diff -urN work.orig/convert/eyuvtojpeg.c work/convert/eyuvtojpeg.c
--- work.orig/convert/eyuvtojpeg.c	1995-04-14 23:16:52.000000000 +0200
+++ work/convert/eyuvtojpeg.c	2004-01-21 21:19:20.463187922 +0100
@@ -22,6 +22,7 @@
 /*==============*
  * HEADER FILES *
  *==============*/
+#include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <malloc.h>
@@ -43,7 +44,7 @@
 void AllocYCC(void);
 
 
-void	main(int argc, char **argv)
+int	main(int argc, char **argv)
 {
     FILE *fpointer;
     char command[256];
@@ -105,6 +106,7 @@
     fprintf(stdout, "Converting to JPEG %s\n", dest);
     sprintf(command, "cjpeg /tmp/foobar > %s", dest);
     system(command);
+    return 0;
 }
 
 
diff -urN work.orig/convert/eyuvtoppm.c work/convert/eyuvtoppm.c
--- work.orig/convert/eyuvtoppm.c	1995-04-14 23:16:52.000000000 +0200
+++ work/convert/eyuvtoppm.c	2004-01-21 21:19:20.463187922 +0100
@@ -22,6 +22,7 @@
 /*==============*
  * HEADER FILES *
  *==============*/
+#include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <malloc.h>
@@ -43,7 +44,7 @@
 void AllocYCC(void);
 
 
-void	main(int argc, char **argv)
+int	main(int argc, char **argv)
 {
     FILE *fpointer;
     char src[256], dest[256];
@@ -109,7 +110,7 @@
 
     WritePPM(fpointer);
     fclose(fpointer);
-
+    return 0;
 }
 
 void Usage(void)
diff -urN work.orig/convert/mtv/archdep.h work/convert/mtv/archdep.h
--- work.orig/convert/mtv/archdep.h	1995-01-24 23:42:33.000000000 +0100
+++ work/convert/mtv/archdep.h	2004-01-21 21:19:20.464187759 +0100
@@ -45,16 +45,46 @@
 			    ((char *)(to))[5] = ((char *)(from))[2];	\
 			    ((char *)(to))[6] = ((char *)(from))[1];	\
 			    ((char *)(to))[7] = ((char *)(from))[0];
-#endif /*little-endian*/
+#endif /*little-endian 32bit*/
+
+#if defined (__x86_64)
+#define	DECODE_SHORT(from, to)						\
+			    ((char *)(to))[0] = ((char *)(from))[1];	\
+			    ((char *)(to))[1] = ((char *)(from))[0];
+#define	DECODE_INT(from, to)						\
+			    ((char *)(to))[0] = ((char *)(from))[3];	\
+			    ((char *)(to))[1] = ((char *)(from))[2];	\
+			    ((char *)(to))[2] = ((char *)(from))[1];	\
+			    ((char *)(to))[3] = ((char *)(from))[0];
+
+#define	DECODE_LONG(from, to)						\
+			    ((char *)(to))[0] = ((char *)(from))[7];	\
+			    ((char *)(to))[1] = ((char *)(from))[6];	\
+			    ((char *)(to))[2] = ((char *)(from))[5];	\
+			    ((char *)(to))[3] = ((char *)(from))[4];    \
+			    ((char *)(to))[4] = ((char *)(from))[3];	\
+			    ((char *)(to))[5] = ((char *)(from))[2];	\
+			    ((char *)(to))[6] = ((char *)(from))[1];	\
+			    ((char *)(to))[7] = ((char *)(from))[0];
+
+#define	DECODE_FLOAT(from, to)		DECODE_INT((to), (from))
+
+#define	DECODE_DOUBLE(from, to)		DECODE_LONG((to), (from))
+
+#endif /*little-endian, 64bit*/
 
