...
#include /usr/share/mpi-default-dev/debian_defaults
##ARCH_DEFAULT_MPI_IMPL=lam
#MPI_INC=/usr/lib/$(ARCH_DEFAULT_MPI_IMPL)/include
#
#ifeq ($(ARCH_DEFAULT_MPI_IMPL),lam)
#  CC:=mpicc.lam
#else
#  CC:=mpicc
#endif
...
	LDFLAGS="$(LDFLAGS) -Wl,--as-needed" dh_auto_configure -- --enable-pythonmodule --enable-silex --with-qt=/usr --enable-pythonmodule --enable-silex --with-qt-bin=/usr/bin --with-qt-lib=/usr/lib  --with-qt-include=/usr/include/qt4 --with-hdf5=/usr/include,/usr/lib CPPFLAGS=" -I$(MPI_INC) $(CPPFLAGS)"  CC=$(CC)  CFLAGS="$(CFLAGS)"
...
			 --with-hdf5=/usr/include,/usr/lib PYTHON=$$p CPPFLAGS=" -I$(MPI_INC) $(CPPFLAGS)" CC=$(CC)  CFLAGS="$(CFLAGS)" ; \