A clean Windows build fails. See below. help! Simon rts\Linker.c:444:7: error: error: pointer type mismatch in conditional expression [-Werror] : pinfo->owner->fileName ^ rts\Linker.c:429:7: error: error: format '%ls' expects argument of type 'wchar_t *', but argument 4 has type 'void * const' [-Werror=format=] "GHC runtime linker: fatal error: I found a duplicate definition for symbol\n" ^ cc1.exe: all warnings being treated as errors `gcc.exe' failed in phase `C Compiler'. (Exit code: 1) rts/ghc.mk:254: recipe for target 'rts/dist/build/Linker.o' failed make[1]: *** [rts/dist/build/Linker.o] Error 1 make[1]: *** Waiting for unfinished jobs.... Makefile:122: recipe for target 'all' failed make: *** [all] Error 2 /cygdrive/c/code/HEAD$