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... no, mpn_lshift_com optimization checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -mcpu=athlon... no checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -mcpu=pentiumpro... no checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -mcpu=i486... no checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -m486... no checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -march=k8... no checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -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 -march=athlon... no checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -march=pentiumpro... no checking compiler C:/msys64/home/ghc-builder/work/builder/tempbuild/build/inplace/mingw/bin/gcc.exe -O2 -pedantic -m64 -std=gnu99 -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