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

[GHC]

#7062: Spurious undefined reference to `openpty'
---------------------------------+------------------------------------------
    Reporter:  simonmar          |       Owner:                  
        Type:  bug               |      Status:  new             
    Priority:  high              |   Milestone:  7.6.1           
   Component:  Compiler          |     Version:  7.4.2           
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
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Changes (by ivan.perez):

 * cc: ivan.perez@… (added)


Comment:

 I just hit this bug. I case it can help, here's my bit.

 I wrote a library that depends on `process`. When I install the library,
 no errors are reported.

 I have a program to test my library in `./BoardMain.hs`. The library
 modules are located in `../../src/`.

 If I install the library and compile the program with `-dynamic`, I get:
 {{{
 $ ghc -Wall --make BoardMain.hs  -dynamic 2>&1 > /dev/null
 /usr/lib/ghc/unix-2.5.1.0/libHSunix-2.5.1.0-ghc7.4.1.so: undefined
 reference to `openpty'
 collect2: ld returned 1 exit status
 }}}

 Using `-dynamic` and adding the library modules directly to the import
 path instead of using my library as a package, I get:
 {{{
 $ ghc -Wall --make BoardMain.hs -i../../src:. -dynamic 2>&1 > /dev/null
 $ ls -sh BoardMain
 188K BoardMain
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7062#comment:2>
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