_LINKER},--no-undefined" )
 
             set( CMAKE_EXE_LINKER_FLAGS_RELEASE "-s" )
+
+            # Defeat ELF's ability to use the GOT to replace locally implemented functions
+            # with ones from another module.
+            set( CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${TO_LINKER},-Bsymbolic" )
+            set( CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${TO_LINKER},-Bsymbolic" )
         endif()
 
     endif()