[rygel] core: Link against libm for "round"

[Jens Georg <jensgeorg src gnome org>]

commit 3a113f9cfb976e4c23273edbffb063d49302de78
Author: Jens Georg <mail jensge org>
Date:   Mon Feb 3 17:52:47 2014 +0100

    core: Link against libm for "round"
    
    Signed-off-by: Jens Georg <mail jensge org>

 src/librygel-core/Makefile.am |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/librygel-core/Makefile.am b/src/librygel-core/Makefile.am
index e984488..d77e7c8 100644
--- a/src/librygel-core/Makefile.am
+++ b/src/librygel-core/Makefile.am
@@ -29,7 +29,8 @@ librygel_core_2_2_la_CFLAGS = \
        -DG_LOG_DOMAIN='"Rygel"'
 
 librygel_core_2_2_la_LIBADD = \
-       $(LIBRYGEL_CORE_DEPS_LIBS)
+       $(LIBRYGEL_CORE_DEPS_LIBS) \
+       -lm
 
 RYGEL_CORE_VERSION=2:2:0
 librygel_core_2_2_la_LDFLAGS = \