[Beowulf] Urgent help with compiling

[Cheng, Kevin]

I am getting a whole load of linkage errors when I compile:

/usr/lib/mpich/lib/libmpich++.a(comm.o)(.gnu.linkonce.t.__tfQ23MPI9Comm_Null+0x1d): In function `MPI::Comm_Null type_info function':
: undefined reference to `__rtti_user'

I am using the mpiCC (mpicxx) compiler to compile .cpp code. I am using normal C MPI function calls though.

My program compiled and ran fine on another machine. But not anymore on this new cluster I moved to.
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