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] Satish On Wed, 10 Apr 2013, Barry Smith wrote:

Shouldn't this be fixed by now in PETSc-dev?

Begin forwarded message:

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From: Satish Balay <[email protected]> Subject: Re: [petsc-users] cannot find 'libz.a' when configuring Date: April 10, 2013 5:21:38 PM CDT To: PETSc users list <[email protected]> Reply-To: PETSc users list <[email protected]>

try using configure option LIBS="-L/opt/zlib-1.2.7/lib -lz'

Satish

On Wed, 10 Apr 2013, Seungbum Koo wrote:

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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