[petsc-dev] [petsc-maint #53815] problem configuring petsc-dev w/ML on CIG buildbots

[Jed Brown]

On Fri, Oct 1, 2010 at 18:33, Barry Smith <bsmith at mcs.anl.gov> wrote:
>>>>> On Sep 30, 2010, at 10:50 PM, Brad Aagaard wrote:
>>>>>
>>>>>> We are having trouble building petsc-dev w/ML on the CIG buildbots. ML
>>>>>> is configured and built but the test for using the ML library fails due to
>>>>>>
>>>>>> #error "SEEK_SET is #defined but must not be for the C++ binding of MPI
>>>>>>
>>>>>> even though we have used -DMPICH_IGNORE_CXX_SEEK to avoid this error.
>>>>>> The logs are available at http://www.geodynamics.org:8009/?project=PETSc
>>>>>> (second column x86_64 linux).
>>>>>>
>>>>>> Any insight you can provide on what might be the cause of this error
>>>>>> would be appreciated.

This is an old version of MPICH (obvious from configure.log, not sure
why it's ignoring MPICH_IGNORE_CXX_SEEK, maybe it's vendor-modified?).

Current versions of MPICH have a workaround that is similar to the
workaround that has been in Open MPI for a few years.  These
*_IGNORE_CXX_SEEK macros are not necessary these days (but I still
think they are a good idea, anyone who uses MPI::SEEK_SET instead of
MPI_SEEK_SET is begging for trouble).

Jed