diff -u sssd-1.11.8/debian/changelog sssd-1.11.8/debian/changelog
--- sssd-1.11.8/debian/changelog
+++ sssd-1.11.8/debian/changelog
@@ -1,3 +1,11 @@
+sssd (1.11.8-0ubuntu0.5) trusty; urgency=medium
+
+  * d/p/BUILD-Fix-linking-with-librt.patch: Upstream fix for FTBS on
+    ppc64el/arm64 after the implementation of timer functions in watchdog
+    (LP: #1641875).
+
+ -- Victor Tapia <victor.tapia@canonical.com>  Fri, 24 Feb 2017 12:46:12 +0100
+
 sssd (1.11.8-0ubuntu0.4) trusty; urgency=medium
 
   * d/p/restart_providers_on_timeshift.patch: Implement watchdog and
diff -u sssd-1.11.8/debian/patches/series sssd-1.11.8/debian/patches/series
--- sssd-1.11.8/debian/patches/series
+++ sssd-1.11.8/debian/patches/series
@@ -6,0 +7 @@
+BUILD-Fix-linking-with-librt.patch
only in patch2:
unchanged:
--- sssd-1.11.8.orig/debian/patches/BUILD-Fix-linking-with-librt.patch
+++ sssd-1.11.8/debian/patches/BUILD-Fix-linking-with-librt.patch
@@ -0,0 +1,50 @@
+From dc416984d92890f31122d32240d8bc0cbf48a48e Mon Sep 17 00:00:00 2001
+From: Lukas Slebodnik <lslebodn@redhat.com>
+Date: Mon, 7 Nov 2016 11:53:21 +0100
+Subject: [PATCH] BUILD: Fix linking with librt
+
+The posix realime extensions defines timer_* functions
+but it does not mention library with these functions.
+http://www.unix.org/version2/whatsnew/realtime.html
+
+The autoconf macro AC_SEARCH_LIBS firstly check the function
+timer_create with no libraries, then for each library listed
+in 2nd parameter. Possible libraries librt and libposix4
+were used in nspr for similar detection.
+---
+ Makefile.am  |  1 +
+ configure.ac | 13 +++++++++++++
+ 2 files changed, 14 insertions(+)
+
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -623,6 +623,7 @@
+     $(AM_CFLAGS) \
+     $(SYSTEMD_LOGIN_CFLAGS)
+ libsss_util_la_LIBADD = \
++    $(LIBADD_TIMER) \
+     $(SSSD_LIBS) \
+     $(UNICODE_LIBS)
+ if BUILD_SUDO
+--- a/configure.ac
++++ b/configure.ac
+@@ -64,6 +64,19 @@
+                  pthread_mutex_consistent_np ])
+ LIBS=$SAVE_LIBS
+ 
++# Check library for the timer_create function
++SAVE_LIBS=$LIBS
++LIBS=
++LIBADD_TIMER=
++AC_SEARCH_LIBS([timer_create], [rt posix4],
++    [AC_DEFINE([HAVE_LIBRT], [1],
++         [Define if you have the librt library or equivalent.])
++     LIBADD_TIMER="$LIBS"],
++    [AC_MSG_ERROR([unable to find library fot the timer_create() function])])
++
++AC_SUBST([LIBADD_TIMER])
++LIBS=$SAVE_LIBS
++
+ # Check for presence of modern functions for setting file timestamps
+ AC_CHECK_FUNCS([ utimensat \
+                  futimens ])