[petsc-users] error of compiling complex

[Satish Balay]

We usually do the other way around [build petsc with the correct
compilers and option] and make apps use the same flags [via petsc
formatted makefiles].

However you should be able to construct petsc configure command and
force petsc to build exactly as you need.

Satish

On Thu, 21 May 2020, Sam Guo wrote:

> The reason we don’t use petsc build tool is to make sure we use same
> compiler and flags to build our code and petsc.
> 
> On Thursday, May 21, 2020, Satish Balay <balay at mcs.anl.gov> wrote:
> 
> > Is there a reason you can't use petsc build tools?
> >
> > config/gmakegen.py processes the mkaefiles in source dirs - and determines
> > the list of files to build [for a given configure setup]
> >
> > src/ksp/pc/impls/tfs/makefile has:
> >
> > #requiresscalar real
> >
> > i.e the sources in this dir are compiled only when --with-scalar-type=real
> > and not when --with-scalar-type=complex etc..
> >
> > Satish
> >
> > On Thu, 21 May 2020, Sam Guo wrote:
> >
> > > Thanks for the quick response. I have my own makefile based on PETSc
> > > makefile. I need to update my makefile. It seems PETSc generates the
> > > makefile on fly. I struggle to figure out which files I should skip for
> > > complex. Could you tell me what files I should skip?
> > >
> > > Thanks,
> > > Sam
> > >
> > > On Thu, May 21, 2020 at 12:31 PM Matthew Knepley <knepley at gmail.com>
> > wrote:
> > >
> > > > On Thu, May 21, 2020 at 3:25 PM Sam Guo <sam.guo at cd-adapco.com> wrote:
> > > >
> > > >> Dear PETSc dev team,
> > > >>    I got following error of compiling complex:
> > > >> ../../../petsc/src/ksp/pc/impls/tfs/ivec.c: In function
> > ‘PCTFS_rvec_max’:
> > > >> ../../../petsc/include/petscmath.h:532:30: error: invalid operands to
> > > >> binary < (have ‘PetscScalar’ {aka ‘_Complex double’} and
> > ‘PetscScalar’ {aka
> > > >> ‘_Complex double’})
> > > >>   532 | #define PetscMax(a,b)   (((a)<(b)) ?  (b) : (a))
> > > >>
> > > >>    Any idea what I did wrong? I am using version 3.11.3.
> > > >>
> > > >
> > > > Can you upgrade to 3.13?
> > > >
> > > >   Thanks,
> > > >
> > > >     Matt
> > > >
> > > >
> > > >> Thanks,
> > > >> Sam
> > > >>
> > > >
> > > >
> > > > --
> > > > What most experimenters take for granted before they begin their
> > > > experiments is infinitely more interesting than any results to which
> > their
> > > > experiments lead.
> > > > -- Norbert Wiener
> > > >
> > > > https://www.cse.buffalo.edu/~knepley/
> > > > <http://www.cse.buffalo.edu/~knepley/>
> > > >
> > >
> >
>