$Id: README,v 1.1 2007/11/16 13:32:56 kmura Exp $
==========================================================================
Geant4 MPI Interface

  Author:
  Koichi Murakami (KEK) / Koichi.Murakami@kek.jp
==========================================================================

How to build
============

1. Check "G4MPI.gmk" for yor MPI configuration:

* Set "G4MPIROOT", which is the root path to your MPI library.
* Redifine CXX as (wrapped) MPI C++ compiler.
* Specify additional include paths and compiler flags to "CPPFLAGS".

Sample makefiles for (LAM, MPICH2, OpenMPI) are also presented.
An example of "G4MPI.gmk":

  # ===========================================================
  #  Makefile for building G4MPI (LAM)
  # ===========================================================

  ifndef G4MPIROOT
    G4MPIROOT = /opt/lam
  endif

  # additional flags
  CXX := mpic++
  CPPFLAGS += -I$(G4MPIROOT)/include


2. Build the library

# make
# make includes

The library (libG4UImpi) will be created in $G4LIB, 
and header files will be installed into $G4INCLUDE.