diff --git a/configure b/configure
index 97fe8f2e3..07059b8dd 100755
--- a/configure
+++ b/configure
@@ -659,6 +659,7 @@ SELINUX_PC
 SELINUX_LIBS
 REPLICATORS
 READLINE_LIBS
+RT_PC
 RAID
 PYTHON_LIBDIRS
 PYTHON_INCDIRS
@@ -12794,6 +12795,7 @@ fi
 $as_echo "#define HAVE_REALTIME 1" >>confdefs.h
 
 		LIBS="-lrt $LIBS"
+		RT_PC="librt"
 	else
 		{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Disabling realtime clock" >&5
 $as_echo "$as_me: WARNING: Disabling realtime clock" >&2;}
@@ -14141,6 +14143,7 @@ LVM_LIBAPI=`echo "$VER" | $AWK -F '[()]' '{print $2}'`
 
 
 
+
 
 
 ################################################################################
diff --git a/configure.in b/configure.in
index e273e1ddc..1825fb704 100644
--- a/configure.in
+++ b/configure.in
@@ -1570,6 +1570,7 @@ if test "$REALTIME" = yes; then
 	if test "$HAVE_REALTIME" = yes; then
 		AC_DEFINE([HAVE_REALTIME], 1, [Define to 1 to include support for realtime clock.])
 		LIBS="-lrt $LIBS"
+		RT_PC="librt"
 	else
 		AC_MSG_WARN(Disabling realtime clock)
 	fi
@@ -1984,6 +1985,7 @@ AC_SUBST(PYTHON_LIBDIRS)
 AC_SUBST(QUORUM_CFLAGS)
 AC_SUBST(QUORUM_LIBS)
 AC_SUBST(RAID)
+AC_SUBST(RT_PC)
 AC_SUBST(READLINE_LIBS)
 AC_SUBST(REPLICATORS)
 AC_SUBST(SACKPT_CFLAGS)
diff --git a/libdm/libdevmapper.pc.in b/libdm/libdevmapper.pc.in
index eb7071db2..63c07201d 100644
--- a/libdm/libdevmapper.pc.in
+++ b/libdm/libdevmapper.pc.in
@@ -8,4 +8,4 @@ Description: device-mapper library
 Version: @DM_LIB_PATCHLEVEL@
 Cflags: -I${includedir} 
 Libs: -L${libdir} -ldevmapper
-Requires.private: @SELINUX_PC@ @UDEV_PC@
+Requires.private: @SELINUX_PC@ @UDEV_PC@ @RT_PC@