--- Makefile.in.orig	2015-07-23 10:46:25.620611000 +0900
+++ Makefile.in	2015-07-23 10:46:40.645948000 +0900
@@ -487,7 +487,7 @@
 NEVER_NAMES_LT = -o -name .libs -o -name '*.lo'
 
 # Files not to be distributed
-SUBDIRS = . doc $(MAKE_SUBDIRS) libs utils texk
+SUBDIRS = . doc $(MAKE_SUBDIRS) utils texk
 DIST_SUBDIRS = auxdir/auxsub doc $(CONF_SUBDIRS) libs utils texk
 recurse_this = 
 recurse_top =