[gnome-control-center] datetime: add -lm to libraries

[Cosimo Cecchi <cosimoc src gnome org>]

commit 2fa79c35ccf429356fc189afda46b0da607d0562
Author: Cosimo Cecchi <cosimo endlessm com>
Date:   Fri Sep 26 18:09:47 2014 -0700

    datetime: add -lm to libraries
    
    https://bugzilla.gnome.org/show_bug.cgi?id=764296

 panels/datetime/Makefile.am |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/panels/datetime/Makefile.am b/panels/datetime/Makefile.am
index d1d9f5b..05eaa31 100644
--- a/panels/datetime/Makefile.am
+++ b/panels/datetime/Makefile.am
@@ -26,11 +26,11 @@ AM_CPPFLAGS =                                               \
 noinst_PROGRAMS = test-timezone-gfx test-endianess test-timezone
 
 test_timezone_SOURCES = test-timezone.c cc-timezone-map.h cc-timezone-map.c tz.c tz.h 
cc-datetime-resources.c cc-datetime-resources.h
-test_timezone_LDADD = $(DATETIME_PANEL_LIBS)
+test_timezone_LDADD = $(DATETIME_PANEL_LIBS) -lm
 test_timezone_CFLAGS = $(DATETIME_PANEL_CFLAGS)
 
 test_timezone_gfx_SOURCES = test-timezone-gfx.c tz.c tz.h cc-datetime-resources.c cc-datetime-resources.h
-test_timezone_gfx_LDADD = $(DATETIME_PANEL_LIBS)
+test_timezone_gfx_LDADD = $(DATETIME_PANEL_LIBS) -lm
 test_timezone_gfx_CFLAGS = $(DATETIME_PANEL_CFLAGS)
 
 test_endianess_SOURCES = test-endianess.c date-endian.c date-endian.h