Starting with mpi-default-dev 0.3, the package provides the file /usr/share/mpi-default-dev/debian_defaults that defines the variable ARCH_DEFAULT_MPI_IMPL which contains the source package name of the default MPI implementation defined for that architecture. Developers can use it in their debian/rules files to implement special behavior depending on the MPI implementation. It can be used like this include /usr/share/mpi-default-dev/debian_defaults ifneq (,$(findstring $(ARCH_DEFAULT_MPI_IMPL),openmpi)) ... endif to special-case Open MPI. If there is more information for mpi-defaults to provide to developers, please report a wishlist bug to mpi-defaults. -- Manuel Prinz Sat, 14 Mar 2009 14:50:39 +0100