 
 /* Most architectures are symmetrical with respect to conversions. */
-#if defined (mc68000) || defined (sparc) || defined (i386)
+#if defined (mc68000) || defined (sparc) || defined (i386) || defined(__x86_64)
 #define	ENCODE_SHORT(from, to)		DECODE_SHORT((from), (to))
 #define	ENCODE_LONG(from, to)		DECODE_LONG((from), (to))
 #define	ENCODE_FLOAT(from, to)		DECODE_FLOAT((from), (to))
 #define	ENCODE_DOUBLE(from, to)		DECODE_DOUBLE((from), (to))
 
+#if defined(__x86_64)
+#define	ENCODE_INT(from, to)		DECODE_INT((from), (to))
+#endif
+
 /* Define types of specific length */
 typedef char		i_8;
 typedef short		i_16;
diff -urN work.orig/convert/mtv/movieToVid.c work/convert/mtv/movieToVid.c
--- work.orig/convert/mtv/movieToVid.c	1995-01-24 23:42:33.000000000 +0100
+++ work/convert/mtv/movieToVid.c	2004-01-21 21:19:20.465187595 +0100
@@ -295,7 +295,7 @@
     exit (0);
 }
 
-void
+int
 main (argc, argv)
 int argc;
 char **argv;
@@ -326,4 +326,5 @@
     WriteScriptFile (argv[1], argv[2], argv[3], argv[4],
 		     &header, offsets, numFrames);
     fprintf (stderr, "done\n");
+    return 0;
 }
diff -urN work.orig/convert/ppmtoeyuv.c work/convert/ppmtoeyuv.c
--- work.orig/convert/ppmtoeyuv.c	1995-01-20 04:25:37.000000000 +0100
+++ work/convert/ppmtoeyuv.c	2004-01-21 21:19:20.462188086 +0100
@@ -39,6 +39,7 @@
  * HEADER FILES *
  *==============*/
 
+#include <malloc.h> 
 #include <stdio.h>
 #include "ansi.h"
 
@@ -65,7 +66,7 @@
 static void PPMtoYUV _ANSI_ARGS_((void));
 
 
-void	main(int argc, char **argv)
+int	main(int argc, char **argv)
 {
     if ( ! ReadPPM(stdin) )
     {
@@ -76,6 +77,7 @@
     PPMtoYUV();
 
     WriteYUV(stdout);
+    return 0;
 }
 
 
diff -urN work.orig/mpeg_encode/bitio.c work/mpeg_encode/bitio.c
--- work.orig/mpeg_encode/bitio.c	1995-06-21 20:36:12.000000000 +0200
+++ work/mpeg_encode/bitio.c	2004-01-21 21:19:20.458188741 +0100
@@ -79,6 +79,8 @@
  * HEADER FILES *
  *==============*/
 
+#include <unistd.h>
+#include <time.h>
 #include <assert.h>
 #include "all.h"
 #include "byteorder.h"
diff -urN work.orig/mpeg_encode/jpeg.c work/mpeg_encode/jpeg.c
--- work.orig/mpeg_encode/jpeg.c	1995-08-05 01:35:07.000000000 +0200
+++ work/mpeg_encode/jpeg.c	2004-01-21 21:19:20.461188250 +0100
@@ -65,6 +65,8 @@
  *==============*/
 
 #include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
 #include "all.h"
 #include "mtypes.h"
 #include "frames.h"
diff -urN work.orig/mpeg_encode/libpnmrw.c work/mpeg_encode/libpnmrw.c
--- work.orig/mpeg_encode/libpnmrw.c	2004-01-21 19:41:38.000000000 +0100
+++ work/mpeg_encode/libpnmrw.c	2004-01-21 21:19:20.460188414 +0100
@@ -27,6 +27,7 @@
 /* #define MSDOS */
 #endif
 
+#include <stdlib.h>
 #include <stdio.h>
 #include "libpnmrw.h"
 
diff -urN work.orig/mpeg_encode/opts.c work/mpeg_encode/opts.c
--- work.orig/mpeg_encode/opts.c	1995-08-15 20:34:09.000000000 +0200
+++ work/mpeg_encode/opts.c	2004-01-21 21:19:20.459188578 +0100
@@ -35,6 +35,7 @@
  * HEADER FILES *
  *==============*/
 
+#include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include "opts.h"