problem installing libClang with cabal on minGW

Who can help me installing libClang with cabal install? I do the following things:

1. Install haskell plattform
2. install minGW on my Windows 7 System
3. download LLVM Binaries for Mingw32/x86 and Clang Binaries for Mingw32/x86
4. then I copy it to my minGW folder

when I try to start cabal install libClang, I always get the error:

clang library not found.
if the library is present, ensure it is aviable
on the lib search path (export LDFLAGS=...)

This is the point I don't know what to do, I tried a lot of things: adding paths to PATH, LDFLAGS and LD_LIB_LIBRARY_PATH with no success.

Perhaps someone had the same problem and could tell me what to do

------- EDIT :

I now made some improvements:

1. installed haskell plattform
2. only installed MSYS like in the blog post (found in the comments http://blog.johantibell.com/2011/01/setting-up-haskell-development.html)

but now when I start cabal install libClang I get:

llvm-config not found

where should I copy my LLVM Binaries for Mingw32/x86 and Clang Binaries for Mingw32/x86 ?

------ EDIT 2 :

i put the LLVM Binaries for Mingw32/x86 and Clang Binaries for Mingw32/x86 to haskell folder and also to MSYS

now it was successfull.

when i use it now i get a error: unknown symbol _clang_toggleCrashRecovery (C:\Users\Foo\AppData\Roadming\cabal\LibClang-0.0.9\g开发者_如何转开发hc-7.0.3\HSLibClang-0.0.9.o)

what to do?