Re: About libtool supporting parallel "make install"

[Pacho Ramos]

El jue, 17-03-2011 a las 15:47 -0700, Dan Nicholson escribió:
> On Thu, Mar 17, 2011 at 3:08 AM, Pacho Ramos <address@hidden> wrote:
> > Hello
> >
> > Downstream on Gentoo we see some package having problems at "make
> > install" phase using -j2 or more. Reporting to upstream, some of them
> > told us that they think parallel *installation* is not supported:
> > https://bugs.freedesktop.org/show_bug.cgi?id=28108#c1
> 
> This is bogus. The problem is that the Makefile has src before libltdl
> in SUBDIRS. That can't possibly work since things in src need to link
> to -ltdl. Trying to build the vanilla tarball, it fails even on make
> -j1. My guess is that the developer has libltdl-devel installed and
> didn't notice it wasn't linking to the one in the tree. You may just
> not want to build an ancient canberra, though.
> 
> > https://bugzilla.gnome.org/show_bug.cgi?id=644896#c2
> 
> This seems more legitimate. I looked at the Makefile.am's and they
> look reasonable to me. You have two libraries, one is in
> lib_LTLIBRARIES and the other is in pkglib_LTLIBRARIES. The pkglib one
> depends on the lib one.
> 
> It seems that make is running install-libLTLIBRARIES and
> install-pkglibLTLIBRARIES in parallel. Each one of these these rules
> installs the libraries serially in a loop. However, if libtool is
> relinking the libraries, it really needs to wait until the
> prerequisite libraries from _other_ rules are installed. I'd bet if
> you do this:
> 
> echo "install-pkglibLTLIBRARIES: install-libLTLIBRARIES" >>
> src/backend/xml/Makefile
> 
> it will work again. This seems like a bug in automake's libtool
> support to me, but I don't know how to fix it.
> 
> > I would like then to confirm if parallel installation is supported and
> > supposed to work or we should force it to be non-parallel downstream.
> 
> I've used parallel install with libtoolized packages for years. I've
> never had bugs with it. I work on the xserver, which has tons of
> interdependent libtool libraries, and I've never seen a problem like
> this.
> 
> --
> Dan
> 

Thanks a lot for your help

We have some downstream opened bugs with similar cases, would you mind
asking for help with them here in the future once their respective
upstream refuse to fix the issues?

Best regards

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