[Xapian-tickets] [Xapian] #725: replace output.h macro magic with template magic

[Xapian]

#725: replace output.h macro magic with template magic
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        Reporter:  olly         |      Owner:  olly
            Type:  enhancement  |     Status:  new
        Priority:  normal       |  Milestone:  1.4.x
       Component:  Other        |    Version:  git master
        Severity:  normal       |   Keywords:
      Blocked By:               |   Blocking:
Operating System:  All          |
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 I replaced `common/output.h` and `common/output-internal.h` with a single
 template in [feb4ce4011f437e81b3d5a05f239d6735491adfc/git].

 This needs C++11, but GCC 4.7 doesn't seem to handle this case, and
 despite spending a while trying a lot of different approaches, I can't get
 this to work properly with GCC 4.7.

 Aside from this issue, GCC 4.7 has seemed a sensible minimum requirement
 for 1.4.x, as it has decent C++11 support in general, and so isn't too
 onerous to code for.  It's the newest GCC version in Debian wheezy (now in
 LTS support), which is a motivation for supporting it.

 This doesn't seem enough of an issue to bump the GCC requirment over, so
 I'm going to revert this commit, and am opening this ticket so we remember
 to reapply it to master once we create a 1.4 branch.

 Marking as 1.4.x, not because we'd apply it to 1.4.x, but so I don't
 forget about this.

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Ticket URL: <https://trac.xapian.org/ticket/725>
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