[petsc-users] compiler related error (configuring Petsc)

[Matthew Knepley]

On Wed, Aug 2, 2023 at 9:32 AM maitri ksh <maitri.ksh at gmail.com> wrote:

> I could compile petsc using the newer version of gnu compiler.
> However, there is some unusual error when I tried to test petsc using a
> print 'hello' file. I could not interpret what the error ('*error.txt*')
> is, but it says something related to MATLAB (which is not used in the '
> *hello.c*' script). Any comments/suggestions?
>

1) Did you link PETSc against MATLAB? If not, did you link your test
against MATLAB?

2) If you linked PETSc against it, likely you were in a shell with
LD_LIBRARY_PATH defined so that MATLAB would run. Without that, it cannot
find the dynamic libraries it needs.

  Thanks,

     Matt


> On Wed, Aug 2, 2023 at 11:07 AM maitri ksh <maitri.ksh at gmail.com> wrote:
>
>> Okay, thank you.
>>
>> On Tue, Aug 1, 2023 at 9:43 PM Satish Balay <balay at mcs.anl.gov> wrote:
>>
>>> > gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-44)
>>>
>>> Is it possible for you to use a newer version GNU compilers?
>>>
>>> If not - your alternative is to build PETSc with --with-cxx=0 option
>>>
>>> But then - you can't use --download-superlu_dist or any pkgs that need
>>> c++ [you could try building them separately though]
>>>
>>> Satish
>>>
>>>
>>> On Tue, 1 Aug 2023, maitri ksh wrote:
>>>
>>> > I am trying to compile petsc on a cluster ( x86_64-redhat-linux, '
>>> > *configure.log'*  is attached herewith) . Initially I got an error
>>> related
>>> > to 'C++11' flag, to troubleshoot this issue, I used 'CPPFLAGS' and
>>> > 'CXXFLAGS' and could surpass the non-compliant error related to c++
>>> compiler
>>> >  but now it gives me another error 'cannot find a C preprocessor'. How
>>> to
>>> > fix this?
>>> >
>>>
>>>

-- 
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/>
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