Some time ago I changed hello.texi to not @cinlude gpl.texi any more.
May as well fix the example in the Automake manual. Diff below.
--- /tmp/ORIG/automake.texi 2010-02-25 00:22:09.000000000 -0800
+++ /tmp/automake.texi 2010-03-06 15:15:17.000000000 -0800
@@ -7743,3 +7743,3 @@
file. For instance, in GNU Hello, @file{hello.texi} includes the file
-...@file{gpl.texi}. You can tell Automake about these dependencies using
+...@file{fdl.texi}. You can tell Automake about these dependencies using
the @co...@var{texi}_texinfos} variable. Here is how GNU Hello does it:
@@ -7750,3 +7750,3 @@
info_TEXINFOS = hello.texi
-hello_TEXINFOS = gpl.texi
+hello_TEXINFOS = fdl.texi
@end example
Diff finished at Sat Mar 6 15:15:26