龙芯3a5000处理器下编译Qt源码

1、下载Qt源码，archive/qt/5.12/5.12.8/single/qt-everywhere-src-5.12.8.tar.xz

2、安装依赖库：

sudo apt-get install flex
sudo apt-get install bison
sudo apt-get install gperf
sudo apt-get install build-essential
sudo apt-get install libgl1-mesa-dev
sudo apt-get install libglu1-mesa-dev
sudo apt-get install libegl1-mesa-dev
sudo apt-get install freeglut3-dev

3、解压后，qt-everywhere-src-5.12.8目录下mkdir目录build，cd到build目录，执行confiure命令：

./../configure -release -prefix ../Qt5.12.8

4、执行命令：

sudo make

报错：error: #error Target architecture was not detected as supported by Double-Conversion.

报错的文件为qtbase/src/3rdparty/double-conversion/include/double-conversion/utils.h

解决方法：打开utils.h文件，添加defined(__loongarch__) || 

 参考：https://blog.csdn.net/yeflx/article/details/124711915

 

报错：cast from ‘QTJSC::JSCell*’ to ‘int32_t’ {aka ‘int’} loses precision [-fpermissive] u.asBits.payload = reinterpret_cast<int32_t>(ptr);

解决方法：把int32_t改为int64_t

参考：https://blog.csdn.net/a137748099/article/details/120227462

 

5、执行命令：

sudo make install