http://bugs.gentoo.org/show_bug.cgi?id=126388
http://lists.gnu.org/archive/html/automake/2006-03/msg00037.html
automake-1.9.6 fails to ignore dnl ... include() statements and dies horribly

diff -urN dgs-0.5.10.orig/path_dps.m4 dgs-0.5.10/path_dps.m4
--- dgs-0.5.10.orig/path_dps.m4	2006-03-23 00:32:59.000000000 -0800
+++ dgs-0.5.10/path_dps.m4	2006-03-23 00:33:50.000000000 -0800
@@ -169,7 +169,7 @@
 dnl * If you use automake and  if you didn't install path_dps.m4
 dnl   [1] Create a file named acinclude.m4 at the root directory of your package.
 dnl   [2] Put follwoing codes in the acinclude.m4
-dnl       include(path_dps.m4)
+dnl       CODE CENSORED, AUTOMAKE 1.9.6 BUG
 dnl   [3] Add path_dps.m4 to EXTRA_DIST in the Makefile.am at the directory .
 dnl   [4] Invoke the follwoing commands at the directory:
 dnl       automake; aclocal -I .; autoconf