diff -Nru ctfutils-9.2/debian/changelog ctfutils-9.2/debian/changelog
--- ctfutils-9.2/debian/changelog	2014-01-08 19:57:04.000000000 +0000
+++ ctfutils-9.2/debian/changelog	2014-01-09 23:54:09.000000000 +0000
@@ -1,3 +1,10 @@
+ctfutils (9.2-5) unstable; urgency=low
+
+  * Add -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE to CFLAGS. Thanks
+    Aaron M. Ucko. (Closes: #734782)
+
+ -- Robert Millan <rmh@debian.org>  Fri, 10 Jan 2014 00:54:09 +0100
+
 ctfutils (9.2-4) unstable; urgency=low
 
   * off64_t.diff: Fix off64_t typedef conflict.
diff -Nru ctfutils-9.2/debian/patches/off64_t.diff ctfutils-9.2/debian/patches/off64_t.diff
--- ctfutils-9.2/debian/patches/off64_t.diff	2014-01-08 19:55:46.000000000 +0000
+++ ctfutils-9.2/debian/patches/off64_t.diff	1970-01-01 00:00:00.000000000 +0000
@@ -1,12 +0,0 @@
---- a/sys/cddl/compat/opensolaris/sys/types.h
-+++ b/sys/cddl/compat/opensolaris/sys/types.h
-@@ -52,7 +52,8 @@
- typedef u_long		ulong_t;
- typedef long long	longlong_t;  
- typedef unsigned long long u_longlong_t;
--typedef off_t		off64_t;
-+typedef __off64_t	off64_t;
-+#define __off64_t_defined
- typedef id_t		taskid_t;
- typedef id_t		projid_t;
- typedef id_t		poolid_t;
diff -Nru ctfutils-9.2/debian/patches/series ctfutils-9.2/debian/patches/series
--- ctfutils-9.2/debian/patches/series	2014-01-08 19:56:02.000000000 +0000
+++ ctfutils-9.2/debian/patches/series	2014-01-09 23:49:59.000000000 +0000
@@ -5,7 +5,6 @@
 
 # Other patches that might or might not be mergeable
 ulong_t.diff
-off64_t.diff
 
 # Patches that are likely to be Debian-specific
 makefile.diff
diff -Nru ctfutils-9.2/debian/rules ctfutils-9.2/debian/rules
--- ctfutils-9.2/debian/rules	2013-12-29 19:30:03.000000000 +0000
+++ ctfutils-9.2/debian/rules	2014-01-09 23:53:20.000000000 +0000
@@ -15,6 +15,12 @@
 	-Werror=implicit-function-declaration \
 	$(NULL)
 
+# Satisfy 64-bit off_t assumptions in the compat layer (see #734782)
+CFLAGS += -D_FILE_OFFSET_BITS=64
+
+# Enable fseeko / ftello prototypes, used in the compat layer
+CFLAGS += -D_LARGEFILE_SOURCE
+
 ifneq (,$(filter noopt,$(DEB_BUILD_OPTIONS)))
 	CFLAGS += -O0
 else