AM_SILENT_RULES doesn't silence texinfo rules

[Jack Kelly]

Hi List,

I was hoping that AM_SILENT_RULES would silence the complex makeinfo
invocations on texinfo files, but it doesn't. I thought that might've
been OK, since the info files are usually generated before
distribution, but `make pdf' (or ps, or dvi, or html) still have
unsilenced output.

I'm using:
$ dpkg -l autoconf automake texinfo
ii  autoconf       2.64-1ubuntu1  automatic configure script builder
ii  automake       1:1.11-1       A tool for generating GNU Standards-complian
ii  texinfo        4.13a.dfsg.1-4 Documentation system for on-line information

Minimal complete example:

configure.ac:
8<---
AC_INIT([ambug], [0], [/dev/null])
AM_INIT_AUTOMAKE([foreign 1.11])
AM_SILENT_RULES([yes])
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
--->8

Makefile.am:
8<---
info_TEXINFOS = foo.texi
--->8

foo.texi:
8<---
\input texinfo @c -*- texinfo -*-
@c %**start of header
@setfilename foo.info
@settitle foo manual
@c %**end of header
@bye
--->8