Re: [PATCH] support parallel installations

[Gary V. Vaughan]

Hi Ralf,

Ralf Wildenhues wrote:
> Sorry for late response..

That's okay.  All feedback is good.  :-)

> >         * configure.ac (APIVERSION): New substituted variable.
> >         (pkgvdatadir): Ditto.  Versioned data directory.
> >         (pkgvmacrodir): Ditto.  Versioned aclocal directory.
> >         (LN): New check for LN command.
> >         * Makefile.am (aclocal_DATA): Replaced with...
> >         (pkgvmacro_DATA): ...this.
> >         (install-data-local): Remove old shared resources.
> >         (install-exec-hook): Make versioned links to executables.
> >         (uninstall-hook): Remove versioned files.
> >         * libltdl/Makefile.am (ltdldatadir): Redefine in terms of
> >         pkgvdatadir.
> >         * libltdl/loaders/Makefile.am (ltdldatadir): Ditto.
> >         * libtoolize.m4sh: Copy macro files from versioned macro directory
> >         instead of shared aclocal directory.
> >         * doc/libtool.texi: Document it.
> >         * NEWS: Updated.

[[...]]

> > +* In order for this to work, Libtool's aclocal macros are not installed
> > +  to a shared aclocal dir.  Either change your Makefile.am to use:
> > +     ACLOCAL_AMFLAGS = -I /usr/share/libtool-1.9g/m4
> > +  Or change your configure.ac to use:
> > +     AC_CONFIG_MACRO_DIR([m4])
>
>
> People might not want to start using a m4 directory now.  Can they use
>   AC_CONFIG_MACRO_DIR([.])
> as well?

Yes that is fine.  But it will drop all libtool m4 files in $top_srcdir.

> Furthermore, I think only recent aclocal's read configure.ac
> AC_CONFIG_MACRO_DIR (or there was some associated issue with that).

That's why I offered the ACLOCAL_AMFLAGS option too.  That just copies
the macro files into aclocal.m4.

> Since Libtool (at least until yet-to-be version 2.0) wants to support
> Automake back to 1.4(?), this change should be tested with older
> versions.

Good point.  I'll do that.

> Furthermore, people might just not want to change their package merely
> for using libtool.  There should be an easy way to get the default
> installed libtool.  I'm not sure yet how to accomplish this.

Well, if they want to use libtool-2.0, then they already have to change
their configure.ac to use LT_INIT et. al, and I think it better to put
the parallel install stuff in now so that they only have to change once.

> Regards,
> Ralf

Thanks for the feedback!

Cheers,
        Gary.
--
Gary V. Vaughan      ())_.  address@hidden,gnu.org}
Research Scientist   ( '/   http://tkd.kicks-ass.net
GNU Hacker           / )=   http://www.gnu.org/software/libtool
Technical Author   `(_~)_   http://sources.redhat.com/autobook

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