[petsc-dev] Fwd: [petsc-users] cannot find 'libz.a' when configuring

[Matthew Knepley]

On Wed, Apr 10, 2013 at 7:53 PM, Satish Balay <balay at mcs.anl.gov> wrote:

> How do we handle these packages with complicated dependencies [they
> are complicated as petsc dependencies?]
>
> In this report hdf5 was built with szip-2.1 and zlib-1.2.7. So how
> does petsc configure automatically detect this?
>
> And I've recently used the following for hdf5/necddf5 on fusion [with
> the extra implicit depenceny of hdf5 on zlib, and netcdf5 on hdf5 from
> within configure]
>
>     '--with-hdf5-lib=-L/soft/hdf5/1.8.6-parallel/lib -lhdf5_hl -lhdf5
> -lgpfs',
>
>     '--with-netcdf-lib=-L/soft/netcdf/4.1.1-parallel/lib -lnetcdff
> -lnetcdf -L/usr/kerberos/lib64 -lcurl -ldl -lgssapi_krb5 -lkrb5 -lk5crypto
> -lcom_err -lidn -lssl -lcrypto -lz',
>
> Yeah - things work if the user knows the dependencies and the link
> command for those dependencies - and specify it to petsc configure as
> above. But I'm not sure how to autodetect this.
>
> Also currently -lz is handled in package.py with
> 'self.needsCompression' similar to 'self.needsMath' with the detection
> of -lz in libraires.py:checkCompression() - but one can't specify a
> --with-zlib-lib option this way. I guess this part can be fixed by
> migrating it a standalone package z.py. [And somehow handle the
> optional part of this dependency for hdf5]


We already have a mechanism for this. Lots of packages depend on other
packages. This is
just screwed up in the case of libz because someone (maybe me) did not want
to write an
entire package file for it, and instead copped out with the
needsCompression.

    Matt


>
> Satish
>
> On Wed, 10 Apr 2013, Barry Smith wrote:
>
> >
> >   Shouldn't this be fixed by now in PETSc-dev?
> >
> >
> >
> > Begin forwarded message:
> >
> > > From: Satish Balay <balay at mcs.anl.gov>
> > > Subject: Re: [petsc-users] cannot find 'libz.a' when configuring
> > > Date: April 10, 2013 5:21:38 PM CDT
> > > To: PETSc users list <petsc-users at mcs.anl.gov>
> > > Reply-To: PETSc users list <petsc-users at mcs.anl.gov>
> > >
> > > try using configure option LIBS="-L/opt/zlib-1.2.7/lib -lz'
> > >
> > > Satish
> > >
> > > On Wed, 10 Apr 2013, Seungbum Koo wrote:
> > >
> > >> Hi. I tried to add hdf5 when configuring. HDF5-1.8.9 is currently
> installed
> > >> with szip-2.1 and zlib-1.2.7.
> > >>
> > >> It stops with message
> > >>
> > >>
> *******************************************************************************
> > >>         UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.log
> for
> > >> details):
> > >>
> -------------------------------------------------------------------------------
> > >> Compression library [libz.a or equivalent] not found
> > >>
> *******************************************************************************
> > >>
> > >> What I don't understand is that 'libz.a' file exists in
> > >> '/opt/zlib-1.2.7/lib'. What should I do?
> > >>
> > >> Seungbum
> > >>
> > >
> >
> >
>
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20130411/c3976651/attachment.html>