diff -up Linux-PAM-1.4.0/doc/Makefile.am.noflex Linux-PAM-1.4.0/doc/Makefile.am
--- Linux-PAM-1.4.0/doc/Makefile.am.noflex	2020-06-08 12:17:27.000000000 +0200
+++ Linux-PAM-1.4.0/doc/Makefile.am	2020-06-22 12:32:01.994741087 +0200
@@ -2,7 +2,7 @@
 # Copyright (c) 2005, 2006 Thorsten Kukuk <kukuk@suse.de>
 #
 
-SUBDIRS = man specs sag adg mwg
+SUBDIRS = man sag adg mwg
 
 CLEANFILES = *~
 
diff -up Linux-PAM-1.4.0/Makefile.am.noflex Linux-PAM-1.4.0/Makefile.am
--- Linux-PAM-1.4.0/Makefile.am.noflex	2020-06-22 12:32:01.994741087 +0200
+++ Linux-PAM-1.4.0/Makefile.am	2020-06-22 12:39:36.932129391 +0200
@@ -4,7 +4,7 @@
 
 AUTOMAKE_OPTIONS = 1.9 gnu dist-bzip2 dist-xz check-news
 
-SUBDIRS = libpam tests libpamc libpam_misc modules po conf examples xtests
+SUBDIRS = libpam tests libpamc libpam_misc modules po doc examples xtests
 
 if HAVE_DOC
 SUBDIRS += doc