I'm trying to build an application using "ghc -dynamic mywxapp.hs". Everything not involving wx compiles with dll linking. However, I can't build the required dynamic libraries for wxcore. Using "cabal install wxcore --enable-shared" gives the following: collect2: ld returned 1 exit status Creating library file: dist\build\libHSwxcore-0.12.1.6-ghc7.0.2.dll.a cabal: Error: some packages failed to install: wxcore-0.12.1.6 failed during the building phase. The exception was: ExitFailure 1 Using "cabal install wxcore --enable-shared --enable-split-objs" gives the following: E:\Tools\Haskell Platform\2011.2.0.0\mingw\bin\ld.exe: BFD (GNU Binutils) 2.20.51.20100613 internal error, aborting at ../../binutils-2.20.51/bfd/coffcode.h line 954 in handle_COMDAT E:\Tools\Haskell Platform\2011.2.0.0\mingw\bin\ld.exe: Please report this bug. cabal: Error: some packages failed to install: wxcore-0.12.1.6 failed during the building phase. The exception was: ExitFailure 1 Is it possible to fix?