bug#54020: Allow user-defined libtool options

[Bogdan]

Mike Frysinger <vapier@gentoo.org>, 2024-01-13 07:19:
> On 15 Mar 2023 17:31, Bogdan wrote:
> >    Another patch from my side. This one makes it possible for users to
> > pass additional options to libtool in 'compile' mode. Fixes #54020.
> >
> >    Added documentation and a test case including the '-no-suppress'
> > option. All tests with 'lt' or 'libtool' in the name pass.
> >
> >    Feel free to rename the variables, I just came up with the names
> > LTCOMPILE_PREFLAGS and LTCOMPILE_POSTFLAGS, reflecting the positions
> > where the variables are put and the mode they're used in.
>
> why do we need LTCOMPILE_POSTFLAGS ?  isn't that just after the compile
> command ?  $obj_compile expands into e.g.
>         \$(CC) @cpplike_flags \$(AM_CFLAGS) \$(CFLAGS)
>
> so if someone wants to add flags to C/etc..., they already have knobs
> to turn.
>
> which means this would simplify by only having one variable right ?
> AM_LTCOMPILE_FLAGS
> -mike


 Seems so, at least for now. At least for C compilers. At least until
$obj_compile becomes something else in the future or something more,
or even now contains (or will contain) other options after $(CFLAGS)
on the command line when using other compilers.
 For simplicity - yes, one flag like AM_LTCOMPILE_FLAGS should
suffice, at least now, as it seems. I've made pre- and post- flags for
better flexibility, to be future-proof.

--
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