[ -n "$CHROOT_TARGET" ] && echo " chroot target: $CHROOT_TARGET"
[ -n "$BUILD_TARGET" ] && echo " build target: $BUILD_TARGET"
[ -n "$ISO_TARGET" ] && echo " ISO target: $ISO_TARGET"
[ -n "$CHROOT_TARGET" ] && echo " chroot target: $CHROOT_TARGET"
[ -n "$BUILD_TARGET" ] && echo " build target: $BUILD_TARGET"
[ -n "$ISO_TARGET" ] && echo " ISO target: $ISO_TARGET"