--- pbmplus.h.orig	Tue Mar  1 18:46:36 1994
+++ pbmplus.h	Thu Jan  7 19:23:15 1999
@@ -20,6 +20,9 @@
 #include <perror.h>
 #include <errno.h>
 #endif
+#if (defined(__unix__) || defined(unix)) && !defined(USG)
+#include <sys/param.h>
+#endif
 
 #if defined(USG) || defined(SVR4) || defined(VMS)
 #define SYSV
@@ -30,7 +33,9 @@
 ** and if you run on an Amiga, set AMIGA. If your compiler is ANSI C, you're
 ** probably better off setting SYSV - all it affects is string handling.
 */
-#define BSD
+#ifndef BSD
+#define BSD 1
+#endif
 /* #define SYSV */
 /* #define MSDOS */
 /* #define AMIGA */
@@ -119,10 +124,12 @@
 #ifndef VMS
 #include <unistd.h>
 #endif
+#if !(defined(BSD) && (BSD >= 199306))
 extern int atoi();
 extern void exit();
 extern long time();
 extern int write();
+#endif
 #endif
 
 /* CONFIGURE: On most BSD systems, malloc() gets declared in stdlib.h, on