[bug #40225] Deterministic output ordering

[Josh Triplett]

URL:
  <http://savannah.gnu.org/bugs/?40225>

                 Summary: Deterministic output ordering
                 Project: make
            Submitted by: joshtriplett
            Submitted on: Wed 09 Oct 2013 03:07:11 PM PDT
                Severity: 3 - Normal
              Item Group: Enhancement
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: None
        Operating System: None
           Fixed Release: None
           Triage Status: None

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Details:

The new make -O option untangles the output of parallel builds; however, the
actual output still occurs in a nondeterministic order.  I'd love to see an
option to emit output in a deterministic order, ideally in the same order that
a non-parallel make would.  This would make it possible to diff two build logs
(for instance, to detect new or eliminated warning messages) without having to
serialize the build and sacrifice build performance.




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