diff -ur binutils-2.26.1/bfd/Makefile.in binutils-2.26.1.patched/bfd/Makefile.in
--- binutils-2.26.1/bfd/Makefile.in	2015-11-13 16:27:40.000000000 +0800
+++ binutils-2.27/bfd/Makefile.in	2016-04-02 11:05:43.398422394 +0800
@@ -341,7 +341,7 @@
 ACLOCAL_AMFLAGS = -I . -I .. -I ../config
 INCDIR = $(srcdir)/../include
 CSEARCH = -I. -I$(srcdir) -I$(INCDIR)
-SUBDIRS = doc po
+SUBDIRS = po
 bfddocdir = doc
 libbfd_la_LDFLAGS = $(am__append_1) -release `cat libtool-soversion` \
 	@SHARED_LDFLAGS@ $(am__empty)