[petsc-users] /usr/bin/ld: cannot find -lhwloc

[Satish Balay]

Such problems usually occur when 'compiler enviornment' is different
during petsc build - and this application build.

So things are worked during petsc configure [and build] - but they are
are not working during application build.

So the issue is to figure out why the env is different in these
2 builds.

And in the petsc build - I see:

>>>
Using C/C++ linker: cc
Using C/C++ flags: -g -O3
Using Fortran linker: ftn
Using Fortran flags: -g -O3
<<<<

On the application build - I see:

ftn -O2 -no-ipo -traceback 

Don't know if these different options are causing these issues. Its
good to test with default petsc makefiles [which use the same
targets as petsc sources] - if possible.

Satish

On Wed, 26 Feb 2020, Mark Adams wrote:

> Thanks,
> we are now getting
> /usr/bin/ld: cannot find -lgcc_s.
> Any ideas?
> Let me know if you want to logs. (it takes a bit of mucking around).
> Thanks again,
> 
> 
> On Tue, Feb 25, 2020 at 10:37 PM Satish Balay <balay at mcs.anl.gov> wrote:
> 
> > Try
> >
> > --with-hwloc=0
> >
> > Satish
> >
> > On Tue, 25 Feb 2020, Mark Adams wrote:
> >
> > > We are running on a KNL and getting /usr/bin/ld: cannot find -lhwloc
> > >
> > > This is v3.7.7.
> > >
> > > I see -lhwloc in the PETSc stuff. We are also missing libX11.a and I am
> > > configuring now with
> > > --with-x=0 to try to fix that.
> > >
> > > I've attached to full output and the logs.
> > >
> > > Any ideas?
> > > Thanks,
> > > Mark
> > >
> >
> >
>