[gnome-tetravex] build fix: link to lm

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

commit 7cd365de620722649cff96f854069070ef001280
Author: Thomas Hindoe Paaboel Andersen <phomes gmail com>
Date:   Wed Oct 9 23:26:50 2013 +0200

    build fix: link to lm

 src/Makefile.am |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 3086b74..aadf0bb 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -28,7 +28,8 @@ gnome_tetravex_CFLAGS = \
        -Wno-unused
 
 gnome_tetravex_LDADD = \
-       $(GNOME_TETRAVEX_LIBS)
+       $(GNOME_TETRAVEX_LIBS) \
+       -lm
 
 gnome-tetravex-resources.c: gnome-tetravex.gresource.xml $(shell $(GLIB_COMPILE_RESOURCES) 
--generate-dependencies gnome-tetravex.gresource.xml)
        $(AM_V_GEN) $(GLIB_COMPILE_RESOURCES) --target=$@ --sourcedir=$(srcdir) --generate-source 
gnome-tetravex.gresource.xml