[swell-foop] build fix

[Thomas Hindoe Paaboel Andersen <thomashpa src gnome org>]

commit a180e6d2d51d571938fc6308756799ad8dfb166d
Author: Thomas Hindoe Paaboel Andersen <phomes gmail com>
Date:   Wed Oct 10 13:34:13 2012 +0200

    build fix

 configure.ac |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 193b230..2eb2512 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,6 +23,8 @@ PKG_CHECK_MODULES(SWELL_FOOP, [
   clutter-gtk-1.0 >= $CLUTTER_REQUIRED
 ])
 
+AC_CHECK_LIB([m],[floor])
+
 dnl ###########################################################################
 dnl Internationalization
 dnl ###########################################################################