Hello, I am maintaining the Haskell stuff at informatik.uni-muenchen.de. (I took over the job from Sven Panne.) As a first exercise, I try to compile ghc-4.08.1 from scratch. But I always run into trouble with the libgmp stuff. IMHO, my problems are caused by several factors: 1. We use Suse Linux 7.0 (that provides libgmp-3.0.x). 2. The ghc-4.08-1 distribution includes libgmp-2.x.x. 3. libgmp-3.0.x uses prefixed names (__gnump...). Prefixed names are generated only if the header file is included. 4. The configure script does not recognize that libgmp is installed (because it does not include the header file.) 5. When linking, the linker cannot resolve symbols prefixed by mpz_ (because the 2.x.x header file was used in compilation but the linker uses the shared library provided by Suse Linux.) 5. Even if informed about the local installation of libgmp (by manually changing config.cache), the 2.x.x header file will be used (again resulting in unresolved bindings when linking). The same problems occur when bootstrapping from .hc files. What to do? Should I hack the Makefiles? Should I replace the libgmp distribution included in the ghc distribution by some new 3.x.x distribution? Thank you, Michael Marte