Link errors when using the GHC API

[Bas van Dijk]

Dear GHC hackers,

I would like to experiment with the GHC API. However I get link errors when 
using it. For example:

---------------------------------------------------------------------
$ ghci -package ghc
   ___         ___ _
  / _ \ /\  /\/ __(_)
 / /_\// /_/ / /  | |      GHC Interactive, version 6.6, for Haskell 98.
/ /_\\/ __  / /___| |      http://www.haskell.org/ghc/
\____/\/ /_/\____/|_|      Type :? for help.

Loading package base ... linking ... done.
Loading package template-haskell ... linking ... done.
Loading package readline-1.0 ... linking ... done.
Loading package unix-1.0 ... linking ... done.
Loading package Cabal-1.1.6 ... linking ... done.
Loading package regex-base-0.71 ... linking ... done.
Loading package regex-posix-0.71 ... linking ... done.
Loading package regex-compat-0.71 ... linking ... done.
Loading package haskell98 ... linking ... done.
ghc-6.6: /usr/lib/ghc-6.6/HSghc.o: unknown symbol 
`Cabalzm1zi1zi6_DistributionziPackage_a_closure'
Loading package ghc-6.6 ... linking ... ghc-6.6: unable to load package 
`ghc-6.6'
---------------------------------------------------------------------

I also get this when compiling for example the following module testGHC.hs:

---------------------------------------------------------------------
module Main where

import qualified GHC
import DynFlags (defaultDynFlags)

main = GHC.defaultErrorHandler defaultDynFlags $ putStrLn "Hello World"
---------------------------------------------------------------------

---------------------------------------------------------------------
$ ghc -package ghc --make testGHC
[1 of 1] Compiling Main             ( testGHC.hs, testGHC.o )
Linking testGHC ...
/usr/lib/ghc-6.6/libHSghc.a(HeaderInfo.o): In function `r6iZ_info':
: undefined reference to 
`Cabalzm1zi1zi6_LanguageziHaskellziExtension_optional_info'
/usr/lib/ghc-6.6/libHSghc.a(HeaderInfo.o): In function `s6r9_info':
: undefined reference to 
`Cabalzm1zi1zi6_LanguageziHaskellziExtension_zdwshowsPrec_info'
/usr/lib/ghc-6.6/libHSghc.a(HeaderInfo.o): In function `s6sJ_info':
: undefined reference to `Cabalzm1zi1zi6_DistributionziCompiler_lvl31_info'
/usr/lib/ghc-6.6/libHSghc.a(HeaderInfo.o): In function `s6sN_info':
: undefined reference to `Cabalzm1zi1zi6_DistributionziCompiler_zddEq_closure'
/usr/lib/ghc-6.6/libHSghc.a(HeaderInfo.o): In function `s6ID_0_alt':
: undefined reference to `Cabalzm1zi1zi6_DistributionziCompiler_polyzugo_info'
/usr/lib/ghc-6.6/libHSghc.a(HeaderInfo.o): In function `s6IG_0_alt':
: undefined reference to 
`Cabalzm1zi1zi6_DistributionziCompiler_polyzugo1_info'
/usr/lib/ghc-6.6/libHSghc.a(HeaderInfo.o):(.rodata+0x0): undefined reference 
to `Cabalzm1zi1zi6_LanguageziHaskellziExtension_optional_closure'
/usr/lib/ghc-6.6/libHSghc.a(HeaderInfo.o):(.rodata+0x1cc): undefined reference 
to `Cabalzm1zi1zi6_LanguageziHaskellziExtension_zdwshowsPrec_closure'
/usr/lib/ghc-6.6/libHSghc.a(HeaderInfo.o):(.rodata+0x1dc): undefined reference 
to `Cabalzm1zi1zi6_DistributionziCompiler_lvl31_closure'
/usr/lib/ghc-6.6/libHSghc.a(PackageConfig.o): In function `s23t_1_alt':
: undefined reference to `Cabalzm1zi1zi6_DistributionziPackage_a_closure'
/usr/lib/ghc-6.6/libHSghc.a(Packages.o): In function `s77S_1_alt':
: undefined reference to `Cabalzm1zi1zi6_DistributionziPackage_a_closure'
/usr/lib/ghc-6.6/libHSghc.a(Packages.o): In function `s79E_1_alt':
: undefined reference to `Cabalzm1zi1zi6_DistributionziPackage_a_closure'
/usr/lib/ghc-6.6/libHSghc.a(Packages.o): In function `s7i7_1_alt':
: undefined reference to `Cabalzm1zi1zi6_DistributionziPackage_a_closure'
/usr/lib/ghc-6.6/libHSghc.a(Packages.o): In function `s7vI_1_alt':
: undefined reference to `Cabalzm1zi1zi6_DistributionziPackage_a_closure'
/usr/lib/ghc-6.6/libHSghc.a(Packages.o): In function `s7yi_info':
: undefined reference to `Cabalzm1zi1zi6_DistributionziPackage_zeze_info'
/usr/lib/ghc-6.6/libHSghc.a(Packages.o): In function `s7GC_1_alt':
: undefined reference to `Cabalzm1zi1zi6_DistributionziPackage_a_closure'
/usr/lib/ghc-6.6/libHSghc.a(Linker.o): In function `s8TZ_1_alt':
: undefined reference to `Cabalzm1zi1zi6_DistributionziPackage_a_closure'
/usr/lib/ghc-6.6/libHSghc.a(Linker.o): In function `s8Vv_1_alt':
: undefined reference to `Cabalzm1zi1zi6_DistributionziPackage_a_closure'
/usr/lib/ghc-6.6/libHSghc.a(Finder.o): In function `s7l2_1_alt':
: undefined reference to `Cabalzm1zi1zi6_DistributionziPackage_a_closure'
collect2: ld returned 1 exit status
---------------------------------------------------------------------

I would like to know what is causing this and how I can fix it? Also, should I 
file a bugreport?

Greetings,

Bas van Dijk