update 3rdparty cross compile build.sh

guowenxue

2021-08-17 0eee3143424041bbbc1fa6459cdb72dc35b5068c

 3rdparty/local/build.sh

@@ -31,6 +31,8 @@
            rm -rf ${dir}/${dir}*
        fi
    done

    rm -rf install
}

if [[ $# == 1 ]] && [[ $1 == "clean" ]] ; then