[GHC] #13583: configure.ac: handle AR=, NM= and other flags as arguments to ./configure

[GHC]

#13583: configure.ac: handle AR=, NM= and other flags as arguments to ./configure
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        Reporter:  slyfox            |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 The above commit does nothing about the ld issue. I think the best of the
 terrible options before us would be to.

 1. replace the logic which currently forces use of gold with a test
 looking for the broken bfd linker, falling off it is found.
 2. add some logic to look at the value of`LD` and try adding the
 appropriate flag to the C compiler flags to ensure that it is used

 I don't know the best way for the user to disable (2), as distribution
 packagers will almost certainly want to do. I suppose a `--disable-ld-
 cflags` configure option might work, but it seems terrible.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13583#comment:7>
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