I JUST FOUND OUT...SILLY MEEEEE!!! ;-)
Missing --make
bugfact:
> I tried to compile the template Haskell loop unrolling trick from Claus Reinke
> on my machine which is running Windows and GHC 6.10.1, and I got linker errors.
>
> c:\temp>ghc -O2 -fvia-C -optc-O3 -fforce-recomp Apply.hs
> Apply.o:ghc6140_0.hc:(.text+0x7d): undefined reference to