Hi,
I am trying to generate External-Core files for the GHC libraries. I need
these files as I am working on an interpreter for Haskell (by interpreting
External-core).
I have tried following the README and HOWTO files of both the extcore and
linkcore packages. Unfortunately, I have been unable to
create the files. I had hoped it would be as simple as adding the flag
"-fext-core" to "GhcLibHcOpts" in "mk/build.mk", but this did not work. I
got
a panic error. I have tried on a variety of versions (6.10, 6.12, 7.0 and
now 7.4), but have been unable to create the files. Have anyone
tried to do this before. Did you succeed? If so, what did you do? If not,
do you have any suggestions to something I should try?
The error I get when attempting on ghc 7.4.1:
----------------------------------------------------------------
ghc-stage1: panic! (the 'impossible' happened)
(GHC version 7.4.1 for x86_64-unknown-linux):
MkExternalCore died: make_lit
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
make[2]: *** [libraries/base/dist-install/build/GHC/Num.o] Error 1
make[1]: *** [all_libraries] Error 2
make[1]: Leaving directory `/home/khs/documents/project/ghc741/ghc-7.4.1'
make: *** [all] Error 2
---------------------------------------------------------------
An alternative for me would be to use the GHC API to compile modules.
However, I have been unsuccessful at using this method
to compile the GHC libraries. I attempted to use the Cabal API to get the
necessary information from the .cabal files, and compile the
modules with compileToCoreSimplified and then create an own External-core
like language from the result. So, does anyone have a
suggestion as to what method I should be using to do this?
Thanks,
Knut Halvor
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