opensslをビルドしようとすると
cc1.exe: fatal error: md2test.c: No such file or directory
compilation terminated.
make[1]: *** [<builtin>: md2test.o] Error 1
make[1]: Leaving directory '/home/hoge/openssl/test'
make: *** [Makefile:296: build_tests] Error 1
と出る・・・

コマンドは以下の通り
cd /root/openssl
git checkout OpenSSL_1_0_2s
./Configure --cross-compile-prefix=x86_64-w64-mingw32- mingw64