[gnome-settings-daemon/gnome-3-2] color: Fix 'make check' by including -lm for powf()

[Richard Hughes <rhughes src gnome org>]

commit 153950e1a5d3ec61be5275c8286067561cfd3ffc
Author: Richard Hughes <richard hughsie com>
Date:   Mon Oct 3 17:53:49 2011 +0100

    color: Fix 'make check' by including -lm for powf()

 plugins/color/Makefile.am |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/plugins/color/Makefile.am b/plugins/color/Makefile.am
index 6d80602..fd68ac0 100644
--- a/plugins/color/Makefile.am
+++ b/plugins/color/Makefile.am
@@ -69,7 +69,8 @@ gcm_self_test_SOURCES =			\
 gcm_self_test_LDADD =			\
 	$(COLORD_LIBS)			\
 	$(LCMS_LIBS)			\
-	$(SETTINGS_PLUGIN_LIBS)
+	$(SETTINGS_PLUGIN_LIBS)		\
+	-lm
 
 TESTS = gcm-self-test