Index: powersave-0.13.1/libpower/Makefile.am
===================================================================
--- powersave-0.13.1.orig/libpower/Makefile.am
+++ powersave-0.13.1/libpower/Makefile.am
@@ -27,7 +27,7 @@ libpowersave_la_SOURCES = powerlib.c  \
 			  debug.c
 libpowersave_la_DEPENDENCIES = libpowersave_hal.la
 libpowersave_la_LDFLAGS = -version-info 10:3:0 $(HAL_CFLAGS)
-libpowersave_la_LIBADD = libpowersave_hal.la $(HAL_LIBS)
+libpowersave_la_LIBADD = libpowersave_hal.la $(HAL_LIBS) -lm
 
 
 libpowersave_dbus_la_SOURCES = powersave_dbus.c \