drm: Add -lm to libdrm ldflags to fix build failure.

Last commit (b556ea127e004b734b2a7bf8e67cdcf56312171d) introduced
use of log2 which require -lm flag for the linker on quite few
distribution. Just add that flag to fix build.

Signed-off-by: Jérôme Glisse <jglisse@redhat.com>

diff --git a/Makefile.am b/Makefile.am
index 55e39a5..cc8d88a 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -100,7 +100,7 @@ SUBDIRS = \
 
 libdrm_la_LTLIBRARIES = libdrm.la
 libdrm_ladir = $(libdir)
-libdrm_la_LDFLAGS = -version-number 2:4:0 -no-undefined
+libdrm_la_LDFLAGS = -version-number 2:4:0 -no-undefined -lm
 libdrm_la_LIBADD = @CLOCK_LIB@
 
 libdrm_la_CPPFLAGS = -I$(top_srcdir)/include/drm