[petsc-users] custom compiler flags on Windows

[Dominik Szczerba]

Many thanks for your explanations!

On Thu, Feb 17, 2011 at 7:00 PM, Satish Balay <balay at mcs.anl.gov> wrote:
> On Thu, 17 Feb 2011, Matthew Knepley wrote:
>
>> On Thu, Feb 17, 2011 at 10:37 AM, Dominik Szczerba <dominik at itis.ethz.ch>wrote:
>>
>> > I need to use some special compile flags when compiling with 'cl' on
>> > Windows.
>> > While configuring I currently use --with-cxx='win32fe cl', which works
>> > fine, but if I add some flags after cl the configure brakes,
>> > complaining that the compiler does not work.
>> > I also tried using --with-cxx='cl /MY /OPTIONS' but the result is the
>> > same as before.
>> > Is there a way to specify my own flags with Petsc (or add to them)?
>> >
>>
>> --COPTFLAGS="<flags>" --FOPTFLAGS="" --CXXOPTFLAGS=""
>
> Generally CFLAGS should work. However with MS compilers - we have some
> defaults without which the compilers might not work. [esp with mpi].
> So when changing CFLAGS one might have to include the defaults plus
> the additional flags.
>
> However COPTFLAGS migh be easier to add to CFLAGS - and provided to
> primarily specify optimization flags - but can be used for for other
> flags aswell..
>
> Satish
>
>