implemented dummy mallocBytes etc which; added cabal build system;

diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+dist/*
+*.swp
+

diff --git a/Setup.lhs b/Setup.lhs
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--- /dev/null
+++ b/Setup.lhs
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+#!/usr/bin/env runhaskell
+
+> import Distribution.Simple
+> main = defaultMain

diff --git a/hs-boehmgc.cabal b/hs-boehmgc.cabal
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+++ b/hs-boehmgc.cabal
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+Name:                hs-boehmgc
+Version:             0.1
+Synopsis:            none
+Description:         Haskell bindings for Boehm-Demers-Weiser conservative GC used in MateVM 
+License:             GPL-3
+Author:              Harald Steinlechner, Bernhard Urban
+Maintainer:          Harald Steinlechner <haraldsteinlechner@gmail.com>
+Build-Depends:       base
+cabal-version:       >= 1.2
+build-type:          Simple
+
+library
+  build-depends:       base
+  exposed-modules:     Mate.GC.Boehm
+  hs-source-dirs:      src

diff --git a/src/Mate/GC/Boehm.hs b/src/Mate/GC/Boehm.hs
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+++ b/src/Mate/GC/Boehm.hs
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+{-# LANGUAGE CPP #-}
+module Mate.GC.Boehm (
+     mallocBytesGC,
+     unsafeFreeGC,
+     getHeapSize,
+  ) where
+
+#define DEBUG
+
+import Foreign.Marshal.Alloc
+import Foreign.Ptr
+import Data.IORef
+import System.IO.Unsafe
+
+-- counts allocated memory in heap
+{-# NOINLINE globalBytesAllocated #-}
+globalBytesAllocated :: IORef Int
+globalBytesAllocated = unsafePerformIO (newIORef 0)
+
+#ifdef DEBUG
+-- |Allocates size bytes in managed memory
+mallocBytesGC :: Int -> IO (Ptr a)
+mallocBytesGC size = modifyIORef globalBytesAllocated (+ size) >> mallocBytes size
+#else
+-- |Allocates size bytes in managed memory
+mallocBytesGC :: Int -> IO (Ptr a)
+mallocBytesGC = mallocBytes
+#endif
+
+-- |Explicitely deallocate an object. Not required and dangerous.
+unsafeFreeGC :: Ptr a -> IO ()
+unsafeFreeGC _ = print "not implemented"
+
+-- |Returns currently allocated memory in bytes
+getHeapSize :: IO Int
+getHeapSize = readIORef globalBytesAllocated