# undef OPENSSL_SYS_UNIX
# define OPENSSL_SYS_WIN32
# endif
+# if defined(_WIN64) || defined(OPENSSL_SYSNAME_WIN64)
+# undef OPENSSL_SYS_UNIX
+# if !defined(OPENSSL_SYS_WIN64)
+# define OPENSSL_SYS_WIN64
+# endif
+# endif
# if defined(OPENSSL_SYSNAME_WINNT)
# undef OPENSSL_SYS_UNIX
# define OPENSSL_SYS_WINNT
# endif
/* Anything that tries to look like Microsoft is "Windows" */
-# if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WINNT) || defined(OPENSSL_SYS_WINCE)
+# if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN64) || defined(OPENSSL_SYS_WINNT) || defined(OPENSSL_SYS_WINCE)
# undef OPENSSL_SYS_UNIX
# define OPENSSL_SYS_WINDOWS
# ifndef OPENSSL_SYS_MSDOS