diff -Nrup a/Makefile.am b/Makefile.am
--- a/Makefile.am	2019-05-25 23:15:35.000000000 +0200
+++ b/Makefile.am	2019-07-13 11:09:24.180046202 +0200
@@ -252,7 +252,7 @@ NO_UNDEFINED = -no-undefined
 MAYBE_CORE = libevent_core.la
 else
 NO_UNDEFINED =
-MAYBE_CORE =
+MAYBE_CORE = libevent_core.la
 endif
 
 AM_CFLAGS = $(LIBEVENT_CFLAGS)