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

[GHC]

#9498: GHC links against unversioned .so files
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              Reporter:  Kritzefitz  |            Owner:
                  Type:  feature     |           Status:  new
  request                            |        Milestone:
              Priority:  low         |          Version:  7.6.3
             Component:  Compiler    |         Keywords:  Debian
  (FFI)                              |     Architecture:  Unknown/Multiple
            Resolution:              |       Difficulty:  Unknown
      Operating System:  Linux       |       Blocked By:
       Type of failure:  Other       |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by Kritzefitz):

 I will demonstrate with the curl package:

 Assuming I have installed the libcurl3 package but not the libcurl-dev
 package.
 This means I have the following shared libraries belonging to curl
 installed:
 /usr/lib/i386-linux-gnu/libcurl-gnutls.so.3
 /usr/lib/i386-linux-gnu/libcurl.so.3

 (I actually have some curl version 4 libraries installed, but those
 shouldn't matter now.)

 Then I start ghci and try to use curl:

 {{{
 $ ghci
 GHCi, version 7.6.3: http://www.haskell.org/ghc/  :? for help
 Loading package ghc-prim ... linking ... done.
 Loading package integer-gmp ... linking ... done.
 Loading package base ... linking ... done.
 Prelude> import Network.Curl
 Prelude Network.Curl> curlGet "http://weltraumschlangen.de/" []
 Loading package array-0.4.0.1 ... linking ... done.
 Loading package deepseq-1.3.0.1 ... linking ... done.
 Loading package bytestring-0.10.0.2 ... linking ... done.
 Loading package containers-0.5.0.0 ... linking ... done.
 Loading package curl-1.3.8 ... can't load .so/.DLL for: libcurl.so
 (libcurl.so: cannot open shared object file: No such file or directory)
 Prelude Network.Curl>
 }}}

 So it seems it tries to load libcurl.so, which is contained in libcurl-
 dev, instead of libcurl.so.3.
 It's not working when compiling a file either:

 test.hs:

 {{{
 import Network.Curl

 main = curlGet "http://weltraumschlangen.de/" []
 }}}

 compiling:
 {{{
 $ ghc --make test.hs
 [1 of 1] Compiling Main             ( test.hs, test.o )
 Linking test ...
 /usr/bin/ld: cannot find -lcurl
 collect2: error: ld returned 1 exit status
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9498#comment:3>
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