Let bin86 to be compiled in x86_64 systems
--- bin86-0.16.21-orig/ld/x86_aout.h	2013-10-29 16:44:51.000000000 +0100
+++ bin86-0.16.21/ld/x86_aout.h	2017-01-14 10:21:25.432119620 +0100
@@ -12,15 +12,13 @@
 #if defined(i386) || defined(__BCC__) || defined(MSDOS)
 typedef long Long;
 #define __OUT_OK 1
-#else
+#elif defined(__x86_64__)
 /* Beware: this will probably allow some BE hosts to generate broken files. */
-#ifdef INT32_MAX
 #include <stdint.h>
-typedef int32_t Long;
+typedef int Long;
 #define __OUT_OK 1
 #else
-typedef char Long[4];
-#endif
+#define char Long[4];
 #endif
 
 struct	exec {			/* a.out header */