[Intel-gfx] [PATCH i-g-t] build: Add -lm to tests

[Damien Lespiau]

Since the introduction of igt_stats and its usage in gem_exec_nop, we
need to link the tests against libm. My rebasing bot complained when
linking gem_exec_nop:

  lib/igt_stats.c:492: undefined reference to `sqrt'

Signed-off-by: Damien Lespiau <damien.lespiau at intel.com>
---
 tests/Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/Makefile.am b/tests/Makefile.am
index d5fb4fd..dcac2f3 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -50,7 +50,7 @@ AM_CFLAGS = $(DRM_CFLAGS) $(CWARNFLAGS) $(DEBUG_CFLAGS)\
 
 LDADD = ../lib/libintel_tools.la $(PCIACCESS_LIBS) $(DRM_LIBS) $(LIBUNWIND_LIBS)
 
-LDADD += $(CAIRO_LIBS) $(LIBUDEV_LIBS) $(GLIB_LIBS)
+LDADD += $(CAIRO_LIBS) $(LIBUDEV_LIBS) $(GLIB_LIBS) -lm
 AM_CFLAGS += $(CAIRO_CFLAGS) $(LIBUDEV_CFLAGS) $(GLIB_CFLAGS)
 
 drm_import_export_CFLAGS = $(AM_CFLAGS) $(THREAD_CFLAGS)
-- 
2.1.0