-rename($Makefile,"$Makefile.bak") || die "unable to rename $Makefile\n" if -e $Makefile;
-rename("$Makefile.new",$Makefile) || die "unable to rename $Makefile.new\n";
+if ((compare($Makefile, "$Makefile.new"))
+ or file_newer('Configure', $Makefile)
+ or file_newer('config', $Makefile)
+ or file_newer('Makefile.org', $Makefile))
+ {
+ rename($Makefile,"$Makefile.bak") || die "unable to rename $Makefile\n" if -e $Makefile;
+ rename("$Makefile.new",$Makefile) || die "unable to rename $Makefile.new\n";
+ }
+else
+ { unlink("$Makefile.new"); }