--- a/src/unexalpha.c	Mon Aug 13 11:19:22 2007 +0200
+++ b/src/unexalpha.c	Mon Aug 13 11:20:41 2007 +0200
@@ -31,7 +31,6 @@
 #include <sys/stat.h>
 #include <sys/mman.h>
 #include <stdio.h>
-#include <errno.h>
 #include <varargs.h>
 #include <filehdr.h>
 #include <aouthdr.h>
@@ -55,6 +54,11 @@
 	if (lseek (_fd, _position, L_SET) != _position) \
 	  fatal_unexec (_error_message, _error_arg);
 
+extern int errno;
+extern char *strerror ();
+
+void *sbrk();
+
 #define EEOF -1
 
 static struct scnhdr *text_section;
@@ -81,13 +85,12 @@
 };
 
 
+
 /* Define name of label for entry point for the dumped executable.  */
 
 #ifndef DEFAULT_ENTRY_ADDRESS
 #define DEFAULT_ENTRY_ADDRESS __start
 #endif
-EXTERN_C int DEFAULT_ENTRY_ADDRESS (void);
-
 
 int
 unexec (char *new_name, char *a_name,
@@ -207,6 +210,7 @@
   nhdr.aout.bsize = 0;
   if (entry_address == 0)
     {
+      extern int DEFAULT_ENTRY_ADDRESS (void);
       nhdr.aout.entry = (unsigned long)DEFAULT_ENTRY_ADDRESS;
     }
   else