On Tue, Apr 14, 2015 at 11:28:29PM +0200, Werner LEMBERG wrote:
>
> >> I think the best and most portable approach would be to have the
> >> autoconf infrastructure find and substitute in appropriate default
> >> values for DIFFCMD and SEDCMD via DIFFCMD=@DIFF@ and SEDCMD=@SED@,
> >> I know that is how grep(1) and egrep(1) is handled by the groff
> >> project currently.
> >>
> >> My guess is that we would need to add something to configure.ac,
> >> and maybe a makefile to make this happen.
> >
> > Werner, can you point me at something that would explain turning
> > gdiffmk.sh into something autoconf would manage?
>
> It is already managed; you only have to extend it.
>
> 1. In configure.ac (or in m4/groff.m4) a test for the `diff' program
> is needed, probably using AC_CHECK_PROGS; autoconf doesn't provide
> something in advance – note that the `configure' script itself
> already needs the `diff' program, but it doesn't provide a macro;
> it simply assumes that it is available in the path. `sed' is
> covered by AC_PROG_SED.
>
> 2. In gdiffmk.sh, use @SED@ and @DIFF@ (or whatever symbols are
> actually used in configure.ac) instead of `sed' and `diff'.
>
> 3. In the sub-makefile `contrib/gdiffmk/gdiffmk.am' you have to extend
> the `gdiffmk' rule to substitute @SED@ and @DIFF@ with its real
> values.
>
>
> Werner
I found code at the top of contrib/pdfmark/pdfroff.sh that manages
cat, grep and sed, and other portability issues, but what a tangle!
I'm inclined to commit what I have and move on, since I don't have the time
to untie that knot.
Is that acceptable?
--
Mike Bianchi
Foveal Systems
973 822-2085
[email protected]
http://www.AutoAuditorium.com
http://www.FovealMounts.com
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