if [ -z "$SAGE_LOCAL" ]; then
echo >&2 "SAGE_LOCAL undefined ... exiting"
echo >&2 "Maybe run 'sage --sh'?"
exit 1
fi
cd src
$MAKE
if [ $? -ne 0 ]; then
echo >&2 "Error building benzene."
exit 1
fi
echo >&2 "Copying benzene..."
cp benzene $SAGE_LOCAL/bin/benzene
if [ $? -ne 0 ]; then
echo >&2 "Error installing benzene."
exit 1
fi