--- tls/tls_util.c.orig	Sun Mar 18 00:30:07 2018
+++ tls/tls_util.c	Sun Mar 18 00:31:09 2018
@@ -17,6 +17,10 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#ifdef _MSC_VER
+#define NO_REDEF_POSIX_FUNCTIONS
+#endif
+
 #include <sys/stat.h>
 
 #include <stdlib.h>