[PATCH:libdrm] Link dristat with -lrt if appropriate.

[Cyril Brulebois]

The need for -lrt is determined at configure time, let's use the
resulting variable for dristat's link, since it uses clock_gettime().

Signed-off-by: Cyril Brulebois <kibi at debian.org>
---
 tests/Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/tests/Makefile.am b/tests/Makefile.am
index bf1987f..6f48931 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -10,6 +10,8 @@ check_PROGRAMS = \
 	dristat \
 	drmstat
 
+dristat_LDADD = $(CLOCK_LIB)
+
 SUBDIRS = modeprint
 
 if HAVE_LIBKMS
-- 
1.7.4.1