[Nautilus-list] Re: Best pkg-config magic for finding medusa

[Havoc Pennington <hp redhat com>]

Darin Adler <darin bentspoon com> writes:
> The Nautilus configure.in has some old-fashioned call to medusa-config to
> detect the presence of medusa (HAVE_MEDUSA) and set up MEDUSA_CFLAGS and
> MEDUSA_LIBS. I'd like to replace this with the cleanest newfangled
> pkg-config idiom. Is there a good example somewhere of a configure.in that
> correctly uses pkg-config for a conditional dependency?
> 
> I really want to fix this so that finding medusa-config doesn't make it
> think it has a suitable Gnome 2 medusa.
> 
> I don't have the heart to simply remove the medusa support, because I have
> seen action on the medusa component and I think someone might port to Gnome
> 2 at some point.
> 

PKG_CHECK_MODULES works like most check macros in that it lets you
replace the failure action. So something like:
 
   PKG_CHECK_MODULES(MEDUSA, medusa-2.0, have_medusa=yes, have_medusa=no)

   AM_CONDITIONAL (HAVE_MEDUSA, test x$have_medusa = xyes)

Havoc