ghci: unknown symbol `__ashldi3

[Ch. A. Herrmann]

We have installed ghc-5.02 from source on a Solaris-2.6
machine after a difficult bootstrapping process. 
Now, ghc-5.02 works fine but with ghci we get the following
error message:

> Loading package std ... linking ... /public/packages/programming/ghc-5.02/lib/ghc-5.02/HSstd_cbits.o: unknown symbol `__ashldi3'
> ghc-5.02: panic! (the `impossible' happened, GHC version 5.02):
>         can't load package `std'


Does anyone know how to fix this problem?

Due to the presence of several Sparc classic machines we cannot
switch to Solaris-2.7 at the moment.
-- 
 Christoph Herrmann