On 3/20/12 10:06 AM, "Gunter, David O" <d...@lanl.gov> wrote:
>I need to build ompi-1.4.3 (or the newer 1.4.5) with an older Intel 10.0 >compiler, but on a newer system in which the default g++ headers are >incompatible with Intel. Thus the C and Fortran compilers function >normally but the Intel C++ compiler fails to build even a simple "hello >world" code. > >Is there a way to build OMPI without a C++ compiler? I tried using the >--disable-mpi-cxx and --disable-mpi-cxx-seek flags but these are just for >the resulting bindings. The configure step still continues to search for >a working C++ compiler. > >Yes, I know I can upgrade the Intel compiler but we don't have that as an >option in this case. Unfortunately, you're a bit out of luck. Open MPI 1.4.x requires C++ even if you're not building the C++ bindings. This is not true of 1.5.x and later. If you don't need the C++ bindings, I would build Open MPI with GNU C and C++ and Intel Fortran. After building, edit <PREFIX>/share/openmpi/mpicc-wrapper-data.txt to change the compiler=gcc line to compiler=<intel C compiler>. There's not going to be much performance difference between the two compilers for Open MPI itself. GNU C and Intel C are link compatible, so that should work out for you and the users will never be the wiser. Brian -- Brian W. Barrett Dept. 1423: Scalable System Software Sandia National Laboratories
