[gnome-builder/gnome-builder-3-24] gd: ensure -lm is used when necessary

[Christian Hergert <chergert src gnome org>]

commit a69e2f513a35fefbcb2e65b7558af96c0fca2a4c
Author: Christian Hergert <chergert redhat com>
Date:   Wed Mar 22 13:05:41 2017 -0700

    gd: ensure -lm is used when necessary
    
    https://bugzilla.gnome.org/show_bug.cgi?id=780414

 contrib/gd/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/contrib/gd/Makefile.am b/contrib/gd/Makefile.am
index 15a0609..cca2ee8 100644
--- a/contrib/gd/Makefile.am
+++ b/contrib/gd/Makefile.am
@@ -22,6 +22,6 @@ glib_resources_namespace = gd
 include $(top_srcdir)/build/autotools/Makefile.am.gresources
 
 libgd_private_la_CFLAGS = $(GD_CFLAGS)
-libgd_private_la_LIBADD = $(GD_LIBS)
+libgd_private_la_LIBADD = $(GD_LIBS) $(LIBM)
 
 -include $(top_srcdir)/git.mk