Index: sshmitm.c
--- sshmitm.c.orig
+++ sshmitm.c
@@ -31,6 +31,9 @@
 #include "ssh.h"
 #include "version.h"
 
+/* clash with C99 csin() */
+#define csin clsin
+
 int	 Opt_debug = 0;
 int	 Opt_interact = 0;
 u_short	 Opt_dns = 0;