[GHC] #7062: Spurious undefined reference to `openpty'

[GHC]

#7062: Spurious undefined reference to `openpty'
-------------------------------+--------------------------------------------
  Reporter:  simonmar          |          Owner:                  
      Type:  bug               |         Status:  new             
  Priority:  high              |      Milestone:  7.6.2           
 Component:  Compiler          |        Version:  7.4.2           
Resolution:                    |       Keywords:                  
        Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown      |     Difficulty:  Unknown         
  Testcase:                    |      Blockedby:                  
  Blocking:                    |        Related:                  
-------------------------------+--------------------------------------------

Comment(by trommler):

 Replying to [comment:23 markwright]:
 > Replying to [comment:21 trommler]:
 >
 > I added this patch to #3072 to add an rpath to the ghc core libs
 I built HEAD and the patch fixes the issue.

 The test, however, still fails with the same error. To fix that error we
 need to do the same thing in testsuite for Linux that we do for OS X and
 for Windows already: Set an environment variable to point ld.so to the
 freshly built libraries. Otherwise the system libraries will be used (if
 present) and this is not what we want in testsuite.

 For builds that link with --enable-new-dtags (.so contains both RUNPATH
 and RPATH) setting LD_LIBRARY_PATH would be sufficient. If only RPATH is
 set (--disable-new-dtags), however, LD_PRELOAD must be used to override
 RPATH. LD_PRELOAD works in both cases, so LD_PRELOAD should be set.

 I could create a patch for testsuite to implement that.

 Are there plans to merge markwright's patch into 7.6?

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7062#comment:24>
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