windows-x86_64-head (Windows/x86_64 HEAD (Gabor Pali)), build 15, Failure

[Builder]

windows-x86_64-head (Windows/x86_64 HEAD (Gabor Pali)), build 15

Build failed
Details: http://haskell.inf.elte.hu/builders/windows-x86_64-head/15.html

git clone                    | Success
create mk/build.mk           | Success
get subrepos                 | Success
repo versions                | Success
touching clean-check files   | Success
setting version date         | Success
booting                      | Success
configuring                  | Success
creating check-remove-before | Success
compiling                    | Failure: Just (ExitFailure 2)

Build failed
Details: http://haskell.inf.elte.hu/builders/windows-x86_64-head/15.html

-------------- next part --------------
    CC=C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe NM=C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/nm.exe AR=/usr/ghc-7.6.3/mingw/bin/ar ./configure \
          --enable-shared=no \
          --host=x86_64-unknown-mingw32 --build=x86_64-unknown-mingw32
checking build system type... x86_64-unknown-mingw32
checking host system type... x86_64-unknown-mingw32
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking ABI=64
checking whether C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe is gcc... yes
checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 ... yes
checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99  has long long... yes
checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99  -mtune=k8... yes
checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -mtune=k8  -march=k8... no, abs int -> double conversion
checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -mtune=k8  -march=k8 -mno-sse2... no
checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -mtune=k8  -march=athlon... no
checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -mtune=k8  -march=pentiumpro... no
checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -mtune=k8  -march=pentium... no
checking for x86_64-unknown-mingw32-gcc... C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe
checking whether the C compiler works... no
configure: error: in `/usr/home/ghc-builder/work/builder/tempbuild/build/libraries/integer-gmp/gmp/gmpbuild':
configure: error: C compiler cannot create executables
See `config.log' for more details.
libraries/integer-gmp/gmp/ghc.mk:135: recipe for target 'libraries/integer-gmp/gmp/gmp.h' failed
make[1]: *** [libraries/integer-gmp/gmp/gmp.h] Error 77
Makefile:71: recipe for target 'all' failed
make: *** [all] Error 2