参考链接 linux交叉编译Qt_linux qt 交叉编译-CSDN博客
关键点：编译脚本，放在qt源代码根目录的.sh文件
bash
#!/bin/sh
cd ./qt-everywhere-src-5.12.9
./configure -prefix /home/qsqya/compile/qt5.12.9/build \
-opensource \
-release \
-confirm-license \
-xplatform linux-arm-gnueabi-g++ \
-shared \
-nomake examples \
-nomake tests \
-no-opengl