[GHC] #13739: very slow linking of executables with ld.bfd < 2.27

[GHC]

#13739: very slow linking of executables with ld.bfd < 2.27
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        Reporter:  duog              |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  high              |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.2.1-rc2
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  13541             |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by duog):

 * related:   => 13541


Comment:

 I don't know whether anyone has investigated whether there is anything we
 are doing which is exasperating the problem.
 Executables produced by removing -Wl,--gc-sections from the linker
 invocation look like they're pulling in most of the archives. This does
 not occur with 8.0.2. I will see if it happens with gold once support it
 lands in the ghc-8.2 branch.

 I would like to see the configure scripts disable split sectioned
 libraries if the linker is ld.bfd < 27, or at least warn that the user is
 in for an unpleasant experience.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13739#comment:28>
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