Re: build from tarball uses makeinfo

[Jose E. Marchesi]

> A build of poke-0.90 uses makeinfo:
>
> $ make
> ...
> /bin/bash /media/develdata/devel/build/poke-0.90/build-aux/missing
> makeinfo --plaintext ../../doc/poke.texi \
>           > poke.text
> ...
>
> While the GCS allow this (see
> <https://www.gnu.org/prep/standards/html_node/Utilities-in-Makefiles.html>),
> it is a best practice to avoid texinfo as a build prerequisite, by packaging
> the generated files in the tarball. See
> <https://www.gnu.org/prep/standards/html_node/Makefile-Basics.html>

Yeah that was unintended.  Didn't think about it when I added the rule
to generate poke.text.

> Here is a proposed fix.
>
> It also replaces a 'clean-local' target with a more declarative
> 'MOSTLYCLEANFILES' variable. Declarative is always better than
> procedural.

OK for master.
Thanks!

>
>>From bebfa13c933f2f88f78f35abdbced9bebfab6711 Mon Sep 17 00:00:00 2001
> From: Bruno Haible <bruno@clisp.org>
> Date: Fri, 19 Feb 2021 23:54:01 +0100
> Subject: [PATCH] Make it possible to build the tarballs without makeinfo.
>
> * doc/Makefile.am (EXTRA_DIST): Add poke.text.
> (poke.text): Generate in the source directory.
> (MOSTLYCLEANFILES): New variable.
> (clean-local): Remove target.
> ---
>  doc/Makefile.am | 13 +++++++++----
>  1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/doc/Makefile.am b/doc/Makefile.am
> index 5a39f9f..cdd7f6b 100644
> --- a/doc/Makefile.am
> +++ b/doc/Makefile.am
> @@ -59,12 +59,17 @@ html-local:
>         $(builddir)/poke.html/*.html
>  
>  # Generation of the plain text manual.
> +# We distribute it in the tarballs, since it requires makeinfo to make.
>  
>  pkgdata_DATA += poke.text
> +EXTRA_DIST += poke.text
>  
>  poke.text: $(srcdir)/poke.texi
> -     $(MAKEINFO) --plaintext $(srcdir)/poke.texi \
> -          > poke.text
> +     $(MAKEINFO) --plaintext $(srcdir)/poke.texi > poke.txmp
> +     rm -f $(srcdir)/poke.text
> +     mv poke.txmp $(srcdir)/poke.text
>  
> -clean-local:
> -     rm -f pvm-insns.texi nodelist poke.text
> +MOSTLYCLEANFILES = \
> +  pvm-insns.texi \
> +  nodelist \
> +  poke.txmp poke.text