[gnutls-dev] Starting Guile integration

[Andrew W. Nosenko]

On 6/1/07, Simon Josefsson <simon at josefsson.org> wrote:
> ludo at chbouib.org (Ludovic Courtès) writes:
> >> * configure.ac contains:
> >>
> >>    AC_PATH_PROG([guile_snarf], [guile-snarf], [not-found])
> >>    if test "x$guile_snarf" = "xnot-found"; then
> >>       AC_MSG_ERROR([`guile-snarf' not found.  Please install Guile 1.8.x or later.])
> >>    fi
> >>
> >>   This seems unsafe.  Could you change this so that if guile-snarf is
> >>   not available, the guile bindings are disabled rather than aborting
> >>   the build?
> >
> > Done.
>
> It now says:
>
> if test "x$opt_guile_bindings" = "xyes"; then
>    GUILE_PROGS
>    GUILE_FLAGS
>    AC_PATH_PROG([guile_snarf], [guile-snarf])
>    if test "x$guile_snarf" = "x"; then
>       AC_MSG_WARN([`guile-snarf' from Guile 1.8 not found.  Guile bindings not built.])
>       opt_guile_bindings=no
>    else
>
> Would it work to move GUILE_PROGS + GUILE_FLAGS down into the else-case?
> This avoids some unnecessary checking if guile isn't going to be used
> anyway, due to guile-snarf missing.

[skip]

> >> Another problem:
> >>
> >> ./configure: line 7459: GUILE_PROGS: command not found
> >> ./configure: line 7460: GUILE_FLAGS: command not found
> >>
> >> The m4 files that define these macros need to be included in GnuTLS, I
> >> suggest to place them in m4/.
> >
> > That's from `guile.m4' from Guile 1.8 which should be available at
> > `/usr/share/aclocal' (or similar).  It's only needed by those who modify
> > `configure.in'.  Should we really include it?
>
> Yes -- otherwise people who don't have guile.m4 on their systems will
> get the above error when they build from CVS.  And we don't want to
> require that guile is installed in order to bootstrap gnutls.

It's not a problem if GUILE_PROGS and GUILE_FLAGS will be moved to the
else-case as proposed above.  No guile-snarf -- no guile bindings and,
therefore, no GUILE_PROGS and GUILE_FLAGS on the execution path.

-- 
Andrew W. Nosenko <andrew.w.nosenko at gmail.com>