[Libmesh-users] MPI compile error in debug...

[John P. <pet...@cf...>]

See also, the FAQ on the Install page (at the bottom)

http://libmesh.sourceforge.net/wiki/index.php/Installation


Derek Gaston writes:
 > When using METHOD=dbg I'm getting the following compile errors:
 > 
 > In file included from /home/drgasto/roots/x86_64/include/mpidefs.h:49,
 >                  from /home/drgasto/roots/x86_64/include/mpi.h:230,
 >                  from
 > /home/drgasto/projects/libmesh/libmesh/include/base/libmesh_common.h:42,
 >                  from
 > /home/drgasto/projects/libmesh/libmesh/include/base/libmesh.h:30,
 >                  from src/base/libmesh.C:26:
 > /home/drgasto/roots/x86_64/include/mpio.h:42: error: ISO C++ does not
 > support `long long'
 > 
 > 
 > I have, of course, hand compiled that mpich installation.  Here is
 > what is at that line in mpio.h:
 > 
 > #ifndef HAVE_MPI_OFFSET
 > typedef long long MPI_Offset;
 > 
 > Is this just a case of having really strict options when compiling in
 > debug mode versus opt?  Why is long long not valid?  Any suggested
 > fixes?
 > 
 > Derek