#9657: I found a duplicate definition for symbol: __x86.get_pc_thunk.bx -------------------------------------+------------------------------------- Reporter: nomeata | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Resolution: | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Unknown Type of failure: Compile- | Blocked By: time crash | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by rzetterberg): My comment disappeared, so I'll try again! I encountered the same problem with a library I'm developing. My library uses a C++ static library that uses some Qt functionality. Qt has a tool called qmake that can generate makefiles for Qt-projects. When I looked at symbols in the library with the nm tool I saw that for each object file included __x86.get_pc_thunk.bx was exported. I looked at the generated makefile and saw that -fPIC was added to CFLAGS and CXXFLAGS. Which I thought was wierd since I'm building a static library. I removed -fPIC from CFLAGS and CXXFLAGS and rebuilt the library. When I looked at the symbols again __x86.get_pc_thunk.bx was not exported. I then ran {{{ cabal clean cabal configure cabal build }}} '''And my build was successful!''' I looked at the library that fails for you and I saw that in the cabal- file -fPIC is added to cc-options: https://github.com/coreyoconnor/vty/blob/master/vty.cabal#L117 Maybe that's the source of the problem? I'm no expert but it seems that this a library bug and not a ghc bug. Hopefully this saves the ghc devs and OP some time. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9657#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler