Let's suppose you have installed all tools in ~/labo. You could use this kind of script to setup your environment:

The most important part is dsx_env.sh which sets correct PYTHONPATH variable

export LABO=$HOME/labo

export CCTOOLS=$LABO/cctools
export SOCLIB=$LABO/soclib
export SYSTEMC=$LABO/systemc
export SYSTEMCASS=$LABO/systemcass

export PATH=$PATH:$SOCLIB/tools/bin:$CCTOOLS/bin

export DSX_DIR=$LABO/dsx

. $DSX_DIR/bin/dsx_env.sh