I believe this issue was triggered by a change in the meaning of the flags, so that -a no longer means "all". I looked at it briefly and considered this a silly regression; the previous options covered all use-cases including that of the person requesting the change. Maybe I misunderstood. The bug closed was 572077, in version 7.4.16. My understanding was that the default of building all architectures could fail if there was an unbuildable architecture (naturally). There was a flag to smart-select only those that were compatible that solved this problem. The result was removing the possibility to build all - such as building an i386 package on 64-bit. There have been several changes to architecture handling since then though.
I don't know if the tar case can be handled correctly, but possibly dpkg-architecture can be used as a workaround in the other cases mentioned - it worked for me. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org