rpmbuild --rebuild  --target x86_64 --define 'disable_auto_requires 1' --define '_name openmpi_gcc' --define 'mpi_selector /usr/bin/mpi-selector' --define 'use_mpi_selector 1' --define 'install_shell_scripts 1' --define 'shell_scripts_basename mpivars' --define '_usr /usr/local' --define 'ofed 0' --define '_prefix /usr/local/mpi/gcc/openmpi-1.6.4' --define '_defaultdocdir /usr/local/mpi/gcc/openmpi-1.6.4' --define '_mandir %{_prefix}/share/man' --define '_datadir %{_prefix}/share' --define 'mflags -j 4' --define 'configure_options   --with-openib=/usr --with-openib-libdir=/usr/lib64  CC=gcc CXX=g++ F77=gfortran FC=gfortran --enable-mpirun-prefix-by-default --with-contrib-vt-flags=--disable-iotrace' --define 'use_default_rpm_opt_flags 1' openmpi-1.6.4-1.src.rpm