--- doc/Makefile.in.orig	2013-11-11 04:41:52 UTC
+++ doc/Makefile.in
@@ -243,7 +243,7 @@ host_vendor = @host_vendor@
 # and an extra copy or two in the install-data-hook.  
 # However, the manpages do not appear to be tremendously useful, so
 # let's not bother.
-htmldir = $(am__append_1)
+htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@