diff -ur cksfv-1.3.orig/src/Makefile cksfv-1.3/src/Makefile
--- cksfv-1.3.orig/src/Makefile	2001-07-06 08:33:08.000000000 +0200
+++ cksfv-1.3/src/Makefile	2004-02-04 23:22:15.000000000 +0100
@@ -17,7 +17,7 @@
 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 PROG=		cksfv
-CFLAGS+=	-Wall -Werror -O2 -g
+CFLAGS+=	-Wall -Werror -O2 -g -D_LARGEFILE64_SOURCE
 SRCS=		cksfv.c print.c crc32.c readsfv.c newsfv.c
 
 cksfv: $(SRCS)
diff -ur cksfv-1.3.orig/src/newsfv.c cksfv-1.3/src/newsfv.c
--- cksfv-1.3.orig/src/newsfv.c	2004-02-04 23:14:26.000000000 +0100
+++ cksfv-1.3/src/newsfv.c	2004-02-04 23:22:38.000000000 +0100
@@ -47,7 +47,7 @@
   
   while (*argv) {
     fn = *argv++;
-    if ((fd = open(fn, O_RDONLY, 0)) < 0) {
+    if ((fd = open(fn, O_RDONLY|O_LARGEFILE, 0)) < 0) {
       fprintf(stderr, "cksfv: %s: %s\n", fn, strerror(errno)); 
       rval = 1;
       continue;
diff -ur cksfv-1.3.orig/src/readsfv.c cksfv-1.3/src/readsfv.c
--- cksfv-1.3.orig/src/readsfv.c	2004-02-04 23:14:26.000000000 +0100
+++ cksfv-1.3/src/readsfv.c	2004-02-04 23:22:53.000000000 +0100
@@ -87,11 +87,11 @@
       snprintf(path, 256, "%s/%s", dir, filename);
 
       /* can we open the file */
-      if ((file = open(filename, O_RDONLY, 0)) < 0) {
+      if ((file = open(filename, O_RDONLY|O_LARGEFILE, 0)) < 0) {
         if (nocase == 1) {
           /* try to search for it if ingore case is set */
           find_file(filename, dir);
-          file = open(filename, O_RDONLY, 0);
+          file = open(filename, O_RDONLY|O_LARGEFILE, 0);
         }
       }