问题
I've tried -fvia-C and the -pgms, but none of them manage to create an executable, splurting out lots of errors like Warning: retaining unknown function ``L4' in output from C compiler.
回答1:
GHC can't be used as a cross-compiler out of the box. The build system has some support for cross-compilation which we're currently working on improving. For more information, see CrossCompilation on the GHC wiki. I suggest taking further discussion to the glasgow-haskell-users or cvs-ghc mailing lists.
来源：https://stackoverflow.com/questions/3517387/cross-compiling-haskell-code-through-ghc-and-mingw-tools