project-shell

#!/bin/bash

TOP_DIR=$( readlink -n -f $(dirname $BASH_SOURCE) )

if [ "$1" = "--do-not-start-shell" ] ; then
    START_SHELL="no"
    shift 1
elif [ "$BASH_SOURCE" != "$0" ] ; then
    START_SHELL="no"
else
    START_SHELL="yes"
fi;

# detect whether boost/bootstrap.sh has been executed yet and if not, do so
if test -f "${TOP_DIR}/boost/bjam" -a \
        -x "${TOP_DIR}/boost/bjam" ; then
    echo boost/bjam  already built
else
    echo Note:  any options passed in on the command line will be passed to
    echo        boost/bootstrap.sh
    echo building boost/bjam...
    pushd ${TOP_DIR}/boost 2> /dev/null
    ./bootstrap.sh "$@"
    popd 2> /dev/null
fi

#need to make sure that the boost-build path is set
export BOOST_BUILD_PATH=${TOP_DIR}/boost/tools/build/v2/

# put the boost sub-project into the path so that we can get bjam correctly
export PATH=${TOP_DIR}/boost:$PATH

SHELL_ARGS=""

# some coolness for bash:
if [ "$( echo $SHELL|grep bash )" != "" ] ; then
    export PROJECT_SHELL_DIR="${TOP_DIR}"
    SHELL_ARGS="--rcfile ${TOP_DIR}/.bashrc"
fi

if [ "$START_SHELL" = "yes" ] ; then
    echo "Entering login shell with the proper environment changes"
    exec $SHELL ${SHELL_ARGS}
fi;