synapse-0.2.8.2 fails linking with gold linker

CCLD synapse
widgets.c:4772: error: undefined reference to 'round'
widgets.c:4708: error: undefined reference to 'round'
relevancy-backend-zg.c:482: error: undefined reference to 'powf'
relevancy-backend-zg.c:482: error: undefined reference to 'powf'
relevancy-backend-zg.c:717: error: undefined reference to 'powf'
relevancy-backend-zg.c:660: error: undefined reference to 'powf'
collect2: ld returned 1 exit status
make[4]: *** [synapse] Error 1

Following patch fixes the issue

src/ui/Makefile.am | 2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/ui/Makefile.am b/src/ui/Makefile.am
index 3790ed2..78686ee 100644
--- a/src/ui/Makefile.am
+++ b/src/ui/Makefile.am
@@ -42,7 +42,7 @@ synapse_LDADD = \
   $(top_builddir)/src/core/libsynapsecore.la \
   $(top_builddir)/src/plugins/libplugins.la \
   $(top_builddir)/src/tile-view/libtileview.la \
- $(NULL)
+ $(NULL) -lm

 if HAVE_INDICATOR
 synapse_VALAFLAGS += --pkg appindicator-0.1 -D HAVE_INDICATOR