I apologize if this is not the correct moment-place to deal with this old version. I'm trying to compile the GHC-3.02 version using ghc-2.10 binaries, happy-1.6 binaries on a i386-unknown-linux. In the future I would like to hack with it. I had to modify the file ghc/run_time/main/Signals.lc because it used a non-existing structure, named "struct sigcontext_struct" instead of "struct sigcontext". Main problem arise when linking. If I'm not wrong, the output from Haskell code are "C" files. They are compiled and linked by the C compiler. At the final linking step, the linker shows me unresolved references to symbols: "_fxstat","_lxstat" or "__setmjmp". After inspecting the code, on directory ghc/lib/cbits/openFile.c [...], I realized this belong to C functions fstat(),lstat() and setjmp() . These libraries are implicitly included by libc, I think. Any C-program links without problem,when compiled by invoking explictly "gcc", but I seems the ghc-2.10 compiler not to find the libc (and so his sub-components ). Does any body suggest me what I can do to perform a good compiling ? What parameters should I modify and where ? In directory mk ? Where lasgow-haskell-users@haskell.org else ?