diff --git a/ltrace-0.5-o.patch b/ltrace-0.5-o.patch
new file mode 100644
index 0000000..dadf75d
--- /dev/null
+++ b/ltrace-0.5-o.patch
@@ -0,0 +1,59 @@
+Only in ltrace-0.5-dasho/: config.h
+Only in ltrace-0.5-dasho/: config.log
+Only in ltrace-0.5-dasho/: config.status
+Only in ltrace-0.5-dasho/: Makefile
+diff -ur ltrace-0.5/summary.c ltrace-0.5-dasho/summary.c
+--- ltrace-0.5/summary.c	2006-04-24 12:14:01.000000000 -0400
++++ ltrace-0.5-dasho/summary.c	2008-05-19 15:22:13.000000000 -0400
+@@ -68,16 +68,17 @@
+ 
+ 	qsort(entries, num_entries, sizeof(*entries), compar);
+ 
+-	printf("%% time     seconds  usecs/call     calls      function\n");
+-	printf
+-	    ("------ ----------- ----------- --------- --------------------\n");
++	fprintf(output, 
++		"%% time     seconds  usecs/call     calls      function\n");
++	fprintf(output, 
++	    "------ ----------- ----------- --------- --------------------\n");
+ 	for (i = 0; i < num_entries; i++) {
+ 		unsigned long long int c;
+ 		unsigned long long int p;
+ 		c = 1000000 * (int)entries[i].tv.tv_sec +
+ 		    (int)entries[i].tv.tv_usec;
+ 		p = 100000 * c / tot_usecs + 5;
+-		printf("%3lu.%02lu %4d.%06d %11lu %9d %s\n",
++		fprintf(output, "%3lu.%02lu %4d.%06d %11lu %9d %s\n",
+ 		       (unsigned long int)(p / 1000),
+ 		       (unsigned long int)((p / 10) % 100),
+ 		       (int)entries[i].tv.tv_sec, (int)entries[i].tv.tv_usec,
+@@ -85,8 +86,8 @@
+ 		       entries[i].count,
+ 		       opt_C ? my_demangle(entries[i].name) : entries[i].name);
+ 	}
+-	printf
+-	    ("------ ----------- ----------- --------- --------------------\n");
+-	printf("100.00 %4lu.%06lu             %9d total\n", tot_usecs / 1000000,
+-	       tot_usecs % 1000000, tot_count);
++	fprintf(output,
++	    "------ ----------- ----------- --------- --------------------\n");
++	fprintf(output, "100.00 %4lu.%06lu             %9d total\n", 
++		tot_usecs / 1000000, tot_usecs % 1000000, tot_count);
+ }
+Only in ltrace-0.5-dasho/: summary.c~
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu: arch_syscallent.h
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu: breakpoint.o
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu: os.o
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu: proc.o
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu: signalent1.h
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu: signalent.h
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu: syscallent1.h
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu: syscallent.h
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu: sysdep.h
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu: trace.o
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu/x86_64: regs.o
+Only in ltrace-0.5-dasho/sysdeps/linux-gnu/x86_64: trace.o
+Only in ltrace-0.5-dasho/testsuite/ltrace.main: Makefile
+Only in ltrace-0.5-dasho/testsuite/ltrace.minor: Makefile
+Only in ltrace-0.5-dasho/testsuite/ltrace.torture: Makefile
+Only in ltrace-0.5-dasho/testsuite: Makefile
diff --git a/ltrace.spec b/ltrace.spec
index 1d843d7..74e0d1d 100644
--- a/ltrace.spec
+++ b/ltrace.spec
@@ -1,7 +1,7 @@
 Summary: Tracks runtime library calls from dynamically linked executables
 Name: ltrace
 Version: 0.5
-Release: 10.45svn%{?dist}
+Release: 11.45svn%{?dist}
 URL: http://ltrace.alioth.debian.org/
 License: GPLv2+
 Group: Development/Debuggers
@@ -29,6 +29,7 @@ Patch11: ltrace-0.5-exec-tests.patch
 Patch12: ltrace-0.5-man.patch
 Patch13: ltrace-0.5-ia64-sigill.patch
 Patch14: ltrace-0.5-build.patch
+Patch15: ltrace-0.5-o.patch
 
 %description
 Ltrace is a debugging program which runs a specified command until the
@@ -57,12 +58,13 @@ execution of processes.
 %patch12 -p1
 %patch13 -p1
 %patch14 -p1
+%patch15 -p1
 sed -i -e 's/-o root -g root//' Makefile.in
 
 %build
 # This ugly hack is necessary to build and link files for correct
 # architecture.  It makes a difference on ppc.
-export CC="gcc`echo $RPM_OPT_FLAGS | sed -n 's/^.*\(-m[36][124]\).*$/ \1/p'`"
+export CC="gcc`echo $RPM_OPT_FLAGS | sed -n 's/^.*\(-m[36][124]\).*$/ \1/p'` -D_LARGEFILE64_SOURCE"
 %configure CC="$CC"
 make %{?_smp_mflags}
 
@@ -88,6 +90,11 @@ rm -rf $RPM_BUILD_ROOT
 %config(noreplace) %{_sysconfdir}/ltrace.conf
 
 %changelog
+* Fri May 23 2008 Petr Machata <pmachata@redhat.com> - 0.5-11.45svn
+- Patch from James M. Leddy, fixes interaction of -c and -o
+- Fix compilation by using -D_LARGEFILE64_SOURCE
+- related: #447404
+
 * Tue Feb 19 2008 Fedora Release Engineering <rel-eng@fedoraproject.org> - 0.5-10.45svn
 - Autorebuild for GCC 4.3