#18156: XCode 6.3 broken
--------------------------+------------------------
       Reporter:  vbraun  |        Owner:
           Type:  defect  |       Status:  new
       Priority:  major   |    Milestone:  sage-6.6
      Component:  build   |   Resolution:
       Keywords:          |    Merged in:
        Authors:          |    Reviewers:
Report Upstream:  N/A     |  Work issues:
         Branch:          |       Commit:
   Dependencies:          |     Stopgaps:
--------------------------+------------------------

Comment (by fbissey):

 Just tried a clean with sources that I currently have around on my mac
 (6.6.beta5) and it failed to build gcc too, not during what I would call
 bootstraping, but I am guessing that's what you are talking about because
 of the message.
 {{{
 Comparing stages 2 and 3
 warning: gcc/cc1-checksum.o differs
 warning: gcc/cc1plus-checksum.o differs
 Bootstrap comparison failure!
 gcc/asan.o differs
 gcc/attribs.o differs
 gcc/bitmap.o differs
 gcc/c/c-decl.o differs
 gcc/cfg.o differs
 gcc/coverage.o differs
 gcc/cp/class.o differs
 gcc/cp/semantics.o differs
 gcc/cp/tree.o differs
 gcc/dse.o differs
 gcc/dwarf2out.o differs
 gcc/except.o differs
 gcc/fortran/trans-common.o differs
 gcc/ggc-common.o differs
 gcc/ipa-profile.o differs
 gcc/ira-color.o differs
 gcc/ira-costs.o differs
 gcc/loop-unroll.o differs
 gcc/lto-streamer-in.o differs
 gcc/lto-streamer-out.o differs
 gcc/passes.o differs
 gcc/plugin.o differs
 gcc/postreload-gcse.o differs
 gcc/statistics.o differs
 gcc/trans-mem.o differs
 gcc/tree-cfg.o differs
 gcc/tree-eh.o differs
 gcc/tree-ssa-ccp.o differs
 gcc/tree-ssa-coalesce.o differs
 gcc/tree-ssa-dom.o differs
 gcc/tree-ssa-live.o differs
 gcc/tree-ssa-loop-ivopts.o differs
 gcc/tree-ssa-phiopt.o differs
 gcc/tree-ssa-pre.o differs
 gcc/tree-ssa-reassoc.o differs
 gcc/tree-ssa-threadupdate.o differs
 gcc/tree-ssa-uncprop.o differs
 gcc/tree-vectorizer.o differs
 gcc/valtrack.o differs
 gcc/vtable-verify.o differs
 make[5]: *** [compare] Error 1
 make[4]: *** [stage3-bubble] Error 2
 make[3]: *** [all] Error 2
 }}}
 Since when is a difference between stage 2 and stage 3 an automatic
 failure?

--
Ticket URL: <http://trac.sagemath.org/ticket/18156#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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