Index: libcfa/src/concurrency/iocall.cfa
===================================================================
--- libcfa/src/concurrency/iocall.cfa	(revision f2384c9a61f11ea77df5daf6a5ba645578833443)
+++ libcfa/src/concurrency/iocall.cfa	(revision 133a1611de9a6da9c88c798d33b16838b0530ae5)
@@ -150,5 +150,9 @@
 	extern int fsync(int fd);
 
-	typedef __off64_t off_t;
+	#if __OFF_T_MATCHES_OFF64_T
+		typedef __off64_t off_t;
+	#else
+		typedef __off_t off_t;
+	#endif
 	typedef __off64_t off64_t;
 	extern int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags);