Re: 'make install' fails after 'make uninstall', with --enable-ltdl-install

[Ralf Wildenhues]

* Bob Friesenhahn wrote on Thu, Nov 12, 2009 at 09:32:37PM CET:
> On Thu, 12 Nov 2009, Ralf Wildenhues wrote:
> >* Bob Friesenhahn wrote on Thu, Nov 12, 2009 at 07:29:53PM CET:
> >>I just noticed something interesting while installing GraphicsMagick.
> >>
> >>GraphicsMagick was configured with --enable-ltdl-install so that it
> >>installed libltdl.  After doing 'make install' and 'make uninstall',
> >>a 'make install' fails with this error:
> >
> >Do I assume correctly that, at the time this build tree was configured,
> >there was a prior libltdl installation found below /usr/local?
> 
> Yes, that is a correct assumption.  While it is correct behavior, it
> may be a surprise that doing 'make uninstall' also uninstalls
> libltdl if it was installed by the build.

One implication of this is that you maybe shouldn't install libltdl
(but either use a pre-installed version, or compile a convenience one
into your application).

Another implication may be that with --enable-ltdl-install, we probably
should always pick the in-tree libltdl, i.e., the one we are going to
install, rather than a preinstalled one.  Or something like that,
haven't looked at the code at all yet.

Thanks,
Ralf