diff -up avahi-0.8/avahi-qt/Makefile.am.no_undefined avahi-0.8/avahi-qt/Makefile.am
--- avahi-0.8/avahi-qt/Makefile.am.no_undefined	2018-09-14 00:31:28.490023071 -0500
+++ avahi-0.8/avahi-qt/Makefile.am	2020-11-17 16:35:04.646045499 -0600
@@ -38,9 +38,9 @@ libavahi_qt3_la_SOURCES = \
 qt-watch.moc3: qt-watch.cpp
 	$(AM_V_GEN)$(MOC_QT3) $^ > $@
 
-libavahi_qt3_la_CPPFLAGS = $(AM_CFLAGS) $(QT3_CFLAGS) -DQT3 $(VISIBILITY_HIDDEN_CFLAGS)
+libavahi_qt3_la_CPPFLAGS = $(AM_CFLAGS) $(QT3_CFLAGS) -DQT3 $(VISIBILITY_HIDDEN_CFLAGS)
 libavahi_qt3_la_LIBADD = $(AM_LDADD) ../avahi-common/libavahi-common.la $(QT3_LIBS)
-libavahi_qt3_la_LDFLAGS = $(AM_LDFLAGS) -export-dynamic -version-info $(LIBAVAHI_QT3_VERSION_INFO)
+libavahi_qt3_la_LDFLAGS = $(AM_LDFLAGS) -Wl,--no-undefined -no-undefined -export-dynamic -version-info $(LIBAVAHI_QT3_VERSION_INFO)
 endif
 
 if HAVE_QT4
@@ -62,7 +62,7 @@ qt-watch.moc4: qt-watch.cpp
 
 libavahi_qt4_la_CPPFLAGS = $(AM_CFLAGS) $(QT4_CFLAGS) -DQT4 $(VISIBILITY_HIDDEN_CFLAGS)
 libavahi_qt4_la_LIBADD = $(AM_LDADD) ../avahi-common/libavahi-common.la $(QT4_LIBS)
-libavahi_qt4_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(LIBAVAHI_QT4_VERSION_INFO)
+libavahi_qt4_la_LDFLAGS = $(AM_LDFLAGS) -Wl,--no-undefined -no-undefined -version-info $(LIBAVAHI_QT4_VERSION_INFO)
 endif
 
 if HAVE_QT5
@@ -84,7 +84,7 @@ qt-watch.moc5: qt-watch.cpp
 
 libavahi_qt5_la_CPPFLAGS = $(AM_CFLAGS) --std=gnu++11 $(QT5_CFLAGS) -DQT5 $(VISIBILITY_HIDDEN_CFLAGS)
 libavahi_qt5_la_LIBADD = $(AM_LDADD) ../avahi-common/libavahi-common.la $(QT5_LIBS)
-libavahi_qt5_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(LIBAVAHI_QT5_VERSION_INFO)
+libavahi_qt5_la_LDFLAGS = $(AM_LDFLAGS) -Wl,--no-undefined -no-undefined  -version-info $(LIBAVAHI_QT5_VERSION_INFO)
 endif
 
 CLEANFILES = $(BUILT_SOURCES)
diff -up avahi-0.8/avahi-qt/Makefile.in.no_undefined avahi-0.8/avahi-qt/Makefile.in
--- avahi-0.8/avahi-qt/Makefile.in.no_undefined	2020-02-18 01:03:16.474614659 -0600
+++ avahi-0.8/avahi-qt/Makefile.in	2020-11-17 16:36:12.263297534 -0600
@@ -551,9 +551,9 @@ BUILT_SOURCES = $(am__append_2) $(am__ap
 @HAVE_QT3_TRUE@libavahi_qt3_la_SOURCES = \
 @HAVE_QT3_TRUE@	qt-watch.cpp
 
-@HAVE_QT3_TRUE@libavahi_qt3_la_CPPFLAGS = $(AM_CFLAGS) $(QT3_CFLAGS) $(VISIBILITY_HIDDEN_CFLAGS)
+@HAVE_QT3_TRUE@libavahi_qt3_la_CPPFLAGS = $(AM_CFLAGS) $(QT3_CFLAGS) -DQT3 $(VISIBILITY_HIDDEN_CFLAGS)
 @HAVE_QT3_TRUE@libavahi_qt3_la_LIBADD = $(AM_LDADD) ../avahi-common/libavahi-common.la $(QT3_LIBS)
-@HAVE_QT3_TRUE@libavahi_qt3_la_LDFLAGS = $(AM_LDFLAGS) -export-dynamic -version-info $(LIBAVAHI_QT3_VERSION_INFO)
+@HAVE_QT3_TRUE@libavahi_qt3_la_LDFLAGS = $(AM_LDFLAGS) -Wl,--no-undefined -no-undefined -export-dynamic -version-info $(LIBAVAHI_QT3_VERSION_INFO)
 @HAVE_QT4_TRUE@avahiqt4includedir = $(includedir)/avahi-qt4
 @HAVE_QT4_TRUE@avahiqt4include_HEADERS = \
 @HAVE_QT4_TRUE@	qt-watch.h
@@ -563,7 +563,7 @@ BUILT_SOURCES = $(am__append_2) $(am__ap
 
 @HAVE_QT4_TRUE@libavahi_qt4_la_CPPFLAGS = $(AM_CFLAGS) $(QT4_CFLAGS) -DQT4 $(VISIBILITY_HIDDEN_CFLAGS)
 @HAVE_QT4_TRUE@libavahi_qt4_la_LIBADD = $(AM_LDADD) ../avahi-common/libavahi-common.la $(QT4_LIBS)
-@HAVE_QT4_TRUE@libavahi_qt4_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(LIBAVAHI_QT4_VERSION_INFO)
+@HAVE_QT4_TRUE@libavahi_qt4_la_LDFLAGS = $(AM_LDFLAGS) -Wl,--no-undefined -no-undefined -version-info $(LIBAVAHI_QT4_VERSION_INFO)
 @HAVE_QT5_TRUE@avahiqt5includedir = $(includedir)/avahi-qt5
 @HAVE_QT5_TRUE@avahiqt5include_HEADERS = \
 @HAVE_QT5_TRUE@	qt-watch.h
@@ -573,7 +573,7 @@ BUILT_SOURCES = $(am__append_2) $(am__ap
 
 @HAVE_QT5_TRUE@libavahi_qt5_la_CPPFLAGS = $(AM_CFLAGS) --std=gnu++11 $(QT5_CFLAGS) -DQT5 $(VISIBILITY_HIDDEN_CFLAGS)
 @HAVE_QT5_TRUE@libavahi_qt5_la_LIBADD = $(AM_LDADD) ../avahi-common/libavahi-common.la $(QT5_LIBS)
-@HAVE_QT5_TRUE@libavahi_qt5_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(LIBAVAHI_QT5_VERSION_INFO)
+@HAVE_QT5_TRUE@libavahi_qt5_la_LDFLAGS = $(AM_LDFLAGS) -Wl,--no-undefined -no-undefined -version-info $(LIBAVAHI_QT5_VERSION_INFO)
 CLEANFILES = $(BUILT_SOURCES)
 all: $(BUILT_SOURCES)
 	$(MAKE) $(AM_MAKEFLAGS) all-am