[GHC] #9348: "Symbol not found" when using a shared library

[GHC]

#9348: "Symbol not found" when using a shared library
-----------------------------------+-----------------------------------
        Reporter:  alex.davis      |                   Owner:  simonmar
            Type:  bug             |                  Status:  new
        Priority:  normal          |               Milestone:
       Component:  Runtime System  |                 Version:  7.8.3
        Keywords:                  |  Differential Revisions:
Operating System:  MacOS X         |            Architecture:  x86
 Type of failure:  None/Unknown    |              Difficulty:  Unknown
       Test Case:                  |              Blocked By:
        Blocking:                  |         Related Tickets:
-----------------------------------+-----------------------------------
 I'm trying to make a shared library from a simple program. It works fine
 on my Windows box, but gives an error on Mac OS X. Furthermore, the error
 seems to be generated from one of GHC's shared libraries.

 What happens is this. I compile my shared library with GHC, which works
 fine. But when I try to use it from another program (specifically, R), I
 get an error message containing the following:
 Symbol not found: _stg_IND_STATIC_info
   Referenced from: /usr/local/lib/ghc-7.8.3/ghc-prim-0.3.1.0/libHSghc-
 prim-0.3.1.0-ghc7.8.3.dylib
   Expected in: flat namespace
  in /usr/local/lib/ghc-7.8.3/ghc-prim-0.3.1.0/libHSghc-
 prim-0.3.1.0-ghc7.8.3.dylib

 More details:
 The program I'm trying to use is R. In R, you load a shared library with
 the command "dyn.load". When I try this, the command I use is
 "dyn.load('final.dylib')", and the full error message is what follows:
 ---
 Error in dyn.load("final.dylib") :
   unable to load shared object '/Users/alexanderdavis/Desktop/illustrate
 bug copy/final.dylib':
   dlopen(/Users/alexanderdavis/Desktop/illustrate bug copy/final.dylib,
 6): Symbol not found: _stg_IND_STATIC_info
   Referenced from: /usr/local/lib/ghc-7.8.3/ghc-prim-0.3.1.0/libHSghc-
 prim-0.3.1.0-ghc7.8.3.dylib
   Expected in: flat namespace
  in /usr/local/lib/ghc-7.8.3/ghc-prim-0.3.1.0/libHSghc-
 prim-0.3.1.0-ghc7.8.3.dylib
 ---

 As I said, I have done all of this with no trouble on Windows. I compiled
 into a DLL, loaded the program into R, and was able to use the functions
 in it.

 My Mac OS version is 10.9.4.

 My R version is 3.0.2. When loaded, it displays "Platform: x86_64-apple-
 darwin10.8.0 (64-bit)", but Sys.getev("R_ARCH") returns the empty string.

 Command used for compiler:
 ghc --make -dynamic -fPIC -shared SumRoots.hs StartEnd.c -o final.dylib

 The code is attached. It is from a blog post by Neil Mitchelll (author of
 HLint) about calling Haskell from R:
 http://neilmitchell.blogspot.com/2011/10/calling-haskell-from-r.html

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9348>
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