PETSc compiler

[Sumit Vaidya]

I am sorry.

I want to build it on windows. I forgot to mention that. On windows I will
not be having "configure.py" script.

Regards,
Sumit

-----Original Message-----
From: owner-petsc-users at mcs.anl.gov [mailto:owner-petsc-users at mcs.anl.gov]
On Behalf Of Satish Balay
Sent: Thursday, July 19, 2007 8:12 PM
To: petsc-users at mcs.anl.gov
Subject: Re: PETSc compiler

On Thu, 19 Jul 2007, Sumit Vaidya wrote:

> Where is the option to change the compiler?
> 
> I saw $PCC in the bmake/common/variables file. Now I want to change the
> compiler.
> 
>  
> 
> Where should I specify it?

The correct thing to do here is specify the compilers to configure.

./config/configure.py --with-cc=gcc --with-fc=g77 --download-mpich=1
--download-f-blas-lapack=1

If you need to use PETSc from different compilers [or other variation
in options] create multiple installs of PETSc with different values of
PETSC_ARCH

./config/configure.py --with-cc=gcc PETSC_ARCH=linux-gcc
make  PETSC_ARCH=linux-gcc
./config/configure.py --with-cc=icc PETSC_ARCH=linux-icc
make PETSC_ARCH=linux-icc

etc..

Satish


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