diff -up ./src/sugar3/Makefile.am.orig ./src/sugar3/Makefile.am
--- ./src/sugar3/Makefile.am.orig	2019-02-28 18:21:04.675864245 +0200
+++ ./src/sugar3/Makefile.am	2019-02-28 18:21:13.291864126 +0200
@@ -29,7 +29,7 @@ libsugarext_la_CFLAGS = \
 	$(WARN_CFLAGS)
 
 libsugarext_la_LDFLAGS = $(LDADD)
-libsugarext_la_LIBADD = $(EXT_LIBS)
+libsugarext_la_LIBADD = $(top_builddir)/src/sugar3/event-controller/libsugar-eventcontroller.la $(EXT_LIBS)
 
 libsugarext_la_SOURCES =		\
 	$(BUILT_SOURCES)		\