[libgweather] linking with libm explicity

[Javier JardÃn <jjardon src gnome org>]

commit d8e7b7ba7b1c8fc9820eb8b346d2f52be8c74b2f
Author: Dominique Leuenberger <dominique-gnomezilla leuenberger net>
Date:   Thu Mar 8 18:12:03 2012 +0000

    linking with libm explicity
    
    While building with linker flags --no-copy-dt-needed-entries (default
    binutils), the linking fails, as libm is not specified.
    
    Fixes https://bugzilla.gnome.org/show_bug.cgi?id=671602

 configure.ac            |    1 +
 libgweather/Makefile.am |    2 +-
 2 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 693a0b0..09d6ae6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -42,6 +42,7 @@ LIBXML_REQUIRED=2.6.0
 
 LT_PREREQ([2.2.6])
 LT_INIT([dlopen win32-dll disable-static])
+LT_LIB_M
 
 IT_PROG_INTLTOOL([0.40.6])
 PKG_PROG_PKG_CONFIG([0.19])
diff --git a/libgweather/Makefile.am b/libgweather/Makefile.am
index 9ffc28a..111b395 100644
--- a/libgweather/Makefile.am
+++ b/libgweather/Makefile.am
@@ -72,7 +72,7 @@ test_locations_LDADD = libgweather-3.la $(GTK_LIBS)
 
 test_sun_moon_SOURCES = test_sun_moon.c
 test_sun_moon_CPPFLAGS = $(AM_CPPFLAGS) $(LIBSOUP_CFLAGS)
-test_sun_moon_LDADD = libgweather-3.la $(GTK_LIBS)
+test_sun_moon_LDADD = libgweather-3.la $(GTK_LIBS) $(LIBM)
 
 gweather-enum-types.h: $(gweather_new_headers)
 	$(AM_V_GEN)( cd $(srcdir) && $(GLIB_MKENUMS) --template gweather-enum-types.h.tmpl \