[petsc-dev] PETSc always recompiles mpi4py petsc4py even when it does not have too

[Satish Balay]

Which is the correct thing to do. i.e:

if libpetsc.so is rebuilt - its dependencies should get rebuilt.

However - in cases where it doesn't get rebuilt (as make found no new
sources to compile) - its probably best to add infrastructure to skip
the rebuild of dependent packages.

Satish

On Sun, 11 Oct 2020, Pierre Jolivet wrote:

> This actually applies to all packages with builtafterpetsc = 1.
> I think you want to do make libs instead of make all?
> 
> Thanks,
> Pierre
> 
> > On 11 Oct 2020, at 9:36 AM, Barry Smith <bsmith at petsc.dev> wrote:
> > 
> > 
> >   I change a single PETSc file and do make all that single file gets compiled but all of mpi4py and petsc4py get recompiled even though I have not changed any thing to affect them. No include files for example
> > 
> > 
> > *** Building mpi4py ***
> > *** Installing mpi4py ***
> > =====================================
> > To use mpi4py, add /Users/barrysmith/Src/petsc/arch-cleanup-dmd-domaindecomposition/lib to PYTHONPATH
> > =====================================
> > *** Building petsc4py ***
> > 
> 
>