make install PREFIX="$INSTALL_ROOT/usr" \
     MANPREFIX="$INSTALL_ROOT/usr/share" \
     LNG="$JA2_LANG" \
     SGPDATADIR="$JA2_DATA" &&
mv $INSTALL_ROOT/usr/bin/ja2 $INSTALL_ROOT/usr/games &&
rmdir --ignore-fail-on-non-empty $INSTALL_ROOT/usr/bin
