never defined.
It was used at some point to add -Wuninitialized to debug flags, 
but not any more. If there is still need to add -Wunitialized,
it can be added directly to $global_warnings.


BUILD/compile-amd64-debug-max-no-ndb:
  Remove a no-op.
BUILD/compile-amd64-debug-max:
  Remove a no-op.
BUILD/compile-darwin-mwcc:
  Remove a no-op.
BUILD/compile-pentium-debug-max-no-embedded:
  Remove a no-op.
BUILD/compile-pentium-debug-max-no-ndb:
  Remove a no-op.
BUILD/compile-pentium-debug-max:
  Remove a no-op.
BUILD/compile-pentium-debug-openssl:
  Remove a no-op.
BUILD/compile-pentium-debug-yassl:
  Remove a no-op.
BUILD/compile-pentium-debug:
  Remove a no-op.
BUILD/compile-pentium-mysqlfs-debug:
  Remove a no-op.
BUILD/compile-pentium-valgrind-max:
  Remove a no-op.
BUILD/compile-pentium64-debug-max:
  Remove a no-op.
BUILD/compile-pentium64-debug:
  Remove a no-op.
BUILD/compile-pentium64-valgrind-max:
  Remove a no-op.
BUILD/compile-ppc-debug-max-no-ndb:
  Remove a no-op.
BUILD/compile-ppc-debug-max:
  Remove a no-op.
BUILD/compile-ppc-debug:
  Remove a no-op.