function testSource(){

  if test "$0" != "`echo $0 | sed s/setup\.bash//`" ; then
  # if $0 contains "setup.bash" we've been run... $0 is shellname if sourced.
  # One exception is zsh has an option to set it temporarily to the script name
    if test -z "$ZSH_NAME" ; then
    # we aren't using zsh
     rb_not_sourced=true
   fi 
  fi

  if test -n "$rb_not_sourced" ; then
     echo "  Error: Make sure you source this script, not execute it. Eg:"
     echo "    $ source setup.bash"
     echo "  or"
     echo "    $ . setup.bash"
     echo "  not"
     echo "    $ ./setup.bash"
     unset rb_not_sourced
     exit 1
  fi

  if test ! -f setup.bash ; then
    echo "You must source the script from within the Realistic Books home directory"
    exit 1
  fi

}

testSource

if [ -z $REALISTIC_BOOKS_HOME ] ; then
  export REALISTIC_BOOKS_HOME=`pwd`

  RBOS=`uname -s | tr '[A-Z]' '[a-z]'`

  # check for running bash under cygwin
  if test "`echo $RBOS | sed 's/cygwin//'`" != "$RBOS" ; then
    RBOS=windows
  fi
  export RBOS


  export RBHOME_INSTALLED=$REALISTIC_BOOKS_HOME/$RBOS

  export PATH=$RBHOME_INSTALLED/bin:$RBHOME_INSTALLED/bin/script:$PATH

  export LD_LIBRARY_PATH=$RBHOME_INSTALLED/lib
  export DYLD_LIBRARY_PATH=$RBHOME_INSTALLED/lib

  if [ "x$1" != "xsilent" ] ; then
    echo "*****"
    echo "* Your environment is now set up to run Realistic Books"
    echo "****"
  fi
else
  if [ "x$1" != "xsilent" ] ; then
    echo "*****"
    echo "* Your environment is already set up to run Realistic Books"
    echo "****"
  fi
fi


if [ -e devel.sh ] ; then
  source devel.sh $*
fi