Index: Makefile.in
--- Makefile.in.orig	2024-07-24 23:49:17.029505000 +0200
+++ Makefile.in	2024-07-24 23:49:39.931865000 +0200
@@ -394,7 +394,7 @@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 ACLOCAL_AMFLAGS = -I m4
-SUBDIRS = include src doc tests extras
+SUBDIRS = include src doc
 dist_doc_DATA = LICENSE \
 		README.md