update qt build shell script

guowenxue

2020-08-21 da03ea75b637b157697040c552bb9612882650fd

 3rdparty/zbar/build.sh

@@ -116,6 +116,14 @@
    cd -
fi

if [ ! -f ${PREFIX_PATH}/lib/libiconv.so ] ; then
    cd ../iconv
    ./build.sh
    cd -
fi



compile_zbar