[GHC] #9498: GHC links against unversioned .so files

[GHC]

#9498: GHC links against unversioned .so files
-------------------------------------+-------------------------------------
        Reporter:  Kritzefitz        |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.6.3
  (Linking)                          |
      Resolution:                    |             Keywords:  Debian
Operating System:  Linux             |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:  10458             |             Blocking:  9237
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by simonmar):

 > Is the C library going to be a static (archive) or da dynamic (shared
 object) library?

 Usually both, so that you can use `-optl-static` if you want.  The `-dev`
 package of a C library normally includes both the unversioned `.so` and
 the `.a`.

 Remember that GHC links static Haskell packages but dynamic C libraries by
 default.

 > If it is the latter then I think it would still work with comment:16 and
 if we pass a linker flag (something along the lines of copy all DT_NEEDED
 tags for C libraries from the dummy SO into the executable) the
 performance impact would be small.

 Did you know the code in `Linker.lhs` is only used for GHCi and not
 linking of standalone executables?  I have a suspicion that there's some
 confusion here.  There is no "dummy SO" when linking a standalone
 executable.

 Since you have a design in mind, maybe it would be good to flesh it out in
 a wiki page so we can discuss with more precision?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9498#comment:25>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler