[petsc-users] Release of petsc-3.4

[Satish Balay]

I think its a reference to the following in the changes file.

>>>>>>>
The configure options --with-c-support and --with-c++-support have been removed. A PETSc library built using C or C++ can be called from either C or C++. The primary functional reason to use --with-clanguage=C++ is to use std::complex data types. Other users will likely prefer --with-clanguage=C (the default) because it compiles somewhat faster. The --with-c-support option is no longer needed because it is now the default behavior when using --with-clanguage=c++. 
<<<<<<<

And the usage of _attribute__((visibility ("default")) vs
__attribute__((visibility ("hidden")) for public vs private petsc
functions.

http://gcc.gnu.org/wiki/Visibility

Satish

On Tue, 14 May 2013, Michael Povolotskyi wrote:

> Thank you for the info.
> What is exactly "better encapsulation and better control of symbols"?
> Michael.
> 
> 
> On 05/14/2013 01:51 PM, Barry Smith wrote:
> > We are pleased to announce the release of PETSc version 3.4 at
> > http://www.mcs.anl.gov/petsc
> > 
> >    The major changes and updates can be found at
> > 
> > http://www.mcs.anl.gov/petsc/petsc/documentation/changes/34.html
> > 
> >    We recommend upgrading to PETSc 3.4 immediately. As always please report
> > problems to
> > petsc-maint at mcs.anl.gov and ask questions at petsc-users at mcs.anl.gov
> > 
> >     Notable new features include a system for managing unstructured grids
> > with PDE solvers in DMPlex.
> > Capability and performance improvements to the algebraic multigrid
> > preconditioners PCGAMG, many
> > new nonlinear solvers in SNES, many improvements to the ODE solvers in TS
> > including the new
> > TSEIMEX, and support for parallel dense linear algebra using  MatElemental.
> > The library also
> > has better encapsulation and better control of symbols.
> > 
> >     If you are using the threaded version of PETSc or PETSc on GPUs you
> > should continue to work with
> > petsc-dev since this code is too much in flux to be contained in a release.
> > 
> >     This release includes contributions from
> > 
> > Brad Aagaard
> > Shri Abhyankar
> > Mark Adams
> > Satish Balay
> > Blaise Bourdin
> > Jed Brown
> > Peter Brune
> > Emil Constantinescu
> > Lois Curfman McInnes
> > Lisandro Dalcin
> > Wenjun Deng
> > Sean Farley
> > John Fettig
> > Glenn Hammond
> > Shao-Ching Huang
> > Tobin Isaac
> > Chetan Jhurani
> > Dmitry Karpeev
> > Matthew Knepley
> > Michael Kraus
> > Patrick Lacasse
> > Rémi Lacroix
> > Michael Lange
> > Jungho Lee
> > Paul Mullowney
> > Adrián Németh
> > Jack Poulson
> > Jose Roman
> > Karl Rupp
> > Patrick Sanan
> > Barry Smith
> > Tim Tautges
> > Richard Tran Mills
> > Stefano Zampini
> > Hong Zhang (ANL/IIT)
> > Hong Zhang (Virginia Tech)
> > Xuan Zhou
> > 
> >   Thanks
> > 
> >     Barry
> > 
> 
> 
>