diff -urN mpeg_encode.old//headers/libpnmrw.h mpeg_encode//headers/libpnmrw.h
--- mpeg_encode.old//headers/libpnmrw.h	1995-08-09 16:17:41.000000000 +0100
+++ mpeg_encode//headers/libpnmrw.h	2009-02-10 17:06:09.508519503 +0000
@@ -13,18 +13,7 @@
 #ifndef _PNMRW_H_
 #define _PNMRW_H_
 
-/* CONFIGURE: On some systems, malloc.h doesn't declare these, so we have
-** to do it.  On other systems, for example HP/UX, it declares them
-** incompatibly.  And some systems, for example Dynix, don't have a
-** malloc.h at all.  A sad situation.  If you have compilation problems
-** that point here, feel free to tweak or remove these declarations.
-*/
 #include <malloc.h>
-#if !defined(sco)  &&  !defined(sgi) && !defined(IRIX)
-extern char* malloc();
-#endif
-/* End of configurable definitions. */
-
 
 /* Definitions to make PBMPLUS work with either ANSI C or C Classic. */
 
diff -urN mpeg_encode.old//jpeg/Makefile mpeg_encode//jpeg/Makefile
--- mpeg_encode.old//jpeg/Makefile	1995-08-05 00:27:00.000000000 +0100
+++ mpeg_encode//jpeg/Makefile	2009-02-10 17:27:20.488862124 +0000
@@ -20,9 +20,6 @@
 manprefix =
 manext = 1
 
-# The name of your C compiler:
-CC= gcc
-
 # You may need to adjust these cc options:
 CFLAGS= -O -I$(srcdir)
 # Generally, we recommend defining any configuration symbols in jconfig.h,
@@ -49,10 +46,8 @@
 RM= rm -f
 # file rename command
 MV= mv
-# library (.a) file creation command
-AR= ar rc
 # second step in .a creation (use "touch" if not needed)
-AR2= ranlib
+AR2= $(RANLIB)
 # installation program
 INSTALL= /bin/install -c
 INSTALL_PROGRAM= $(INSTALL)
@@ -121,7 +116,7 @@
 
 libjpeg.a:  $(LIBOBJECTS)
 	$(RM) libjpeg.a
-	$(AR) libjpeg.a  $(LIBOBJECTS)
+	$(AR) rc libjpeg.a  $(LIBOBJECTS)
 	$(AR2) libjpeg.a
 
 cjpeg: $(COBJECTS) libjpeg.a
diff -urN mpeg_encode.old//libpnmrw.c mpeg_encode//libpnmrw.c
--- mpeg_encode.old//libpnmrw.c	1995-08-16 23:24:26.000000000 +0100
+++ mpeg_encode//libpnmrw.c	2009-02-10 17:58:49.768855068 +0000
@@ -28,6 +28,7 @@
 #endif
 
 #include <stdio.h>
+#include <errno.h>
 #include "libpnmrw.h"
 
 /* if don't have string.h, try strings.h */
@@ -126,8 +127,6 @@
   pm_perror( reason )
 char* reason;
 {
-  extern char* sys_errlist[];
-  extern int errno;
   char* e;
 
   e = sys_errlist[errno];