[GHC] #10981: Not detecting clang correctly

[GHC]

#10981: Not detecting clang correctly
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        Reporter:  erikd             |                Owner:  erikd
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.11
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Building GHC      |  Unknown/Multiple
  failed                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1336
       Wiki Page:                    |
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Comment (by Erik de Castro Lopo <erikd@…>):

 In [changeset:"96dc041a502754da475e38cb84ed2bb0e142d527/ghc" 96dc041/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="96dc041a502754da475e38cb84ed2bb0e142d527"
 Systools.hs: Improve detection of GCC and Clang

 Test Plan: Build on Debian using `--with-gcc=clang`

 Reviewers: austin, bgamari

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D1336

 GHC Trac Issues: #10981
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10981#comment:2>
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