which_svn=`which svn` #svn necessary
which_gcc=`which gcc` #gcc gcc necessary
which_gpp=`which g++` #gcc g++ necessary
which_make=`which make` #make necessary
which_java=`which java` #java optional
which_svn=`which svn` #svn necessary
which_gcc=`which gcc` #gcc gcc necessary
which_gpp=`which g++` #gcc g++ necessary
which_make=`which make` #make necessary
which_java=`which java` #java optional