Hi, I have some issues building the RTS of GHC on windows. I tried all various versions of mingw, including the latest stable release from mingw.org, the tarballs from the darcs repo in ghc-tarballs/mingw and the version of the currently installed GHC platform with ghc 6.12 (the files in mingw/bin). The error I get is always the same, no matter if I try to build current GHC HEAD or the stable 7.0.1 release: ~~~ "inplace/bin/ghc-stage1.exe" -optc-Wall -optc-Wextra -optc-Wstrict-prototypes -optc-Wmissing-prototypes -optc-Wmissing-declarations -optc-Winline -optc-Waggregate-return -optc-Wpointer-arith -optc-Wmissing-noreturn -optc-Wnested-externs -optc-Wredundant-decls -optc-Iincludes -optc-Irts -optc-DCOMPILING_RTS -optc-fno-strict-aliasing -optc-fno-common -optc-Ilibffi/build/include -optc-fomit-frame-pointer -optc-DRtsWay=\"rts_thr\" -optc-DTHREADED_RTS -H32m -O -Iincludes -Irts -DCOMPILING_RTS -package-name rts -dcmm-lint -Ilibffi/build/include -i -irts -irts/dist/build -irts/dist/build/autogen -Irts/dist/build -Irts/dist/build/autogen -optc-O2 -c rts/Linker.c -o rts/dist/build/Linker.thr_o rts\Linker.c:1039:1: error: conflicting types for 'mktime' c:\haskell\ghc-src\inplace\mingw\bin\../lib/gcc/mingw32/4.5.0/../../../../include/time.h:104:40: note: previous declaration of 'mktime' was here rts\Linker.c:1039:1: error: conflicting types for 'localtime' c:\haskell\ghc-src\inplace\mingw\bin\../lib/gcc/mingw32/4.5.0/../../../../include/time.h:121:45: note: previous declaration of 'localtime' was here rts\Linker.c:1039:1: error: conflicting types for 'gmtime' c:\haskell\ghc-src\inplace\mingw\bin\../lib/gcc/mingw32/4.5.0/../../../../include/time.h:120:45: note: previous declaration of 'gmtime' was here make[1]: *** [rts/dist/build/Linker.thr_o] Error 1 make: *** [all] Error 2 ~~~ Can anyone confirm this error? Can anyone help me to fix this error? I definitly do not have any other versions of msys/mingw installed/in my path. Thanks, Nils