Linking error in GHC 6.4.2 snapshot of 21 April (mingw).

[Cyril Schmidt]

When I downloaded and unpacked the latest GHC snapshot of the STABLE
branch for Windows (ghc-6.4.2.20060421-i386-unknown-mingw32.tar.gz),
I got the following error trying to start GHCi:
___
   ___         ___ _
  / _ \ /\  /\/ __(_)
 / /_\// /_/ / /  | |      GHC Interactive, version 6.4.2, for Haskell 98.
/ /_\\/ __  / /___| |      http://www.haskell.org/ghc/
\____/\/ /_/\____/|_|      Type :? for help.

Loading package base-1.0 ... linking ... :
c:/ghc/GHC-64~1.2/HSbase1.o: unknown symbol `_sqrtf'
: unable to load package `base-1.0'
___

The complaint about _sqrtf also shows up when I try to
compile/link anything with ghc; so the problem is bigger
than just not being able to use GHCi.

The GHC is installed in c:\ghc\ghc-6.4.2, the PATH begins with
c:\ghc\ghc-6.4.2;c:\ghc\ghc-6.4.2\bin;c:\ghc\ghc-6.4.2\gcc-lib;
LIBRARY_PATH is set to c:\ghc\ghc-6.4.2\gcc-lib

I know for sure that the 6.4.2 snapshot of a couple of weeks ago
worked fine, so I wonder what might be wrong with the latest one.
I would appreciate any hints.

Cheers,

Cyril