better error message for a windows perl 5.14

ByteLoader/bytecode.h

@@ -525,17 +525,22 @@ static int bget_swab = 0;
 # if (PERL_VERSION < 13) || ((PERL_VERSION == 13) && (PERL_SUBVERSION < 5))
 #  if defined(_WIN32) || (defined(__CYGWIN__) && (__GNUC__ > 3)) || defined(AIX)
 #   define BSET_cop_label(cop, arg)      /* Unlucky. Not exported with 5.12 and 5.14 */
-#   error "store_cop_label is not part of the public API for your perl. Try a perl <5.12 or >5.15"
+#   error "cop_label is not part of the public API for your perl. Try a perl <5.12 or >5.15"
 #  else
 #   define BSET_cop_label(cop, arg)	(cop)->cop_hints_hash = \
         Perl_store_cop_label(aTHX_ (cop)->cop_hints_hash, arg)
 #  endif
 # else /* officially added with 5.15.1 aebc0cbee */
 #  if  (PERL_VERSION > 15) || ((PERL_VERSION == 15) && (PERL_SUBVERSION > 0))
-#    define BSET_cop_label(cop, arg)	Perl_cop_store_label(aTHX_ (cop), arg, strlen(arg), 0)
+#   define BSET_cop_label(cop, arg)	Perl_cop_store_label(aTHX_ (cop), arg, strlen(arg), 0)
 #  else
-/* changed with 5.13.4-5 a77ac40c5b8 */
+/* changed (macro -> function) with 5.13.4-5 a77ac40c5b8. Windows still out of luck */
+#   if defined(_WIN32) || (defined(__CYGWIN__) && (__GNUC__ > 3)) || defined(AIX)
+#    define BSET_cop_label(cop, arg)
+#    error "cop_label is not part of the public API for your perl. Try a perl <5.12 or >5.15"
+#   else
 #    define BSET_cop_label(cop, arg)	Perl_store_cop_label(aTHX_ (cop), arg, strlen(arg), 0)
+#   endif
 #  endif
 # endif
 #endif