--- Makefile.am.orig	2019-11-23 15:26:28 UTC
+++ Makefile.am
@@ -5,14 +5,14 @@ ACLOCAL_AMFLAGS = -I m4 -I config
 MAINTAINERCLEANFILES += $(srcdir)/aclocal.m4 $(srcdir)/configure \
 	$(srcdir)/config.h.in
 
-DIST_SUBDIRS = 3rdparty autotests m4 config development po src sourcedoc lib
+DIST_SUBDIRS = autotests m4 config po src sourcedoc lib
 
 if BUILD_CLIENT_SUBDIR
 CLIENT = src/client
 endif
 
 
-SUBDIRS = autotests config development po 3rdparty src sourcedoc lib \
+SUBDIRS = autotests config po src sourcedoc lib \
 	$(CLIENT) src/tex2lyx src/convert