[petsc-users] Changing the options in the makefile

[Barry Smith]

  Edit $PETSC_ARCH/conf/petscvariables and remove the options you don't want from everywhere in that file.

   Barry


On Nov 19, 2010, at 8:15 AM, TAY wee-beng wrote:

> Hi,
> 
> I have a modified makefile originally given to me by the PETSc team. It worked well but now I want to change some of the options of the compiler, like using -O3 or -ipo etc instead of -O.
> 
> I tried to add -O3 in and the compiling command becomes:
> 
> /opt/openmpi-1.4.1/bin/mpif90 -O3 -c -g -r8 -save -w90 -w -w95    -O   -I/home/wtay/Lib/petsc-3.1-p5/include  ....
> 
> So now there's -O3 and -O. How can I change it to only -O3 or -ipo?
> 
> I have attached the makefile too.
> 
> Thank you very much
> 
> Yours sincerely,
> 
> TAY wee-beng
> 
> 
> <makefile.txt>