ghc 6.2 build problem (MinGW/MSYS)

I'm pretty new with GHC and I have prblem building ghc 6.2 with MinGW compiler in MSYS environment. After running "configure --prefix=/mingw ; make" make fails with: [snip] copying ./mpn/generic/gmp-mparam.h to gmp-mparam.h gcc -E -mno-cygwin -undef -traditional -I../includes -x c -DHAVE_LIBMINGWEX package.conf.in \ | sed 's/^#.*$//g' >package.conf.inplace gcc -E -mno-cygwin -undef -traditional -I../includes -DINSTALLING -x c -DHAVE_LIBMINGWEX package.conf.in \ | sed 's/^#.*$//g' >package.conf.installed ../utils/ghc-pkg/ghc-pkg-inplace --update-package