memberof.la error after make install

[steve]

1.9.4 and 1.10 alpha on openSUSE 12.3

After a successful build, the following appears upon starting sssd:
db: unable to dlopen /usr/lib/ldb/memberof.la : 
/usr/lib/ldb/memberof.la: invalid ELF header

I removed the file and all was well. Do we need it?
Cheers,
Steve

[Stephen Gallagher]

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On 04/23/2013 08:23 AM, steve wrote:
> 1.9.4 and 1.10 alpha on openSUSE 12.3
>
> After a successful build, the following appears upon starting sssd:
> db: unable to dlopen /usr/lib/ldb/memberof.la : 
> /usr/lib/ldb/memberof.la: invalid ELF header
>
> I removed the file and all was well. Do we need it? Cheers, Steve

No, the .la file is a libtool archive and is a relic of how we
generate the module. You can (and should) delete it after make install
(if you look at the contrib/sssd.spec.in file, you'll note that we
find and remove all .la files.

They are only necessary for enabling 'make uninstall' to work
properly, but if you are packaging an RPM or DEB file, this would be
handled by the packaging tools.

Also, it's worth noting that the message you see above is a noisy
warning and that the SSSD should continue to function anyway.

We should probably update
https://fedorahosted.org/sssd/wiki/DevelTutorials to recommend
removing the libtool archives, though.
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[Jakub Hrozek]

On Tue, Apr 23, 2013 at 08:33:42AM -0400, Stephen Gallagher wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 04/23/2013 08:23 AM, steve wrote:
> > 1.9.4 and 1.10 alpha on openSUSE 12.3
> >
> > After a successful build, the following appears upon starting sssd:
> > db: unable to dlopen /usr/lib/ldb/memberof.la : 
> > /usr/lib/ldb/memberof.la: invalid ELF header
> >
> > I removed the file and all was well. Do we need it? Cheers, Steve
>
> No, the .la file is a libtool archive and is a relic of how we
> generate the module. You can (and should) delete it after make install
> (if you look at the contrib/sssd.spec.in file, you'll note that we
> find and remove all .la files.
>
> They are only necessary for enabling 'make uninstall' to work
> properly, but if you are packaging an RPM or DEB file, this would be
> handled by the packaging tools.
>
> Also, it's worth noting that the message you see above is a noisy
> warning and that the SSSD should continue to function anyway.
>
> We should probably update
> https://fedorahosted.org/sssd/wiki/DevelTutorials to recommend
> removing the libtool archives, though.

I used your explanation to amend the DevelTips page:
https://fedorahosted.org/sssd/wiki/DevelTips?action=diff&version=7&o...

[Jakub Hrozek]

On Tue, Apr 23, 2013 at 02:23:43PM +0200, steve wrote:
> 1.9.4 and 1.10 alpha on openSUSE 12.3
>
> After a successful build, the following appears upon starting sssd:
> db: unable to dlopen /usr/lib/ldb/memberof.la :
> /usr/lib/ldb/memberof.la: invalid ELF header
>
> I removed the file and all was well. Do we need it?
> Cheers,
> Steve

It's safe to ignore the warning and/or remove the file. .la stands for
"libtool archive". Some more details can be found here:
https://www.gnu.org/software/libtool/manual/html_node/Linking-libraries.html

We actually remove the .la file when creating RPMs.